RNA s. A ribosome is a component of cell biology cells that synthesizes protein chains. It assembles ... title Structural aspects of translation termination on the ribosome journal RNA New York, N.Y. volume ... the ribosome translates the genetic information from the RNA into proteins. Ribosomes do this by binding ... of the ribosome and bind to the messenger RNA sequence. The attached amino acids are then joined together by another part of the ribosome. The ribosome moves along the mRNA, reading its sequence and producing ... to the mRNA, while the larger subunit binds to the tRNA and the amino acids. When a ribosome finishes ... Ribosomes accessdate 2011 04 28 ref The word ribosome comes from ribo nucleic acid and the Greek soma ... Structural biology. The ribosome is a ribozyme journal Science volume 289 issue 5481 pages 878 9 ... win the Nobel Prize . The term ribosome was proposed by scientist Richard B. Roberts in 1958 Quotation ... of the microsome fraction is much too awkward. During the meeting, the word ribosome was suggested ... if ribosome were adopted to designate ribonucleoprotein particles in sizes ranging from 35 to 100S .... Image ribosome shape.png thumb Figure 2 Large red and small blue subunit fit together Ribosomes consist ... than directly participating in catalysis See Ribozyme . Biogenesis Main Ribosome biogenesis In bacterial ... of multiple ribosome gene operon s. In eukaryotes, the process takes place both in the cell cytoplasm ..., as well as assembly of those rRNAs with the ribosomal proteins. Ribosome locations Ribosomes are classified as being either free or membrane bound . Image translation.gif thumb 300px A ribosome translating ... differ only in their spatial distribution they are identical in structure. Whether the ribosome exists ... sequence on the protein being synthesized, so an individual ribosome might be membrane bound when ... residues, cannot be produced in this compartment. Membrane bound ribosomes When a ribosome begins to synthesize proteins that are needed in some organelles, the ribosome making this protein can ... more details
Unreferenced stub auto yes date December 2009 Ribosome biogenesis is the process of making ribosome s. In prokaryotic cells, it takes place in the cytoplasm with the transcription of many ribosome gene operons. In eukaryotes, it takes place both in the cell cytoplasm and in the nucleolus of eukaryotic cells. It involves the coordinated function of over 200 proteins in the synthesis and processing of the four rRNA s, as well as assembly of those rRNAs with the ribosomal proteins.This organelle also involve in the protein synthesis during translation process within the cytoplasm of a cell. In Prokaryotes There are 52 genes that encode the ribosomal proteins and they can be found in 20 operons within prokaryotic DNA. Regulation of ribosome synthesis hinges on the regulation of the rRNA itself. First, a reduction in aminoacyl tRNA will cause the prokaryotic cell to respond by lowering Transcription genetics transcription and translation . This occurs through a series of steps, beginning with stringent factor binding to ribosomes and catalyzing the reaction br GTP ATP pppGpp AMP br The phosphate is then removed and ppGpp will bind to and inhibit RNA polymerase. This binding causes a reduction in rRNA transcription. A reduced amount of rRNA means that ribosomal proteins r proteins will be translated but will not have an rRNA to bind to. Instead, they will negatively feedback and bind to their own mRNA, repressing r protein synthesis. Note that r proteins preferentially bind to its complementary rRNA if it is present, rather than mRNA. The ribosome operons also include the genes for RNA polymerase and elongation factors used in RNA translation . Regulation of all of these genes at once illustrate the coupling between transcription and translation in prokaryotes. In Eukaryotes ... to make a functioning ribosome. See nuclear export for more about the movement of the ribosomal subunit out of the nucleus. DEFAULTSORT Ribosome Biogenesis Category Metabolism Cell biology stub ... more details
