chembox Watchedfields changed verifiedrevid 451895055 Name Arabinose ImageFile DL Arabinose.svg IUPACName Arabinose OtherNames Pectinose Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 59687 InChI 1 C5H10O5 c6 1 3 8 5 10 4 9 2 7 h1,3 5,7 10H,2H2 t3 ,4 ,5 m1 s1 ChEBI Ref ebicite correct EBI ChEBI 46983 SMILES O C C H O C H O C H O CO InChIKey PYMYPHUHKUWMLA WDCZJNDABW SMILES1 C C H C H C H C O O O O O StdInChI Ref stdinchicite correct chemspider StdInChI 1S C5H10O5 c6 1 3 8 5 10 4 9 2 7 h1,3 5,7 10H,2H2 t3 ,4 ,5 m1 s1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey PYMYPHUHKUWMLA WDCZJNDASA N CASNo 147 81 9 CASNo Ref cascite correct CAS CASNo1 10323 20 3 CASNo1 Comment small D small CASNo1 Ref cascite correct CAS CASNo2 5328 37 0 CASNo2 ... Arabinose is an aldopentose a monosaccharide containing five carbon atom s, and including an aldehyde ... However, small L small arabinose is in fact more common than small D small arabinose in nature and is found in nature as a component of biopolymers such as hemicellulose and pectin . The L arabinose operon small L small arabinose operon is a very important operon in molecular biology and bioengineering. A classic method for the organic synthesis of arabinose from glucose is the Wohl degradation . ref OrgSynth first G za last Braun title D Arabinose prep CV3P0101 volume 20 pages 14 year 1940 ... Arabinose align center File Alpha D Arabinofuranose.svg 100px br small D small Arabinofuranose align ... 110px br small D small Arabinopyranose Etymology Arabinose gets its name from gum arabic , from which it was first isolated. ref http www.merriam webster.com dictionary arabinose Merriam Webster Dictionary ref Use Arabinose is used as a culture medium for certain bacteria. Notes reflist ... Arabinosa de Arabinose es Arabinosa eo Arabinozo fr Arabinose fy Arabinoaze gl Arabinosa it Arabinosio he hu Arabin z nl Arabinose ja pl Arabinoza pt Arabinose ru sr Arabinoza ... more details
enzyme Name arabinose isomerase EC number 5.3.1.3 CAS number 9023 81 8 IUBMB EC number 5 3 1 3 GO code 0008790 image width caption In enzymology , an arabinose isomerase EC number 5.3.1.3 is an enzyme that catalysis catalyzes the chemical reaction D arabinose math rightleftharpoons math D ribulose Hence, this enzyme has one substrate biochemistry substrate , D arabinose , and one product chemistry product , D ribulose . This enzyme belongs to the family of isomerase s, specifically those intramolecular oxidoreductases interconverting aldoses and ketoses. The systematic name of this enzyme class is D arabinose aldose ketose isomerase . Other names in common use include D arabinose L fucose isomerase , D arabinose isomerase , L fucose isomerase , and D arabinose ketol isomerase . Structural studies As of late 2007, only one tertiary structure structure has been solved for this class of enzymes, with the Protein Data Bank PDB accession code PDB link 1FUI . References reflist 1 cite journal author Cohen SS date 1953 title Studies on D ribulose and its enzymatic conversion to D arabinose journal J. Biol. Chem. volume 201 issue 1 pages 71&ndash 84 pmid 13044776 cite journal author Green M and Cohen SS date 1956 title Enzymatic conversion of L fucose to L fuculose journal J. Biol. Chem. volume 219 issue 2 pages 557&ndash 568 pmid 13319278 isomerase stub Category EC 5.3.1 Category Enzymes of known structure ... more details
