Merge Serum proteinelectrophoresis discuss Talk Proteinelectrophoresis Merger proposal date October 2008 Image Electrophoresis.png thumb Schematic representation of a proteinelectrophoresis gel. Image Monoclonal gammopathy Multiple Myeloma.png thumb Serum proteinelectrophoresis showing a paraprotein peak in the gamma zone in a patient with multiple myeloma . In medicine , proteinelectrophoresis a.k.a. Immunoelectrophoresis is a method of analysing a mixture of protein s by means of gel electrophoresis , mainly in blood blood plasma serum blood plasma is not suitable . Before the widespread use of electrophoresis gels, proteinelectrophoresis was performed on paper sometimes in combination with paper chromatography . Interpretation There are two classes of blood protein s serum albumin and globulin . They are generally equal in proportion, but albumin is much smaller and lightly negatively charged, leading to an accumulation of albumin on the electrophoretic gel. A small band before albumin represents transthyretin also named prealbumin . Some forms of medication or body chemicals can cause their own band, usually small. Abnormal bands spikes are seen in monoclonal gammopathy of undetermined significance and multiple myeloma , and are useful in the diagnosis of these conditions. The globulin s are classified by their banding pattern with their main representatives The alpha globulin alpha band consists of two parts, 1 and 2 sub 1 sub alpha 1 antitrypsin sub 1 sub antitrypsin ... also Affinity electrophoresis Electroblotting Electrofocusing Gel electrophoresis Immunofixation QPNC PAGE Paraprotein Protein methods External links http www3.interscience.wiley.com cgi bin abstract 113343976 ABSTRACT Discontinuous native protein gel electrophoresis http wolfson.huji.ac.il purification Protein purification facility DEFAULTSORT ProteinElectrophoresis Category Electrophoresis Category Molecular biology Category Protein methods Category Laboratory techniques Category Hematology ... more details
Unreferenced date December 2009 Merge Proteinelectrophoresis discuss Talk Serum proteinelectrophoresis Merger proposal date October 2008 Image Electrophoresis.png thumb Schematic representation of a proteinelectrophoresis gel Image Serum proteinelectrophoresis normal.PNG thumb Normal serum proteinelectrophoresis diagram with legend of different zones. Serum proteinelectrophoresis SPEP is a laboratory test that examines specific proteins in the blood called globulins . Blood must first be collected, usually into an airtight vial or syringe . Electrophoresis is a laboratory technique where the blood serum the fluid portion of the blood after the blood has clotted is placed on special paper treated with agarose gel and exposed to an electric current to separate the serum protein components into five classifications by size and electrical charge, those being serum albumin , alpha 1 globulin ... Serum ProteinElectrophoresis Category Serology Category Electrophoresis de Serumelektrophorese ... is necessary before the decrease shows on electrophoresis. Usually a single band is seen. Heterozygous ... group and thiol compounds may be bound to the protein altering their mobility. A decreased band is seen ... from unregulated lung elastase breakdown by neutrophils in the lung tissue. Bence Jones protein may ... alpha 1 antichymotrypsin and vitamin D binding protein. These bands fuse and intensify in early inflammation due to an increase in alpha 1 antichymotrypsin, an acute phase protein . Alpha 2 Zone ... protein loss the characteristic increased alpha 2 of the nephrotic syndrome , due to its ... Transferrin and beta lipoprotein comprises the beta 1. Increased beta 1 protein due to the increased ... therapy. Beta 2 comprises C3 Complement protein 3 . It is raised in the acute phase response. Also ... detected by electrophoresis are severe infection , chronic liver disease, systemic lupus ... . C reactive protein can be seen as a faint band when the level is grossly abnormal, e.g. in Biological ... more details
For specific types of electrophoresis for example, the process of administering medicine, iontophoresis Electrophoresis is the motion of dispersed particles relative to a fluid under the influence of a spatially uniform electric field . ref Lyklema, J. Fundamentals of Interface and Colloid Science , vol.2, page.3.208, 1995 ref ref Hunter, R.J. Foundations of Colloid Science , Oxford University Press, 1989 ref ref Dukhin, S.S. & Derjaguin, B.V. Electrokinetic Phenomena , J.Willey and Sons, 1974 ref ... and the surrounding fluid. Image electrophoresis.gif thumb 200px Illustration of electrophoresis Image retardation.gif thumb 200px Illustration of electrophoresis retardation Theory The dispersed ... retardation force. File Electrophoresis equipment.jpg thumb left This photograph shows a technician using an electrophoresis apparatus to separate proteins by molecular weight. Considering the hydrodynamic ... sub e sub defined as math mu e v over E . math The most known and widely used theory of electrophoresis ... be important for electrophoresis, as follows immediately from the Figure on the right. Increasing thickness ... simplifications not only for electrophoresis theory but for many other electrokinetic theories ... Trans. 2, 74, 1607, 1978 ref Recent molecular dynamics required for electrophoresis to occur ... electrophoresis Capillary electrophoresis DNA electrophoresis Electroblotting Electrofocusing Gel electrophoresis Isotachophoresis Proteinelectrophoresis Pulsed field gel electrophoresis References Commons Electrophoresis Reflist Further reading Voet and Voet 1990 Biochemistry . John Whiley & sons ... species as determined by macrorestriction digests resolved by pulsed field gel electrophoresis. Int ... flow and transport in a micro electrophoresis device. Lab Chip 5 , 949 958. Shim, J., Dutta, P., and Ivory, C.F. 2007 Modeling and simulation of IEF in 2 D microgeometries. Electrophoresis ... mobilities Category Electromagnetism Category Electrophoresis Category Colloidal chemistry ar ... more details