Ribosome display is a technique used to perform in vitro protein evolution to create proteins that can bind to a desired ligand . The process results in translated proteins that are associated with their mRNA progenitor which is used, as a complex, to bind to an immobilized ligand in a selection step. The mRNA protein hybrids that bind well are then reverse transcriptase reverse transcribed to cDNA and their sequence amplified via PCR . The end result is a nucleotide sequence that can be used to create tightly binding proteins. Ribosome display process Ribosome display either begins with a DNA sequence or naive library of sequences coding for a specific protein. The sequence is transcribed, and then translated in vitro into protein. However, the DNA library coding for a particular library of binding proteins is genetically fused to a spacer sequence lacking a stop codon. This spacer sequence, when translated, is still attached to the peptidyl tRNA and occupies the ribosomal tunnel, and thus allows the protein of interest to protrude out of the ribosome and fold. What results is a complex of mRNA, ribosome, and protein which can bind to surface bound ligand. This complex is stabilized with the lowering of temperature and the addition of cations such as Mg sup 2 sup . During the subsequent ... to isolate even better binders. Advantages of ribosome display By having the protein progenitor attached to the complex, the processes of ribosome display skips the microarray peptide bead multiple well ... RNA, DNA and phenotype protein . In ribosome display, this link is accomplished during in vitro translation by stabilizing the complex consisting of the ribosome, the mRNA and the nascent, correctly ... first2 A. title In vitro selection and evolution of functional proteins by using ribosome display journal ... first2 A. title In vitro protein evolution by ribosome display and mRNA display journal Imm. Methods .... title Eukaryotic ribosome display with in situ DNA recovery journal Nature year 2007 volume 4 issue ... more details
Orphan date February 2009 Confusing date December 2006 Ribosome shunting is a mechanism of translation genetics translation initiation in which ribosomes physically bypass, or shunt over, parts of the Five prime untranslated region 5 untranslated region to reach the initiation codon . This enables viruses to have more information than usual in an mRNA molecule. Source http ntbiouser.unibe.ch trachsel teaching translation initiation Ribosomal shunt pathway.htm Category Protein biosynthesis virus stub genetics stub ... more details
File Ribosome Nascent chain complex.png thumb Visualisation of an RNC showing the ribosome as a translucent cartoon and the nascent chain as a pink ribbon Ribosome Nascent chain Complex RNC is the term used to refer to the collection of molecules that constitute a ribosome attached to the polypeptide protein that it is synthesising. The synthesis of the nascent polypeptide may be stalled by one of several methods. RNCs are produced and purified in laboratories to study the Molecular Dynamics dynamics , biochemistry , Protein folding folding and Protein protein interaction interactions of both the ribosome and proteins undergoing synthesis. ref name Cabrita2010 cite journal last1 Cabrita first1 Lisa D. last2 Dobson first2 Christopher M. last3 Christodoulou first3 John title Protein folding on the ribosome journal Current Opinion in Structural Biology year 2010 volume 20 pages 33 45 doi 10.1016 j.sbi.2010.01.005 ref ref name Schaffitzel2007 cite journal last1 Schaffitzel first1 Christiane last2 Ban first2 Nenad title Generation of ribosome nascent chain complexes for structural and functional studies journal Journal of Structural Biology year 2007 volume 158 pages 463 471 doi 10.1016 j.jsb.2007.01.005 ref References references organelles Ribosome subunits Gene expression Protein methods Category Ribozymes Category Protein biosynthesis Protein stub ... more details
An internal ribosome entry site , abbreviated IRES , is a nucleotide sequence that allows for translation ... of RNA molecule s that are able to attract the eukaryote eukaryotic ribosome to the mRNA molecule ... journal author Hellen CU, Sarnow P title Internal ribosome entry sites in eukaryotic mRNA molecules ... look at cellular mRNA sequences said to function as internal ribosome entry sites journal Nucleic Acids ... of four putative cellular internal ribosome entry sites journal Proc. Nat. Acad. Sci. volume ... font size 90 margin left 15px Internal ribosome entry sites in viral genomes ref name Hellen align center Virus align center IRES Poliovirus Picornavirus internal ribosome entry site IRES Picornavirus IRES Rhinovirus Picornavirus internal ribosome entry site IRES Picornavirus IRES Encephalomyocarditis virus Picornavirus internal ribosome entry site IRES Picornavirus IRES Foot and mouth disease virus Aphthovirus internal ribosome