enzyme Name L arabinose isomerase EC number 5.3.1.4 CAS number 9023 80 7 IUBMB EC number 5 3 1 4 GO code 0008733 image width caption Infobox protein family Symbol Arabinose Isome Name Arabinose isomerase image PDB 2ajt EBI.jpg width caption crystal structure of l arabinose isomerase from e.coli Pfam PF02610 Pfam clan InterPro IPR003762 SMART PROSITE MEROPS SCOP TCDB OPM family OPM protein CAZy CDD In enzymology , a L arabinose isomerase EC number 5.3.1.4 is an enzyme that catalysis catalyzes the chemical reaction L arabinose math rightleftharpoons math L ribulose Hence, this enzyme has one substrate biochemistry substrate , L arabinose , and one product chemistry product , L ribulose . This enzyme belongs to the family of isomerase s, specifically those intramolecular oxidoreductase s interconverting aldose s and ketose s. The systematic name of this enzyme class is L arabinose aldose ketose isomerase . This enzyme participates in pentose and glucuronate interconversions . This enzyme catalyses the coversion of L arabinose to L ribulose as the first step in the pathway of L arabinose utilization as a carbon source. ref name pmid9084180 cite journal author Sa Nogueira I, Nogueira TV, Soares S, de Lencastre H title The Bacillus subtilis L arabinose ara operon nucleotide sequence, genetic organization and expression journal Microbiology Reading, Engl. volume 143 Pt 3 issue pages 957 69 year 1997 month March pmid 9084180 doi url ref Structural studies As of late 2007, two tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 2AJT and PDB link 2HXG . References reflist Further reading reflist 1 cite journal author HEATH EC, HORECKER BL, SMYRNIOTIS PZ, TAKAGI Y year 1958 title Pentose fermentation by Lactobacillus plantarum. II. L arabinose isomerase journal J. Biol. Chem. volume 231 pages 1031&ndash 7 pmid ... of L arabinose isomerase from Lactobacillus gayonii journal Biochim. Biophys. Acta. volume ... more details
enzyme Name UDP arabinose 4 epimerase EC number 5.1.3.5 CAS number 9024 18 4 IUBMB EC number 5 1 3 5 GO code 0050373 image width caption In enzymology , an UDP arabinose 4 epimerase EC number 5.1.3.5 is an enzyme that catalysis catalyzes the chemical reaction UDP L arabinose math rightleftharpoons math UDP D xylose Hence, this enzyme has one substrate biochemistry substrate , UDP L arabinose , and one product chemistry product , UDP D xylose . This enzyme belongs to the family of isomerase s, specifically those racemase s and epimerase s acting on carbohydrate s and derivatives. The systematic name of this enzyme class is UDP L arabinose 4 epimerase . Other names in common use include uridine diphosphoarabinose epimerase , UDP arabinose epimerase , uridine 5 diphosphate D xylose 4 epimerase , and UDP D xylose 4 epimerase . This enzyme participates in nucleotide sugars metabolism . References reflist 1 cite journal author FEINGOLD DS, NEUFELD EF, HASSID WZ date 1960 title The 4 epimerization and decarboxylation of uridine diphosphate D glucuronic acid by extracts from Phaseolus aureus seedlings journal J. Biol. Chem. volume 235 pages 910&ndash 3 pmid 13821949 isomerase stub Category EC 5.1.3 Category Enzymes of unknown structure ... more details
The small L small arabinose operon of the model organism model bacterium Escherichia coli has been a focus for research in molecular biology for over 40 years, and has been investigated extensively at the Genetics genetic , biochemical , physiological , and biophysical levels. It is controlled by a dual positive and negative system. There are 3 structural genes araB , araA , and araD . They encode the metabolic enzymes for breaking down the monosaccharide sugar arabinose into xylulose small D small xylulose 5 phosphate , which is then metabolised via the pentose phosphate pathway . The initiator region, containing an operator site as well as a promoter, is called araI the last letter of araI is an uppercase letter i . Near this site lies the araC gene, which encodes an activator protein. ref cite doi 10.1111 j.1574 6976.2010.00226.x ref The AraC protein binds to initiator region araI . class wikitable Metabolism of arabinose in E. coli Substrate Protein s Function Reversible Product small L small arabinose AraA isomerase yes small L small ribulose small L small ribulose AraB ribulokinase no small L small ribulose phosphate small L small ribulose phosphate