Affinity electrophoresis is a general name for many analytical methods used in biochemistry and biotechnology . Both qualitative and quantitative information may be obtained through affinity electrophoresis. The methods include the so called mobility shift electrophoresis, charge shift electrophoresis and affinity capillary electrophoresis . The methods are based on changes in the electrophoresis electrophoretic pattern of molecules mainly macromolecules through biospecific interaction or complex formation . The interaction or binding of a molecule, charged or uncharged, will normally change the electrophoretic properties of a molecule. Membrane proteins may be identified by a shift in mobility induced by a charged detergent . Nucleic acid s or nucleic acid fragments may be characterized by their affinity to other molecules. The methods has been used for estimation of binding constant s, as for instance in lectin affinity electrophoresis or characterization of molecules with specific features like glycan content or ligand binding. For enzymes and other ligand binding proteins, onedimentional electrophoresis similar to counter electrophoresis or to immunoelectrophoresis rocket immunoelectrophoresis , affinity electrophoresis may be used as an alternative quantification of the protein. Some of the methods are similar to affinity chromatography by use of immobilized ligands . See also Immunoelectrophoresis biochemistry stub Category Electrophoresis Category Molecular biology Category Protein methods Category Laboratory techniques Category Proteinprotein interaction assays ... more details
include DNA electrophoresis , a specific type of gel electrophoresis used to analyse DNA . Proteinelectrophoresis , a specific type of gel electrophoresis used to analyse proteins . Two dimensional gel electrophoresis , a specific type of gel electrophoresis commonly used to analyse proteins ...Electrophoresis is both a phenomenon and a technique used in many scientific disciplines. Interface and Colloid Science Electrophoresis is the most known effect from electrokinetic phenomena . It is a motion of dispersed particles relative to a fluid under influence of electric that is space uniform . Alternatively, similar motion in space non uniform electric field is called dielectrophoresis . In this scientific discipline electrophoresis is mostly used for studying properies of dispersed particles . In particular, for measuring zeta potential . There are several different variations of electrophoresis based techniquies. The most known are microelectrophoresis and electrophoretic light scattering . These methods are described in details in the Fundamentals of Interface and Colloid Science , by Lyklema ref Lyklema, J. Fundamentals of Interface and Colloid Science , Academic Press, vol 2, 1995 ref The same reference overviews in details theory of electrophoresis . Physics Electrophoresis , the method of moving charged particles through a medium by using an electric field induced by flat ... charges. Molecular Biology and Biochemistry Affinity electrophoresis , used to separate and characterize .... Capillary electrophoresis , commonly used to separate biomolecules by their charge and frictional forces. Gel electrophoresis , a technique used by scientists to separate molecules based on physical ... polyacrylamide gel electrophoresis, commonly used to analyse proteins. Immunoelectrophoresis , used ... field. Other Electrophoresis is also used as a name or title Electrophoresis journal Electrophoresis journal . References references disambig Category Colloidal chemistry Category Electrophoresis ... more details
, or protein however, gel electrophoresis can be used for separation of nanoparticles. Electrophoresis ... Native Gel Electrophoresis QPNC PAGE Northern blot ting Proteinelectrophoresis SDS PAGE Two dimensional ... cgi bin abstract 113343976 ABSTRACT Discontinuous native protein gel electrophoresis http maradydd.livejournal.com 417631.html Drinking straw electrophoresisProtein methods DEFAULTSORT Gel Electrophoresis Category Protein methods Category Molecular biology Category Laboratory techniques ...Infobox chemical analysis name Gel electrophoresis image Gel electrophoresis apparatus.JPG caption Gel electrophoresis apparatus An agarose gel is placed in this buffer filled box and electrical field ... DNA migrates toward the camera. acronym classification Electrophoresis analytes manufacturers related Capillary electrophoresis br SDS PAGE br Two dimensional gel electrophoresis br Temperature gradient gel electrophoresis hyphenated Gel electrophoresis refers to using a gel as an anticonvective medium and or seiving medium during electrophoresis. Gel electrophresis is most commonly used for separation ... electrophoresis stain can be applied. ref name Stryer cite book author Berg JM, Tymoczko JL Stryer ... bv.fcgi?&rid stryer.section.438 455 isbn 0 7167 4955 6 ref DNA Gel electrophoresis is usually performed ... ting for further characterization. Separation In simple terms Electrophoresis is a procedure which ... in the gel material. The gel is placed in an electrophoresis chamber, which is then connected ... to be analyzed. When separating protein s or small nucleic acid s DNA , RNA , or oligonucleotide s the gel ... allowing for the separation of macromolecules and affinity electrophoresis macromolecular complexes . citation needed date January 2011 Electrophoresis refers to the electromotive force EMF that is used ..., John F. & White, Bernard J. ref Visualization File Gel electrophoresis 2.jpg thumb right 250px Gel electrophoresis After the electrophoresis is complete, the molecules in the gel can be staining biology ... more details