entry site IRES Aphthovirus IRES Hepatitis A virus Hepatitis A virus internal ribosome entry site IRES Hepatitis A IRES Hepatitis C virus Hepatitis C virus internal ribosome entry site Hepatitis C IRES Classical swine fever virus Pestivirus internal ribosome entry site IRES Pestivirus IRES Bovine viral diarrhea virus Pestivirus internal ribosome entry site IRES Pestivirus ... Cripavirus internal ribosome entry site IRES Rhopalosiphum padi virus Cripavirus internal ribosome entry site IRES Cricket paralysis virus Cripavirus internal ribosome entry site IRES Triatoma virus Cripavirus internal ribosome entry site IRES Kaposi s sarcoma associated herpesvirus Kaposi s sarcoma associated herpesvirus internal ribosome entry site IRES Kaposi s sarcoma associated herpesvirus IRES ... ribosome entry sites in cellular mRNAs ref name Hellen align center Protein type align center Proteins Growth factor s Fibroblast growth factor FGF 1 internal ribosome entry site IRES FGF 1 IRES and FGF 2 internal ribosome entry site IRES FGF 2 IRES , Platelet derived growth factor B PDGF C sis internal ... more details
protein Name mitochondrial ribosome recycling factor caption image width HGNCid 7234 Symbol MRRF AltSymbols EntrezGene 92399 OMIM 604602 RefSeq NM 138777 UniProt Q96E11 PDB ECnumber Chromosome 9 Arm q Band 32 LocusSupplementaryData q34.1 Ribosome Recycling Factor RRF is a protein found in bacterial cell biology cell s as well as eukaryotic organelles , specifically mitochondria and chloroplasts . It functions to recycle ribosomes after completion of protein synthesis . Discovery The ribosome recycling factor was discovered in the early 1970s by the work of Akira Kaji and Akikazu Hiroshima at the University of Pennsylvania . ref cite journal author Hirashima A, Kaji A title Factor dependent breakdown of polysomes journal Biochem. Biophys. Res. Commun. volume 41 issue 4 pages 877 83 year 1970 month November pmid 4920474 url http linkinghub.elsevier.com retrieve pii 0006 291X 70 90165 8 doi 10.1016 0006 291X 70 90165 8 ref ref cite journal author Hirashima A, Kaji A title Factor dependent release of ribosomes from messenger RNA. Requirement for two heat stable factors journal J. Mol. Biol ... A, Kaji A title Purification and properties of ribosome releasing factor journal Biochemistry ... called Ribosome Releasing Factor but is now called Ribosome Recycling Factor. Function Recent evidence ... H, Kaji A title The ribosome recycling step Consensus or controversy? journal Trends Biochem. Sci ... Janosi L, Shimizu I, Kaji A title Ribosome recycling factor ribosome releasing factor is essential ... mitochondrial ribosome recycling factor RRF journal Nucleic Acids Res. volume 31 issue 14 pages 4218 ... M, Al Karadaghi S, Hirokawa G, Kaji A, Liljas A title Crystal structure of Thermotoga maritima ribosome .... title Visualization of ribosome recycling factor on the Escherichia coli 70S ribosome functional implications ... reflist See also Translation genetics Prokaryotic translation Ribosome External links MeshName ribosome releasing factor Category Proteins ... more details
Infobox protein family Symbol RIP Name Ribosome inactivating protein image PDB 1paf EBI.jpg width caption Structure of pokeweed antiviral protein. ref name pmid8411176 cite journal author Monzingo AF, Collins EJ, Ernst SR, Irvin JD, Robertus JD title The 2.5 A structure of pokeweed antiviral protein journal J. Mol. Biol. volume 233 issue 4 pages 705 15 year 1993 month October pmid 8411176 doi 10.1006 jmbi.1993.1547 url ref Pfam PF00161 Pfam clan InterPro IPR001574 SMART PROSITE PDOC00248 MEROPS SCOP 1paf TCDB OPM family OPM protein PDB PDB 1abr PDB 1aha PDB 1ahb PDB 1ahc PDB 1apa PDB 1apg PDB 1br5 PDB 1br6 PDB 1bry PDB 1cf5 A ribosome inactivating protein is a protein synthesis inhibitor that acts at the ribosome . ref MeshName Ribosome Inactivating Proteins ref . A number of bacterial and plant toxins act by inhibiting protein synthesis in eukaryotic cells. The toxins of the Shiga toxin Shiga and ricin family inactivate 60S ribosomal subunits by an N glycosidic cleavage which releases a specific adenine base from the sugar phosphate backbone of 28S rRNA ref name PUB00001357 cite journal doi 10.1111 j.1432 1033.1988.tb13756.x author Igarashi K, Endo Y, Tsurugi K, Takeda Y, Ogasawara T, Yutsudo T title Site of action of a Vero toxin VT2 from Escherichia coli O157 H7 and of Shiga toxin on eukaryotic ribosomes. RNA N glycosidase activity of the toxins journal Eur. J. Biochem. volume 171 issue 1 pages 45 50 year 1988 pmid 3276522 ref ref name PUB00001175 cite journal author May MJ, Hartley MR, Roberts LM, Krieg PA, Osborn RW, Lord JM title Ribosome inactivation by ricin A chain ... amino acid residues in ribosome inactivating proteins from plants journal Biochimie volume 73 ... toxins, and type I e.g. trichosanthin and luffin and type II e.g. ricin , agglutinin and abrin ribosome ..., et al. title Structure function study of maize ribosome inactivating protein implications for the internal ... InterPro content IPR001574 biochem stub Category Ribosome Category Protein domains fr Prot ine inactivant ... more details