AraD epimerase yes small D small xylulose phosphate Activation If arabinose is present, it builds a complex AraC arabinose br This complex is needed for RNA polymerase to bind to the promoter and transcribe the ara operon. Also for activation the binding of another structure to araI is needed CAP cyclic AMP br So the activation depends on the presence of arabinose and cAMP. Repression If arabinose is absent, the AraC protein assumes a different conformation. In this conformation the AraC protein binds to the araI DNA region as well as to the ara0 DNA region. This causes the DNA to form a loop, preventing transcription of the downstream ... of the small L small arabinose operon of Escherichia coli journal Trends in Genetics volume 16 issue ... author Schleif, R pmid 11102706 Category Gene expression fr Op ron arabinose id Operon ara nl Arabinose ... more details
enzyme Name D arabinose 1 dehydrogenase EC number 1.1.1.116 CAS number 37250 47 8 IUBMB EC number 1 1 1 116 GO code 0047816 image width caption In enzymology , a D arabinose 1 dehydrogenase EC number 1.1.1.116 is an enzyme that catalysis catalyzes the chemical reaction D arabinose NAD sup sup math rightleftharpoons math D arabinono 1,4 lactone NADH H sup sup Thus, the two substrate biochemistry substrates of this enzyme are D arabinose and nicotinamide adenine dinucleotide NAD sup sup , whereas its 3 product chemistry products are D arabinono 1,4 lactone , nicotinamide adenine dinucleotide NADH , and hydrogen ion H sup sup . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the CH OH group of donor with NAD or NADP as acceptor. The systematic name of this enzyme class is D arabinose NAD 1 oxidoreductase . Other names in common use include NAD pentose dehydrogenase , and arabinose fucose dehydrogenase . References reflist 1 cite journal author Palleroni NJ and Doudoroff M year 1957 title Metabolism of carbohydrates by Pseudomonas saccharophilla. III Oxidation of D arabinose journal J. Bacteriol. volume 74 issue 2 pages 180&ndash 185 pmid 13475218 pmc 289912 cite journal author Schiwara HW, Domschke W, Domagk GF year 1968 title Sugar dehydrogenases in mammalian liver. I. Differentiation of various sugar dehydrogenases from pig liver by disc electrophoresis and ion exchange chromatography journal Hoppe. Seylers. Z. Physiol. Chem. volume 349 pages 1575&ndash 81 pmid 4393642 issue 11 Category EC 1.1.1 Category NADH dependent enzymes Category Enzymes of unknown structure 1.1.1 enzyme stub it D arabinosio 1 deidrogenasi ja D 1 ... more details
enzyme Name L arabinose 1 dehydrogenase EC number 1.1.1.46 CAS number 9028 52 8 IUBMB EC number 1 1 1 46 GO code 0050022 image width caption In enzymology , a L arabinose 1 dehydrogenase EC number 1.1.1.46 is an enzyme that catalysis catalyzes the chemical reaction L arabinose NAD sup sup math rightleftharpoons math L arabinono 1,4 lactone NADH H sup sup Thus, the two substrate biochemistry substrates of this enzyme are L arabinose and nicotinamide adenine dinucleotide NAD sup sup , whereas its 3 product chemistry products are L arabinono 1,4 lactone , nicotinamide adenine dinucleotide NADH , and hydrogen ion H sup sup . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the CH OH group of donor with NAD or NADP as acceptor. The systematic name of this enzyme class is L arabinose NAD 1 oxidoreductase . This enzyme participates in ascorbate and aldarate metabolism . References reflist 1 cite journal author Weimberg R and Doudoroff M date 1955 title The oxidation of L arabinose by Pseudomonas saccharophila journal J. Biol. Chem. volume 217 pages 607&ndash 624 pmid 13271422 issue 2 1.1.1 enzyme stub Category EC 1.1.1 Category NADH dependent enzymes Category Enzymes of unknown structure it L arabinosio 1 deidrogenasi ja L 1 ... more details