Orphan date January 2011 The history of electrophoresis begins in earnest with the work of Arne Tiselius in the 1930s, and new separation process es and chemical analysis techniques based on electrophoresis continue to be developed into the 21st century. Tiselius, with support from the Rockefeller Foundation , developed the Tiselius apparatus for moving boundary electrophoresis , which was described ... zone electrophoresis methods in the 1940s and 1950s, which used filter paper or gel s as supporting media. By the 1960s, increasingly sophisticated gel electrophoresis methods made it possible to separate ... biology rise of molecular biology . Gel electrophoresis and related techniques became the basis for a wide range of biochemical methods , such as protein fingerprinting , Southern blot and similar blotting procedures, DNA sequencing , and many more. Electrophoresis before Tiselius Early work with the basic principle of electrophoresis dates to the early 19th century, based on Faraday s laws ... would form the basis of Tiselius s moving boundary electrophoresis method. ref Vesterberg, p. 5 ... a range of new applications of electrophoresis in analyzing chemical mixtures. Its development, significantly ... at a number of major of major centers of chemical research. Rise of zone electrophoresis By the late 1940s, new electrophoresis methods were beginning to address some of the shortcomings of the moving boundary electrophoresis of the Tiselius apparatus, which was not capable of completely separating ... in 1950 Tiselius dubbed these methods zone electrophoresis . Zone electrophesis found widespread ..., making it possible with relatively simple technology to analyze complex protein mixtures and identify minute differences in related proteins. Widespread application Since the 1950s, electrophoresis .... See also Electrophoresis journal Electrophoresis Journal of Electrophoresis History of chromatography ... 19. DEFAULTSORT History Of Electrophoresis Category History of biology Category Electrophoresis ... more details
Infobox Journal title Electrophoresis cover Image Electrophoresis Journal.jpg thumb center Cover editor Ziad El Rassi ref name editboard Wiley InterScience Journals Electrophoresis, http www3.interscience.wiley.com journal 10008330 home 2027 edbd.html Editorial Board . ref discipline Biochemistry language English language English abbreviation None publisher Wiley VCH Verlag GmbH & Co. KGaA country Germany frequency Biweekly history 1980 to present ref name firstissue Wiley InterScience Journals Electrophoresis, http www3.interscience.wiley.com journal 110461308 issue Volume 1 1 April 1980 . ref openaccess license impact 3.077 ref name JCR2010 http scientific.thomsonreuters.com products jcr Journal Citation Reports , 2010. ref impact year 2009 website http www3.interscience.wiley.com journal 10008330 home RSS http www3.interscience.wiley.com rss journal 10008330 atom JSTOR OCLC 7297725 LCCN 83640492 CODEN ELCTDN ISSN 0173 0835 eISSN 1522 2683 Electrophoresis is a scientific journal for new analytical and preparative methods and for innovative applications on all aspects of electrophoresis . It was first published in April 1980 ref name firstissue . The Institute for Scientific Information ISI impact factor for 2009 was 3.077. ref name JCR2010 References references Category Electrophoresis Category Biochemistry journals Category English language journals Category Publications established in 1980 chem journal stub fr Electrophoresis ... more details
Image DNA Agarose Gel Electrophor.jpg 200px thumb right Digital printout of an agarose gel electrophoresis of cat insert plasmid DNA Image Electropherogram trace.jpg thumb 200px DNA electropherogram trace DNA electrophoresis is an analytical technique used to separate DNA fragments by size. DNA molecules which are to be analyzed are set upon a viscous medium, the gel , where an electric field induces the DNA to migrate toward the anode , due to the net negative charge of the sugar phosphate backbone of the DNA chain. The separation of these fragments is accomplished by exploiting the mobilities with which different sized molecules are able to pass through the gel. Longer molecules migrate more slowly because they experience more resistance within the gel. Because the size of the molecule affects its mobility, smaller fragments end up nearer to the anode than longer ones in a given period. After some time, the voltage is removed and the fragmentation gradient is analyzed. For larger separations between similar sized fragments, either the voltage or run time can be increased. Extended runs across a low voltage gel yield the most accurate resolution. The DNA to be separated can be prepared in several ways before separation by electrophoresis. In the case of large DNA molecules, the DNA ... linear DNA fragments of known length. The types of gel most commonly used for DNA electrophoresis are agarose gel electrophoresis agarose for relatively long DNA molecules and polyacrylamide gel electrophoresis ... electrophoresis has become important for applications such as high throughput DNA sequencing. Electrophoresis techniques used in the assessment of DNA damage include alkaline gel electrophoresis and pulsed field gel electrophoresis . The measurement and analysis are mostly done with a specialized gel analysis software. Capillary electrophoresis results are typically displayed in a trace view called an electropherogram . Category Molecular biology Category Electrophoresis Category DNA ru ... more details