Summary Visualisation of a Ribosome Nascent chain Complex r ibosome n ascent chain c omplex RNC . The green and blue translucent cartoon show the 30S and 50S subunits of a 70S prokaryotic ribosome. The magenta ribbon shows the path of a nascent polypeptide chain through the exit tunnel of the ribosome and into the surrounding space. Created with PyMol using PDBs 2J00 and 2J01 for the ribosome co ordinates. Created for illustrative purposes for Wikipedia. Licensing self cc by 3.0 ... more details
Infobox rfam Name Connexin 43 internal ribosome entry site IRES image RF00487.jpg width caption Predicted secondary structure and sequence conservation of IRES Cx43 Symbol IRES Cx43 AltSymbols Rfam RF00487 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The connexin 43 internal ribosome entry site IRES is an Cis regulatory element RNA element present in the Five prime untranslated region 5 UTR of the mRNA of connexin 43 and allows cap independent translation. The connexin 43 internal ribosome entry site IRES allows cap independent translation during conditions such as heat shock and stress. ref cite journal last Schiavi first A coauthors Hudder A, Werner R year 1999 title Connexin43 mRNA contains a functional internal ribosome entry site journal FEBS Lett volume 464 pages 118&ndash 122 pmid 10618489 doi 10.1016 S0014 5793 99 01699 3 issue 3 ref References reflist 1 External links Rfam id RF00487 name Connexin 43 internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Tobamovirus internal ribosome entry site IRES image RF00225.jpg width caption Predicted secondary structure and sequence conservation of IRES Tobamo Symbol IRES Tobamo AltSymbols Tobamo IRES Rfam RF00225 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Virus es GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The Tobamovirus internal ribosome entry site IRES is an element that allows cap and end independent translation biology translation of mRNA in the host cell. ref cite journal last Ivanov first PA coauthors Karpova OV, Skulachev MV, Tomashevskaya OL, Rodionova NP, Dorokhov YuL, Atabekov JG year 1997 title A tobamovirus genome that contains an internal ribosome entry site functional in vitro journal Virology volume 232 pages 32&ndash 43 pmid 9185586 doi 10.1006 viro.1997.8525 issue 1 ref The internal ribosome entry site IRES achieves this by mediating the internal initiation of translation by recruiting a ribosomal 43S pre initiation complex directly to the initiation codon and eliminates the requirement for the eukaryotic initiation factor , eIF4F. ref cite journal last Kolupaeva first VG coauthors Pestova TV, Hellen CU year 2000 title Ribosomal binding to the internal ribosomal entry site of classical swine fever virus journal RNA volume 6 pages 1791&ndash 1807 pmid 11142379 doi 10.1017 S1355838200000662 issue 12 pmc 1370049 ref See also Mnt IRES N myc internal ribosome entry site IRES N myc IRES TrkB IRES References reflist 1 External links Rfam id RF00225 name Tobamovirus internal ribosome entry site IRES molecular cell biology stub Category Cis regulatory RNA elements ... more details
Infobox rfam Name Alpha operon ribosome binding site image RF00140.jpg width caption Predicted secondary structure and sequence conservation of Alpha RBS Symbol Alpha RBS AltSymbols Rfam RF00140 miRBase miRBase family RNA type Cis regulatory element Cis reg Tax domain Bacteria GO SO SO 0000233 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The alpha operon ribosome binding site in bacteria is surrounded by this complex pseudoknot ted RNA structure. Translation of the mRNA produces 4 ribosomal protein products, one of which S4 acts as a translational repressor by binding to the nested pseudoknot region. The mechanism of repression is thought to involve a conformational switch in the pseudoknot region and ribosome entrapment. ref cite journal last Schlax first PJ coauthors