enzyme Name D arabinose 1 dehydrogenase NAD P EC number 1.1.1.117 CAS number 37250 48 9 IUBMB EC number 1 1 1 117 GO code 0045290 image width caption In enzymology , a D arabinose 1 dehydrogenase NAD P EC number 1.1.1.117 is an enzyme that catalysis catalyzes the chemical reaction D arabinose NAD P math rightleftharpoons math D arabinono 1,4 lactone NAD P H H sup sup The 3 substrate biochemistry substrates of this enzyme are D arabinose , nicotinamide adenine dinucleotide NAD sup sup , and nicotinamide adenine dinucleotide phosphate NADP sup sup , whereas its 4 product chemistry products are D arabinono 1,4 lactone , nicotinamide adenine dinucleotide NADH , nicotinamide adenine dinucleotide phosphate NADPH , and hydrogen ion H sup sup . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the CH OH group of donor with NAD or NADP as acceptor. The systematic name of this enzyme class is D arabinose NAD P 1 oxidoreductase . This enzyme is also called D arabinose 1 dehydrogenase NAD P . Structural studies As of late 2007, only one tertiary structure structure has been solved for this class of enzymes, with the Protein Data Bank PDB accession code PDB link 2H6E . References reflist 1 cite journal author Cline AL, Hu AS date 1965 title The isolation of three sugar dehydrogenases from a sic psuedomonad journal J. Biol. Chem. volume 240 pages 4488&ndash 92 pmid 5845847 issue 11 cite journal author Cline AL, Hu AS date 1965 title Enzymatic characterization and comparison of three sugar dehydrogenases from a pseudomonad journal J. Biol. Chem. volume 240 pages 4493&ndash 7 pmid 5845848 issue 11 cite journal author Cline AL, Hu AS date 1965 title Some physical properties of three sugar dehydrogenases from a pseudomonad journal J. Biol. Chem. volume 240 pages 4498&ndash 502 pmid 5845849 issue 11 1.1.1 enzyme stub Category EC 1.1.1 Category NADPH dependent enzymes Category NADH dependent enzymes Category Enzymes of known structure it D arabinosio 1 ... more details
enzyme Name L arabinokinase EC number 2.7.1.46 CAS number 37277 99 9 IUBMB EC number 2 7 1 46 GO code 0009702 image width caption In enzymology , a L arabinokinase EC number 2.7.1.46 is an enzyme that catalysis catalyzes the chemical reaction ATP L arabinose math rightleftharpoons math ADP beta L arabinose 1 phosphate Thus, the two substrate biochemistry substrates of this enzyme are adenosine triphosphate ATP and L arabinose , whereas its two product chemistry products are adenosine diphosphate ADP and beta L arabinose 1 phosphate . This enzyme belongs to the family of transferase s, specifically those transferring phosphorus containing groups phosphotransferase s with an alcohol group as acceptor. The systematic name of this enzyme class is ATP L arabinose 1 phosphotransferase . This enzyme is also called L arabinokinase phosphorylating . This enzyme participates in nucleotide sugars metabolism . References reflist 1 cite journal author Neufeld EF, Feingold DS and Hassid WZ date 1960 title Phosphorylation of D galactose and L arabinose by extracts from Phaseolus aureus seedlings journal J. Biol. Chem. volume 235 pages 906&ndash 909 pmid 14426659 enzyme stub Category EC 2.7.1 Category Enzymes of unknown structure ... more details
AraC may refer to The araC gene and araC protein, components of the L arabinose operon in the genome of the bacterium Escherichia coli Cytarabine , a chemotherapy chemotherapeutic agent commonly used in the treatment of leukemia s and lymphoma s disambig ... more details