Unreferenced stub auto yes date December 2009 Orphan date December 2009 Hemoglobin electrophoresis is a blood test that can detect different types of hemoglobin . It uses the principles of gel electrophoresis to separate out the various types of hemoglobin. The test can detect abnormal levels of HbS, the form associated with sickle cell disease , as well as other abnormal hemoglobin related blood disorders, such as hemoglobin C . It can also be used to determine whether there is a deficiency of any normal form of hemoglobin, as in the group of diseases known as thalassemia s. Different hemoglobins have different charges, and according to those charges and the amount, hemoglobins move at different speeds in the gel whether in alkaline gel or acid gel.The hemoglobin electrophoresis is also known to be thalessemia screening, this also can be helpful for the patient who is frequently need of fresh blood transfusion. The patient need blood transfusion because the body is unable to produce enough Hemoglobin required for the body. See Hemoglobinopathy Migration patterns Migration Patterns . Thalassemia major Hb F level and Hb A2 levels increase DEFAULTSORT Hemoglobin Electrophoresis Category Blood tests Treatment stub ... more details
Infobox chemical analysis name Capillary electrophoresis image caption acronym CE classification Electrophoresis ... electrophoresis br Two dimensional gel electrophoresis hyphenated Capillary electrophoresis mass spectrometry Capillary electrophoresis CE , also known as capillary zone electrophoresis CZE , can be used ... electrophoresis , electrically charged analytes move in a conductive liquid medium under the influence of an electric field . Introduced in the 1960s, the technique of capillary electrophoresis ... electrophoresis is relatively simple. A basic schematic of a capillary electrophoresis system is shown ... 2007 . ref Image Capillaryelectrophoresis.gif frame Figure 1 Diagram of capillary electrophoresis system Detection Separation by capillary electrophoresis can be detected by several detection devices ... used in capillary electrophoresis are coated with a polymer for increased stability. The portion ... the stability of the cell window. The path length of the detection cell in capillary electrophoresis ... tubing . ref name Baker small Fluorescence detection can also be used in capillary electrophoresis ... electrophoresis system can be complicated. The method requires that the light beam be focused on the capillary ... In order to obtain the identity of sample components, capillary electrophoresis can be directly coupled ... done with a specialized http www.labimage.net gel analysis software . For CE SERS, capillary electrophoresis ... electrophoresis. This allows the subsequent spectroscopic technique to be applied to specific eluants ... , 5348 5355. ref Modes of separation The separation of compounds by capillary electrophoresis is dependent ... by capillary electrophoresis. The velocity of migration of an analyte in capillary electrophoresis ... and resolution The number of theoretical plates, or separation efficiency, in capillary electrophoresis ... and is proportional to the strength of the electric field. The efficiency of capillary electrophoresis ... like High performance liquid chromatography HPLC . Unlike HPLC, in capillary electrophoresis there is no mass ... more details
of gel electrophoresis if the desired protein s molecular weight and isoelectric point are known, by spectroscopy ...About a class of molecules protein as a nutrient Protein nutrient other uses pp semi indef pp move indef File Myoglobin.png thumb right 250px A representation of the 3D structure of the protein myoglobin showing colored alpha helix alpha helices . This protein was the first to have its structure solved ... compound compounds consisting of one or more polypeptide s typically folded into a globular protein globular or fibrous protein fibrous form in a biologically functional way. A polypeptide is a single ... acids in a protein is defined by the DNA sequence sequence of a gene , which is encoded in the genetic ... or even during synthesis, the residues in a protein are often chemically modified by post translational ... together to achieve a particular function, and they often associate to form stable protein complex complex ... to be single structure. Other proteins undergo large rearrangements from one protein conformation ... signaling event . Thus, the structure of a protein serves as a medium through which to regulate either the function of a protein or activity of an enzyme. Not all proteins requiring a folding process ... ingested protein into free amino acids that are then used in metabolism. Proteins were first described ... Jakob Berzelius in 1838. Early nutritional scientists such as the German Carl von Voit believed that protein ... urease was in fact a protein. ref name Sumner1926 The first protein to be protein sequencing .... The first protein structure s to be solved were hemoglobin and myoglobin , by Max Perutz and John ... may be protein purification purified from other cellular components using a variety of techniques such as ultracentrifugation , Precipitation chemistry precipitation , electrophoresis , and chromatography .... Methods commonly used to study protein structure and function include immunohistochemistry , site ... protein folding the statistical analysis techniques employed to calculate a protein s probable ... more details