Xavier KA, Gluick TC, Draper DE year 2001 title Translational repression of the Escherichia coli alpha operon mRNA importance of an mRNA conformational switch and a ternary entrapment complex journal J Biol Chem volume 276 pages 38494&ndash 38501 pmid 11504736 doi 10.1074 jbc.M106934200 issue 42 ref References reflist 1 External links Rfam id RF00140 name Alpha operon ribosome binding site Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Bag 1 internal ribosome entry site IRES image RF00222.jpg width caption Predicted secondary structure and sequence conservation of IRES Bag1 Symbol IRES Bag1 AltSymbols Bag1 IRES Rfam RF00222 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The bag 1 internal ribosome entry site IRES is a cis acting element located in the Five prime untranslated region 5 untranslated region of the BAG 1 protein mRNA. Its effects apoptosis through IRES mediated translation of the BAG 1 protein. ref name pmid11494137 cite journal author Coldwell MJ, deSchoolmeester ML, Fraser GA, Pickering BM, Packham G, Willis AE title The p36 isoform of BAG 1 is translated by internal ribosome entry following heat shock journal Oncogene volume 20 issue 30 pages 4095 100 year 2001 pmid 11494137 doi 10.1038 sj.onc.1204547 ref When expressed, the BAG 1 protein is known to enhance the anti apoptotic properties of the Bcl 2 protein. Although bag 1 translation usually occurs via a cap dependent mechanism it has been found to contain an IRES in its 5 UTR. Translation via the IRES has been found to be common following heat shock when cap dependent scanning is compromised. ref name pmid11494137 References references External links Rfam id RF00222 name Bag 1 internal ribosome entry site IRES DEFAULTSORT Bag 1 Internal Ribosome Entry Site Ires Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Connexin 32 internal ribosome entry site IRES image RF00484.jpg width caption Predicted secondary structure and sequence conservation of IRES Cx32 Symbol IRES Cx32 AltSymbols Rfam RF00484 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The connexin 32 internal ribosome entry site IRES is an Cis regulatory element RNA element present in the Five prime untranslated region 5 UTR of the mRNA of connexin 32 and allows cap independent translation. This internal ribosome entry site IRES allows cap independent translation during conditions such as heat shock and stress. ref cite journal last Hudder first A coauthors Werner R year 2000 title Analysis of a Charcot Marie Tooth disease mutation reveals an essential internal ribosome entry site element in the connexin 32 gene journal J Biol Chem volume 275 pages 34586&ndash 34591 pmid 10931843 doi 10.1074 jbc.M005199200 issue 44 ref References reflist 1 External links Rfam id RF00484 name Connexin 32 internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Cripavirus internal ribosome entry site IRES image RF00458.jpg width caption Predicted secondary structure and sequence conservation of IRES Cripavirus Symbol IRES Cripavirus AltSymbols Rfam RF00458 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Virus es GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData Image PDB 1s9s EBI.png thumb 200px left A 3D representation of a Cripavirus IRES. This is a view of the tertiary structure of the ribosome bound cricket paralysis virus IRES RNA. ref name pmid11233983 ref The Cripavirus internal ribosome entry site IRES is an cis regulatory element RNA element required for the production of capsid proteins through IRES mediated Translation biology translation . ref name pmid11233983 cite journal last Kanamori first Y coauthors Nakashima N year 2001 title A tertiary structure model of the internal ribosome entry site IRES for methionine independent initiation of translation journal RNA volume 7 pages 266&ndash 274 pmid 11233983 doi 10.1017 S1355838201001741 issue 2 pmc 1370084 ref References reflist 1 External links Rfam id RF00458 name Cripavirus internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name FGF 1 internal ribosome entry site IRES image RF00387.jpg width caption Predicted secondary structure and sequence conservation of IRES FGF1 Symbol IRES FGF1 AltSymbols Rfam RF00387 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The FGF 1 internal ribosome entry site IRES is an Cis regulatory element RNA element present in the Five prime untranslated region 5 UTR of the mRNA of fibroblast growth factor 1 and allows cap independent translation. It is thought that FGF 1 internal ribosome entry site IRES