enzyme Name D arabinokinase EC number 2.7.1.54 CAS number 37278 02 7 IUBMB EC number 2 7 1 54 GO code 0047814 image width caption In enzymology , a D arabinokinase EC number 2.7.1.54 is an enzyme that catalysis catalyzes the chemical reaction ATP D arabinose math rightleftharpoons math ADP D arabinose 5 phosphate Thus, the two substrate biochemistry substrates of this enzyme are adenosine triphosphate ATP and D arabinose , whereas its two product chemistry products are adenosine diphosphate ADP and D arabinose 5 phosphate . This enzyme belongs to the family of transferase s, specifically those transferring phosphorus containing groups phosphotransferase s with an alcohol group as acceptor. The systematic name of this enzyme class is ATP D arabinose 5 phosphotransferase . This enzyme is also called D arabinokinase phosphorylating . References reflist 1 cite journal author Volk WA year 1962 title Purification and properties of D arabinokinase from Propionibacterium pentosaceum journal J. Biol. Chem. volume 237 pages 19&ndash 23 pmid 13926593 Category EC 2.7.1 Category Enzymes of unknown structure enzyme stub ... more details
unreferenced date January 2011 In 1898, Otto Ruff published his work on the transformation of D Glucose to D Arabinose later called the Ruff degradation. In this reaction, D Glucose is converted to D Arabinose . In this reaction, primarily terminal aldehyde group is converted to Carboxylic acid carboxylic group, using selective oxidizing of aldehyde group using Bromine Organic chemistry Bromine water and then converted to gluconate ion. After it, Fe OAc sub 3 sub with 30 of H sub 2 sub O sub 2 sub is added. br br Thus COO ion will form CO2 and Stereo Selective compound will form. And below CH2OH will convert to CHO group, thus forming D Arabinose. <No Image> Chemistry stub Category Name reactions de Ruff Abbau zh ... more details
Multiple issues orphan February 2009 context October 2009 unreferenced May 2007 lowercase araB The araB gene Promoter biology promoter is a bacterial promoter, activated by e L arabinose binding. DEFAULTSORT Arab Category Genetics genetics stub ... more details
enzyme Name indolylacetylinositol arabinosyltransferase EC number 2.4.2.34 CAS number 84720 96 7 IUBMB EC number 2 4 2 34 GO code 0050409 image width caption In enzymology , an indolylacetylinositol arabinosyltransferase EC number 2.4.2.34 is an enzyme that catalysis catalyzes the chemical reaction UDP L arabinose indol 3 yl acetyl 1D myo inositol math rightleftharpoons math UDP indol 3 yl acetyl myo inositol 3 L arabinoside Thus, the two substrate biochemistry substrates of this enzyme are UDP L arabinose and indol 3 ylacetyl 1D myo inositol , whereas its two product chemistry products are uridine diphosphate UDP and indol 3 yl acetyl myo inositol 3 L arabinoside . This enzyme belongs to the family of glycosyltransferase s, specifically the pentosyltransferases. The systematic name of this enzyme class is UDP L arabinose indol 3 yl acetyl myo inositol L arabinosyltransferase . Other names in common use include arabinosylindolylacetylinositol synthase , UDP L arabinose indol 3 ylacetyl myo inositol , and L arabinosyltransferase . References reflist 1 cite journal author Corcuera LJ and Bandurski RS date 1982 title Biosynthesis of indol 3 yl acetyl myo inositol arabinoside in kernels of Zea mays L journal Plant Physiol. volume 70 pages 1664&ndash 1666 doi 10.1104 pp.70.6.1664 issue 6 enzyme stub Glycosyltransferases Category EC 2.4.2 Category Enzymes of unknown structure ... more details
enzyme Name arabinose 5 phosphate isomerase EC number 5.3.1.13 CAS number 9023 86 3 IUBMB EC number 5 3 1 13 GO code 0019146 image width caption In enzymology , an arabinose 5 phosphate isomerase EC number 5.3.1.13 is an enzyme that catalysis catalyzes the chemical reaction D arabinose 5 phosphate math rightleftharpoons math D ribulose 5 phosphate Hence, this enzyme has one substrate biochemistry substrate , D arabinose 5 phosphate , and one product chemistry product , D ribulose 5 phosphate . This enzyme belongs to the family of isomerase s, specifically those intramolecular oxidoreductases interconverting aldoses and ketoses. The systematic name of this enzyme class is D arabinose 5 phosphate aldose ketose isomerase . Other names in common use include arabinose phosphate isomerase , phosphoarabinoisomerase , and D arabinose 5 phosphate ketol isomerase . References reflist 1 cite journal author Volk WA date 1960 title Purification and properties of phosphoarabinoisomerase from Propionibacterium pentosaceum journal J. Biol. Chem. volume 235 pages 1550&ndash 1553 isomerase stub Category EC 5.3.1 Category Enzymes of unknown structure ... more details