Protein A is a 40 60 Atomic mass unit kDa MSCRAMM surface protein originally found in the cell wall of the bacteria Staphylococcus aureus . It is encoded by the spa gene and its regulation is controlled by DNA topology, cellular osmolarity, and a two component regulatory system two component system called ArlS ArlR. It has found use in biochemical research because of its ability to bind immunoglobulins . It binds proteins from many of mammalian species, most notably IgG s. It binds with the Fc region ... antibody function on their surface which disrupts opsonization and phagocytosis . Protein A antibody .... Protein A binds with moderate affinity to human IgM , IgA and IgE as well as to mouse IgG3 and IgG1 .... Other antibody binding proteins In addition to Protein A, other immunoglobulin binding bacterial proteins such as Protein G , Protein A G and Protein L are all commonly used to purify, immobilize or detect immunoglobulins. Role in pathogenesis As a pathogen Staphylococcus aureus utilizes Protein .... Protein A helps inhibit phagocytic engulfment and acts as an immunological disguise. Mutants of S. aureus lacking protein A are more efficiently phagocytosed in vitro, and mutants in infection models ... 197 1125 1139. ref Research Recombinant Staphylococcal Protein A is often produced in E. coli for use in immunology and other biological research. One recombinant form of Protein A is called MabSelect ... 18114994AE.pdf ref . Protein A is often coupled to other molecules such as a fluorescent dye , enzyme ... widely utilized coupled to magnetic, latex and agarose beads. Protein A is often immobilized onto a solid support and used as reliable method for purifying total IgG from crude protein mixtures ... of antibodies. Immunoprecipitation studies with protein A conjugated to beads are also commonly used to purify proteins or protein complexes indirectly through antibodies against the protein or protein complex of interest. References reflist Category Proteins Category Staphylococcaceae de Protein ... more details
PBB geneid 5627 Protein S is a vitamin K dependent plasma glycoprotein synthesized in the endothelium. In the circulation, Protein S exists in two forms a free form and a complex form bound to complement system complement protein C4b. In humans, protein S is encoded by the PROS1 gene . ref name pmid2944113 ... J, Wydro R title Isolation and sequence of the cDNA for human protein S, a regulator of blood coagulation ... in Seattle, Wash, first discovered protein S and arbitrarily named it after the city of its ... title A comparison of human prothrombin, factor IX Christmas factor , factor X Stuart factor , and protein ... of protein S, a gamma carboxyglutamic acid containing protein from bovine and human plasma ... bi00572a026 ref Function The best characterized function of Protein S is its role in the anti coagulation pathway, where it functions as a cofactor to Protein C in the inactivation of factor V Factors ... journal author Castoldi E, Hackeng TM title Regulation of coagulation by protein S journal Curr. Opin ... url ref Protein S can bind to negatively charged phospholipids via the carboxylated Gla domain GLA domain . This property allows Protein S to function in the removal of cells which are undergoing ... membrane. These negatively charged phospholipids are recognized by phagocytes such as macrophages . Protein ... the apoptotic cell and the phagocyte. The bridging property of Protein S enhances the phagocytosis ... occurring. Pathology Mutations in the PROS1 gene can lead to Protein S deficiency ... of, and molecular defects underlying, inherited protein S deficiency in the general population ... Prior P, Hurtado B, Sala N title Molecular basis of protein S deficiency journal Thromb. Haemost ... Protein S has been shown to Proteinprotein interaction interact with Factor V . ref name pmid10593904 ... J, Tans G, Griffin J H year 1999 month Dec. title C terminal residues 621 635 of protein S are essential ... coauthors Mesters R M, Tans G, Rosing J, Griffin J H year 1993 month Feb. title Binding of protein ... more details
Difference gel electrophoresis DIGE is a form of gel electrophoresis where up to three different protein samples can be labeled with fluorescent dye s for example Cy3, Cy5, Cy2 prior to two dimensional electrophoresis. After the gel electrophoresis, the gel is scanned with the excitation wavelength of each dye one after the other. This technique is used to see changes in protein abundance for example, between a sample of a healthy person and a sample of a person with disease . It overcomes limitations in traditional 2D electrophoresis that are due to inter gel variation. This can be considerable even with identical samples. Since the proteins from the different sample types e.g. healthy diseased, virulent non virulent are run on the same gel they can be directly compared. To do this with traditional 2D electrophoresis requires large numbers of time consuming repeats. In experiments comprising several gels, a common technique is to include an internal standard in each gel. The internal standard is prepared by mixing together several or all of the samples in the experiment. This allows the measurement of the abundance of a protein in each sample relative to the internal standard. Since the amounts of each protein in the internal standard is known to be the same in every gel, this method reduces inter gel variation. ref Alban, A., David, S. O., Bjorkesten, L., Andersson, C. et al. A novel experimental design for comparative two dimensional gel analysis Two dimensional difference gel electrophoresis incorporating a pooled internal standard. Proteomics 2003, 3, 36 44. ref Software packages that can handle analysis of DIGE experiments include http www4.gelifesciences.com aptrix upp00919.nsf Content Proteomics DIGE Proteomics DIGE Software DeCyder downloads software DeCyder , http ... and http www.ludesi.com redfin REDFIN . See also Two dimensional gel electrophoresis Protomap proteomics PROTOMAP References Reflist Category Electrophoresis biochem stub ... more details