activity is strictly controlled and highly tissue specific. ref cite journal last Martineau first Y coauthors Le Bec C, Monbrun L, Allo V, Chiu IM, Danos O, Moine H, Prats H, Prats AC year 2004 title Internal Ribosome Entry Site Structural Motifs Conserved among Mammalian Fibroblast Growth Factor 1 Alternatively Spliced mRNAs journal Mol Cell Biol volume 24 pages 7622&ndash 7635 pmid 15314170 doi 10.1128 MCB.24.17.7622 7635.2004 issue 17 pmc 507008 ref References references External links Rfam id RF00387 name FGF 1 internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Picornavirus internal ribosome entry site IRES image RF00229.jpg width caption Predicted secondary structure and sequence conservation of IRES Picorna Symbol IRES Picorna AltSymbols Rfam RF00229 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Virus es GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData This family represents the Picornavirus internal ribosome entry site IRES . IRES elements allow cap and end independent translation biology translation of mRNA in the host cell. It has been found that La autoantigen La is required for Coxsackievirus B3 CVB3 IRES mediated translation, and it has been suggested that La may be required for the efficient translation of the viral RNA in the pancreas . ref cite journal last Ray first PS coauthors Das S year 2002 title La autoantigen is required for the internal ribosome entry site mediated translation of Coxsackievirus B3 RNA journal Nucleic Acids Res volume 30 pages 4500&ndash 4508 pmid 12384597 doi 10.1093 nar gkf583 issue 20 pmc 137146 ref ref cite journal last Liu first Z coauthors Carthy CM, Cheung P, Bohunek L, Wilson JE, McManus BM, Yang D year 1999 title Structural and functional analysis of the 5 untranslated region of coxsackievirus B3 RNA In vivo translational and infectivity studies of full length mutants journal Virology volume 265 pages 206&ndash 217 pmid 10600593 doi 10.1006 viro.1999.0048 issue 2 ref References reflist 1 External links Rfam id RF00229 name Picornavirus internal ribosome entry site IRES molecular cell biology stub Category Cis regulatory RNA elements Category Internal ribosome entry site ... more details
Infobox rfam Name Aphthovirus internal ribosome entry site IRES image RF00210.jpg width caption Predicted secondary structure and sequence conservation of IRES Aptho Symbol IRES Aptho AltSymbols Aptho IRES Rfam RF00210 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Virus es GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData This family represents the internal ribosome entry site IRES of the aphthovirus es . ref cite journal last Fernandez Miragall first O coauthors Martinez Salas E year 2003 title Structural organization of a viral IRES depends on the integrity of the GNRA motif journal RNA volume 9 pages 1333&ndash 1344 pmid 14561883 doi 10.1261 rna.5950603 issue 11 pmc 1287055 ref IRES elements allow cap and end independent translation of mRNA in the host cell. The IRES achieves this by mediating the internal initiation of translation by recruiting a ribosomal 43S pre initiation complex directly to the initiation codon and eliminates the requirement for the eukaryotic initiation factor eIF4F. ref cite journal last Kolupaeva first VG coauthors Pestova TV, Hellen CU year 2000 title Ribosomal binding to the internal ribosomal entry site of classical swine fever virus journal RNA volume 6 pages 1791&ndash 1807 pmid 11142379 doi 10.1017 S1355838200000662 issue 12 pmc 1370049 ref References reflist 1 External links Rfam id RF00210 name Aphthovirus internal ribosome entry site IRES Category Cis regulatory RNA elements Category Internal ribosome entry site molecular cell biology stub ... more details
Infobox rfam Name bip internal ribosome entry site IRES image RF00223.jpg width caption Predicted secondary structure and sequence conservation of IRES Bip Symbol IRES Bip AltSymbols Bip IRES Rfam RF00223 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The BiP internal ribosome entry site IRES is an Cis regulatory element RNA element present in the Five prime untranslated region 5 UTR of the mRNA of BiP protein and allows cap independent translation. BiP protein expression has been found to be significantly enhanced by the heat shock response due to internal ribosome entry site IRES dependent translation. It is thought that this translational mechanism is essential for the survival of cells under stress 1 . References reflist 1 1 cite journal last Kim first YK coauthors Jang SK year 2002 title Continuous heat shock enhances translational initiation directed by internal ribosomal entry site journal Biochem Biophys Res Commun volume 297 pages 224&ndash 231 pmid 12237106 doi 10.1016 S0006 291X 02 02154 X issue 2 External links Rfam id RF00223 name bip internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Pestivirus internal ribosome entry site IRES image RF00209.jpg width caption Predicted secondary structure and sequence conservation of IRES Pesti Symbol IRES Pesti AltSymbols Pesti IRES Rfam RF00209 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Virus es GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData This family represents the internal ribosome entry site IRES of the pestivirus es. The pestivirus IRES allows cap and end independent Translation biology translation of mRNA in the host cell. The IRES achieves this by mediating the internal initiation of translation by recruiting a ribosomal 43S pre initiation complex directly to the initiation codon and eliminates the requirement for the eukaryotic initiation factor , eIF4F. ref name Kolupaeva cite journal last Kolupaeva first VG coauthors Pestova TV, Hellen CU year 2000 title Ribosomal binding to the internal ribosomal entry site of classical swine fever virus journal RNA volume 6 pages 1791&ndash 1807 pmid 11142379 doi 10.1017 S1355838200000662 issue 12 pmc 1370049 ref The classical swine fever virus UTR describedappears to be longer at the 5 end than other pestivirus UTRs. ref name Kolupaeva This family represents the conserved core. References reflist 1 External links Rfam id RF00209 name Pestivirus internal ribosome entry site IRES Category Cis regulatory RNA elements Category Internal ribosome entry site molecular cell biology stub ... more details
Infobox rfam Name FGF 2 internal ribosome entry site IRES image RF00224.jpg width caption Predicted secondary structure and sequence conservation of IRES FGF2 Symbol IRES FGF2 AltSymbols IRES FGF FGF IRES Rfam RF00224 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The FGF 2 internal ribosome entry site is an Cis regulatory element RNA element present in the 5 UTR of the mRNA of fibroblast growth factor 2. It has been found that the FGF 2 internal ribosome entry site IRES activity is strictly controlled and highly tissue specific. It is thought that translational IRES dependent activation of FGF 2 plays a vital role in embryogenesis and in the adult brain 1 . When expressed the fibroblast growth factor 2 FGF 2 protein plays a pivotal role in cell proliferation, differentiation and survival as well as being involved in wound healing 1,2 . References reflist 1 1 cite journal last Creancier first L coauthors Morello D, Mercier P, Prats AC year 2000 title Fibroblast growth factor 2 internal ribosome entry site IRES activity ex vivo and in transgenic mice reveals a stringent tissue specific regulation journal J Cell Biol volume 150 pages 275&ndash 281 pmid 10893274 doi 10.1083 jcb.150.1.275 issue 1 pmc 2185555 2 cite journal last Vagner first S coauthors Gensac MC, Maret A, Bayard F, Amalric F, Prats H, Prats AC year 1995 title Alternative translation of human fibroblast growth factor 2 mRNA occurs by internal entry of ribosomes journal Mol Cell Biol volume 15 pages 35&ndash 44 pmid 7799942 issue 1 pmc 231905 External links Rfam id RF00224 name FGF 2 internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name APC internal ribosome entry site IRES image RF00462.jpg width caption Predicted secondary structure and sequence conservation of IRES APC Symbol IRES APC AltSymbols Rfam RF00462 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The APC internal ribosome entry site IRES is an RNA element which is located in the coding sequence of the APC gene APC gene . APC is a tumour suppressor gene which is associated with the inherited disease Familial adenomatous polyposis adenomatous polyposis coli APC . It is thought that IRES mediated translation of APC is important for an apoptotic cascade. ref name pmid12034871 cite journal last Heppner first Goss K coauthors Trzepacz C, Tuohy TM, Groden J year 2002 title Attenuated APC alleles produce functional protein from internal translation initiation journal Proc Natl Acad Sci USA volume 99 pages 8161&ndash 8166 pmid 12034871 doi 10.1073 pnas.112072199 issue 12 pmc 123038 ref References reflist 1 External links Rfam id RF00462 name APC internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name n myc internal ribosome entry site IRES image RF00226.jpg width