unreferenced date July 2008 Native Gel Electrophoresis is a technique used mainly in proteinelectrophoresis where the proteins are not denatured and therefore separated based on their charge to mass ratio. The two main types of native gels used in proteinelectrophoresis are polyacrylamide gel polyacrylamide gels and agarose gel electrophoresis agarose gels . Polyacrylamide gel electrophoresis PAGE is used for separating proteins ranging in size from 5 to 2,000 kiloDalton due to the uniform pore size provided by the polyacrylamide gel. Pore size is controlled by controlling the concentrations of acrylamide and bis acrylamide powder used in creating a gel. Care must be used when creating this type of gel, as acrylamide is a potent neurotoxin in its liquid and powdered form. The other type of gel used is agarose gel. Agarose gels can also be used to separate native protein. They do not have a uniform pore size, but are optimal for electrophoresis of proteins that are larger than 200 kDalton. Unlike SDS PAGE type electrophoreses, Native gel electrophoresis does not use a charged Denaturation biochemistry denaturing agent. The molecules being separated usually proteins therefore differ in molecular mass and intrinsic charge and experience different electrophoretic forces dependent on the ratio of the two. Since the proteins remain in the native state they may be visualised not only by general protein staining reagents but also by specific enzyme linked staining. See also Native PAGE QPNC PAGE Please add content and edit further Category Electrophoresis de Nativ Gelelektrophorese ... more details
Moving boundary electrophoresis or free boundary electrophoresis is electrophoresis in a free solution. It was developed by Arne Tiselius in 1937. Tiselius was awarded the 1948 Nobel Prize in chemistry for his work on the separation of colloids through electrophoresis, the motion of charged particles through a stationary liquid under the influence of an electric field. The apparatus includes a U shaped cell filled with buffer solution and electrodes immersed at its ends. The sample applied could be any mixture of charged components like a protein mixture. On applying voltage, the compounds will migrate to the anode or cathode depending on their charges. The change in the refractive index at the boundary of the separated compounds is detected using Schlieren optics at both ends of the solution in the cell. ref Reiner, Westermeier , Electrophoresis in Practice , 3rd Edition. ref References reflist External links http www.webcitation.org query?url http www.geocities.com bioelectrochemistry tiselius.htm&date 2009 10 25 19 13 00 Arne Wilhelm Kaurin Tiselius &mdash Information on Tiselius compiled from various sources. Category Electromagnetism Category Electrophoresis Category Colloidal chemistry ... more details
Orphan date July 2008 Kinetic capillary electrophoresis or KCE is capillary electrophoresis of molecule s that interact during electrophoresis. KCE was introduced and developed by Professor Sergey Krylov and his research group at York University , Toronto, Canada ref cite journal author Petrov A, Okhonin V, Berezovski M, Krylov SN title Kinetic capillary electrophoresis KCE a conceptual platform for kinetic homogeneous affinity methods journal J Am Chem Soc. volume 127 issue 48 pages 17104 10 year 2005 month Dec pmid 16316258 doi 10.1021 ja056232l ref . It serves as a conceptual platform for development of homogeneous chemical affinity methods for studies of molecular interactions measurements of binding and rate constants and affinity purification purification of known molecules and search for unknown molecules . Different KCE methods are designed by varying initial and boundary conditions the way interacting molecules enter and exit the capillary. Several KCE methods were described non equilibrium capillary electrophoresis of the equilibrium mixtures NECEEM , ref cite journal author Berezovski M, Krylov SN title Nonequilibrium capillary electrophoresis of equilibrium mixtures a single experiment reveals equilibrium and kinetic parameters of protein DNA interactions journal J Am Chem Soc. volume 124 issue 46 pages 13674 5 year 2002 month Nov pmid 12431087 doi 10.1021 ja028212e ref sweeping capillary electrophoresis SweepCE , ref cite journal author Okhonin V, Berezovski M, Krylov SN title Sweeping capillary electrophoresis a non stopped flow method for measuring bimolecular rate constant of complex formation between protein and DNA journal J Am Chem Soc. volume 126 issue ... electrophoresis method for direct determination of rate constants of complex formation and dissociation ... of protein ligand interactions, selection of aptamer s, determination of temperature inside ... DEFAULTSORT Kinetic Capillary Electrophoresis Category Electrophoresis Category Chemical kinetics ... more details