caption Predicted secondary structure and sequence conservation of IRES n myc Symbol IRES n myc AltSymbols n myc IRES Rfam RF00226 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The N myc internal ribosome entry site IRES is an cis regulatory element RNA element found in the n myc gene. The myc family of genes when expressed are known to be involved in the control of cell growth, differentiation and apoptosis. n myc mRNA has an alternative method of translation via an internal ribosome entry site where ribosome s are recruited to the IRES located in the 5 UTR thus bypassing the typical eukaryotic cap dependent translation pathway. ref cite journal last Jopling first CL coauthors Willis AE year 2001 title N myc translation is initiated via an internal ribosome entry segment that displays enhanced activity in neuronal cells journal Oncogene volume 20 pages 2664&ndash 2670 pmid 11420678 doi 10.1038 sj.onc.1204404 issue 21 ref See also Mnt IRES Tobamovirus internal ribosome entry site IRES Tobamovirus IRES TrkB IRES References reflist 1 External links Rfam id RF00226 name n myc internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
Infobox rfam Name Hepatitis C virus internal ribosome entry site image RF00061.jpg width caption Predicted secondary structure and sequence conservation of IRES HCV Symbol IRES HCV AltSymbols HCV IRES Rfam RF00061 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Virus es GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData Protein translation of most eukaryotic messenger RNA mRNA s requires association of Met tRNA , several eukaryotic initiation factors , and Guanosine triphosphate GTP with the 40S ribosomal subunit. The ribosome can only bind the capped mRNA after binding to the initiator tRNA. Translation of hepatitis C virus HCV mRNA is initiated by a different mechanism from the usual 5 cap binding model. ref cite journal last Lytle first JR coauthors Wu L, Robertson HD year 2002 title Domains on the hepatitis C virus internal ribosome entry site for 40s subunit binding journal RNA volume 8 pages 1045&ndash 1055 pmid 12212848 doi 10.1017 S1355838202029965 issue 8 pmc 1370315 ref This alternate mechanism relies on the direct binding of the 40S ribosomal subunit by the internal ribosome entry site IRES in the 5 UTR of HCV RNA. HCV IRES adopts a complex structure, and may differ significantly from Picornavirus internal ribosome entry site IRES IRES elements ... ribosome entry. ref cite journal last Beales first LP coauthors Rowlands DJ, Holzenburg A year 2001 title The internal ribosome entry site IRES of hepatitis C virus visualized by electron microscopy ... C virus internal ribosome entry site a new target for antiviral research journal Biochem Soc Trans ... ribosome subunit. Moreover, it binds 40S in such a manner that AUG initiator codon is positioned in ribosomal ... reflist 1 External links Rfam id RF00061 name Hepatitis C virus internal ribosome entry site molecular cell biology stub Category Cis regulatory RNA elements Category Internal ribosome entry ... more details
Infobox rfam Name c sis internal ribosome entry site IRES image RF00549.jpg width caption Predicted secondary structure and sequence conservation of IRES c sis Symbol IRES c sis AltSymbols Rfam RF00549 miRBase miRBase family RNA type Cis regulatory element Cis reg Internal ribosome entry site IRES Tax domain Eukaryota GO GO 0043022 SO SO 0000243 CAS number EntrezGene HGNCid OMIM PDB RefSeq Chromosome Arm Band LocusSupplementaryData The c sis internal ribosome entry site IRES is a cis regulatory element RNA element found in the 5 UTR of the PDGF beta chain gene. The internal ribosome entry site contains three modules that can individually mediate internal ribosome entry. However, the full length sequence is required for maximal IRES activity. It is thought that the three IRES elements are somehow responsive to cellular changes and act to regulate the level of translation . ref cite journal last Sella first O coauthors Gerlitz G, Le SY, Elroy Stein O year 1999 title Differentiation induced internal translation of c sis mRNA analysis of the cis elements and their differentiation linked binding to the hnRNP C protein journal Mol Cell Biol volume 19 pages 5429&ndash 5440 pmid 10409733 issue 8 pmc 84385 ref References reflist 1 External links Rfam id RF00549 name c sis internal ribosome entry site IRES Category Cis regulatory RNA elements molecular cell biology stub ... more details
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