Capillary electrophoresis mass spectrometry CEMS is an analytical chemistry technique formed by the combination of the liquid separation process of capillary electrophoresis with mass spectrometry . ref name pmid2774189 cite journal author Loo JA, Udseth HR, Smith RD title Peptide and protein analysis by electrospray ionization mass spectrometry and capillary electrophoresis mass spectrometry journal Anal. Biochem. volume 179 issue 2 pages 404 12 year 1989 month June pmid 2774189 doi 10.1016 0003 2697 89 90153 X url ref Ions are typically formed by electrospray ionization , ref name pmid18790125 cite journal author Maxwell EJ, Chen DD title Twenty years of interface development for capillary electrophoresis electrospray ionization mass spectrometry journal Anal. Chim. Acta volume 627 issue 1 pages 25 33 year 2008 month October pmid 18790125 doi 10.1016 j.aca.2008.06.034 url http linkinghub.elsevier.com retrieve pii S0003 2670 08 01244 0 ref but they can also be formed by matrix assisted laser desorption ionization ref name pmid8831154 cite journal author Zhang H, Caprioli RM title Capillary electrophoresis combined with matrix assisted laser desorption ionization mass spectrometry continuous sample deposition on a matrix precoated membrane target journal J Mass Spectrom volume 31 issue 9 pages 1039 46 year 1996 month September pmid 8831154 doi 10.1002 SICI 1096 9888 199609 31 9 1039 AID JMS398 3.0.CO 2 F url ref or other ionization techniques. It has applications in basic research in proteomics ref name pmid18704377 cite journal author Metzger J, Schanstra JP, Mischak H title Capillary electrophoresis mass spectrometry in urinary proteome analysis current applications and future ... title Quantitation in capillary electrophoresis mass spectrometry journal Electrophoresis journal Electrophoresis ..., Neus ss C, Pelzing M, Mischak H title Capillary electrophoresis mass spectrometry as a powerful tool ... chromatography mass spectrometry LC MS and capillary electrophoresis mass spectrometry CE MS based ... more details
thumb For the isolation of protein spots from 2D gels robots are used in modern laboratorys. Two dimensional gel electrophoresis , abbreviated as 2 DE or 2 D electrophoresis , is a form of gel electrophoresis commonly used to analyze proteins. Mixtures of proteins are separated by two properties in two dimensions on 2D gels. Basis for separation 2 D electrophoresis begins with 1 D electrophoresis ... the first. In 1 D electrophoresis, proteins or other molecules are separated in one dimension, so that all ... are more effectively separated in 2 D electrophoresis than in 1 D electrophoresis. The two dimensions that proteins are separated into using this technique can be isoelectric point , protein complex mass in the native PAGE native state, and protein mass . To separate the proteins by isoelectric ... charge on the protein is 0 a neutral charge . For the analysis of the functioning of proteins in a Cell ... techniques conserving the native state of the protein complex es. In native polyacrylamide gel electrophoresis native PAGE , proteins remain in their native state and are separated in the electric ... a number of SDS molecules roughly proportional to the protein s length. Because a protein s length ... of SDS molecules roughly proportional to the protein s mass. Since the SDS molecules are negatively ... of the isoelectric focusing step therefore the coating of the protein in SDS negatively charged ... to the gel. The silver binds to cysteine groups within the protein. The silver is darkened by exposure ... and therefore the amount of protein at a given location on the gel. This measurement can only give approximate ... by 2D electrophoresis. In supercoiling assays, coiled DNA is separated in the first dimension and denatured .... This is comparable to the combination of native PAGE SDS PAGE in protein separation. In summary ... molecule need not be protein. 2D gel analysis software Image 2D gel images dual channel original.PNG thumb 200px Warping Images of two 2D electrophoresis gels, overlaid with http www.decodon.com ... more details
cleanup date September 2008 Temperature Gradient Gel Electrophoresis TGGE and Denaturing Gradient Gel Electrophoresis DGGE are forms of electrophoresis which use either a temperature or chemical gradient to denature the sample as it moves across an acrylamide gel. TGGE and DGGE can be applied to nucleic acids such as DNA and RNA , and less commonly proteins. TGGE relies on temperature dependent changes in structure to separate nucleic acids . DGGE was the original technique, and TGGE a refinement of it. Image 16S PCR DGGE.jpg thumb right 450px Negative image of an ethidium bromide stained DGGE gel History DGGE was invented by Leonard Lerman , while he was a professor at SUNY Albany. ref Cell. 1979 Jan 16 1 191 200. Length independent separation of DNA restriction fragments in two dimensional gel electrophoresis. Fischer SG, Lerman LS ref ref Fischer S. G. and Lerman L. S. Separation of random .... Sci. USA, 1983, 80, 1579 1583. ref The same equipment can be used for analysis of protein , which ... from Biometra. Temperature gradient gel electrophoresis DNA has a negative charge, and so ... molecule this is the basis for size dependent separation in standard electrophoresis . However ... . Denaturing gradient gel electrophoresis Denaturing gradient gel electrophoresis DGGE works by applying a small sample of DNA or RNA to an electrophoresis gel that contains a Denaturation biochemistry ... an impact on the overall temperature required to separate the DNA Biometra, 2000 . Electrophoresis ... gradient gel electrophoresis Wong et al., 2002 . p53 mutation in pancreatic juices Lohr and coworkers ... electrophoresis analysis of polymerase chain reaction amplified genes coding for 16S rRNA. http www.pubmedcentral.nih.gov ... be separated from each other by agarose gel electrophoresis. However, sequence variations i.e. ... of the Sciences in Philadelphia. DEFAULTSORT Temperature Gradient Gel Electrophoresis Category Biochemistry methods Category Electrophoresis Category Gene tests es Electroforesis en gel con gradiente ... more details
kbp ladder. The position of the wells and direction of DNA migration is noted. Agarose gel electrophoresis ... and RNA fragments by length, to estimate the size of DNA and RNA fragments or to separate protein ... during electrophoresis. Samples are also easily recovered. After the experiment is finished, the resulting ... techniques. Since passing current through a gel causes heating, gels may melt during electrophoresis. Electrophoresis is performed in buffer solutions to reduce pH changes due to the electric field, which ... digest , linear DNA PCR products, or RNAs. Agarose gel electrophoresis is widely used to resolve ... and dyes The most common dye used to make DNA or RNA bands visible for agarose gel electrophoresis ... agarose and resolution limits Agarose gel electrophoresis can be used for the separation of DNA fragments ... agarose gels should be run with a Pulsed field gel electrophoresis pulsed field electrophoresis PFE , or field inversion electrophoresis . Most agarose gels are made with between 0.7 good separation ... dissolved in electrophoresis buffer. Up to 3 can be used for separating very tiny fragments but a vertical .... 1 gels are common for many applications. Buffers There are a number of buffers used for agarose electrophoresis ... electrophoresis. As low as one base pair size difference could be resolved in 3 agarose gel ... and principles of conductive media for standard DNA electrophoresis. Anal Biochem. 333 1 1 13. PMID ... Analysis After electrophoresis the gel is illuminated with an ultraviolet lamp usually by placing it on a light ... acid fluoresces reddish orange, images are usually shown in black and white see figures . Gel electrophoresis ... a similar fragment cut from a 4.5 kb plasmid vector See also Gel electrophoresis Immunodiffusion , Immunoelectrophoresis Northern blot PCR Restriction endonuclease SDS polyacrylamide gel electrophoresis ... a gel and extracting DNA http maradydd.livejournal.com 417631.html Drinking straw electrophoresis ... method from wikiversity DEFAULTSORT Agarose Gel Electrophoresis Category Biological techniques ... more details
Fluorophore assisted carbohydrate electrophoresis or FACE is a biochemical technology suited for detecting complex mixtures of high molecular weight N glycans. ref name Harish cite journal last Harish first P. M. Kumar date July 23, 1999 title Use of Fluorophore Assisted Carbohydrate Electrophoresis FACE in the Elucidation of N Linked Oligosaccharide Structures journal Methods in Biotechnology volume 10 pages 221 234 url http www.springerprotocols.com Abstract doi 10.1007 978 1 59259 261 6 18 doi 10.1007 978 1 59259 261 6 18 ref A specialized form of this technique is the DSA FACE, which is an acronym for DNA sequencer assisted flurophore assisted carbohydrate electrophoresis. DSA FACE has higher resolution and sensitivity than classical FACE. References reflist DEFAULTSORT Fluorophore Assisted Carbohydrate Electrophoresis Category Molecular biology techniques Category Molecular biology ... more details
Wikify date June 2010 Pulsed field gel electrophoresis is a technique used for the separation of large DNA deoxyribonucleic acid DNA molecule s by applying an electric field that periodically changes direction to a gel matrix. Image Microbiologist 01.jpg right thumb 200px A microbiologist running a pulsed field gel electrophoresis test used in bacterial typing. Historical background Standard DNA electrophoresis gel electrophoresis techniques for separation of DNA molecules provided huge advantages for molecular biology research. However, many limitations existed with the standard protocol in that it was unable to separate very large molecules of DNA effectively. DNA molecules larger than 15 20kb migrating through a gel will essentially move together in a size independent manner. At Columbia University in 1984, Schwartz and Charles Cantor Cantor developed a variation on the standard protocol by introducing an alternating voltage gradient to better the resolution of larger molecules. ref Schwartz DC, Cantor CR. Separation of yeast chromosome sized DNAs by pulsed field gradient gel electrophoresis. Cell. 1984 May 37 1 67 75. ref This technique became known as Pulsed Field Gel Electrophoresis PFGE . The development of PFGE expanded the range of resolution for DNA fragments by as much as 2 orders of magnitude. Procedure The procedure for this technique is relatively similar to performing a standard gel electrophoresis except that instead of constantly running the voltage in one direction, the voltage is periodically switched among three directions one that runs through the central axis of the gel and two that run at an angle of 120 degrees either side. The pulse times are equal ... at 0 hours to 60 seconds at 18 hours. This procedure takes longer than normal gel electrophoresis ... References reflist DEFAULTSORT Pulsed Field Gel Electrophoresis Category Biological techniques and tools Category Molecular biology Category Electrophoresis de Pulsed Field Elektrophorese id PFGE ja ... more details
Summary Non free use rationale Description Chemical Reviews cover Source Journal home page Portion all Article Electrophoresis journal Low resolution It is a low resolution version of the journal cover. Purpose The image will be used for identification and critical commentary in the article about this journal and possibly other articles in which a visual identification of the journal will serve an educational purpose. Replaceability As the official journal cover, there is no known free alternative available. If a free alternative is found, this image should be Wikipedia Images and media for deletion nominated for deletion as obsolete. other information The use is purely for non profit reasons, and to educate users on the journal in question. Its use does not limit the copyright owner s rights to sell or market related products or the journal itself in any way. Licensing Non free magazine cover ... more details
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