enzyme Name UDP galacturonate decarboxylase EC number 4.1.1.67 CAS number 9054 79 9 IUBMB EC number 4 1 1 67 GO code 0050374 image width caption In enzymology , an UDP galacturonate decarboxylase EC number 4.1.1.67 is an enzyme that catalysis catalyzes the chemical reaction UDP D galacturonate math rightleftharpoons math UDP L arabinose CO sub 2 sub Hence, this enzyme has one substrate biochemistry substrate , UDP D galacturonate , and two product chemistry products , UDP L arabinose and carbon dioxide CO sub 2 sub . This enzyme belongs to the family of lyase s, specifically the carboxy lyases, which cleave carbon carbon bonds. The systematic name of this enzyme class is UDP D galacturonate carboxy lyase UDP L arabinose forming . Other names in common use include UDP galacturonic acid decarboxylase , UDPGalUA carboxy lyase , and UDP D galacturonate carboxy lyase . This enzyme participates in nucleotide sugars metabolism . References reflist 1 cite journal author Fan D F and Feingold DS date 1972 title UDPgalacturonic acid decarboxylase from Ampullariella digitata journal Methods Enzymol. volume 28B pages 438&ndash 439 4.1 enzyme stub Category EC 4.1.1 Category Enzymes of unknown structure ... more details
Infobox protein family Symbol Arabinose trans Name Arabinosyltransferase image width caption crystal structure of an extracellular domain of arabinofuranosyltransferase from corynebacterium diphtheriae Pfam PF04602 Pfam clan CL0111 InterPro IPR007680 SMART PROSITE MEROPS SCOP TCDB OPM family OPM protein CAZy GT53 CDD File Arabinose.png thumb Arabinose In molecular biology, an arabinosyltransferase is a transferase enzyme acting upon arabinose . This enzyme is involved in polymerisation of arabinogalactan an essential component of the mycobacterial cell wall . This enzyme has important clinical applications as it is believed to be the target of the antimycobacterial drug Ethambutol. ref name pmid8876238 cite journal author Belanger AE, Besra GS, Ford ME, Mikusova K, Belisle JT, Brennan PJ, Inamine JM title The embAB genes of Mycobacterium avium encode an arabinosyl transferase involved in cell wall arabinan biosynthesis that is the target for the antimycobacterial drug ethambutol journal Proc. Natl. Acad. Sci. U.S.A. volume 93 issue 21 pages 11919 24 year 1996 month October pmid 8876238 pmc 38159 doi 10.1073 pnas.93.21.11919 url ref References reflist Glycosyltransferases InterPro content IPR007680 Category Protein families Category Transferases ... more details
DISPLAYTITLE C sub 5 sub H sub 10 sub O sub 5 sub The molecular formula C sub 5 sub H sub 10 sub O sub 5 sub molar mass 150.13 g mol, exact mass 150.052823 may refer to Apiose Aldopentose s Arabinose Lyxose Ribose Xylose Ketopentose s Ribulose Xylulose MolFormDisambig fr C5H10O5 it C5H10O5 ... more details
enzyme Name 3 deoxy D manno octulosonate aldolase EC number 4.1.2.23 CAS number 9026 95 3 IUBMB EC number 4 1 2 23 GO code 0047439 image width caption In enzymology , a 3 deoxy D manno octulosonate aldolase EC number 4.1.2.23 is an enzyme that catalysis catalyzes the chemical reaction 3 deoxy D manno octulosonate math rightleftharpoons math pyruvate D arabinose Hence, this enzyme has one substrate biochemistry substrate , 3 deoxy D manno octulosonate , and two product chemistry products , pyruvate and D arabinose . This enzyme belongs to the family of lyase s, specifically the aldehyde lyases, which cleave carbon carbon bonds. The systematic name of this enzyme class is 3 deoxy D manno octulosonate D arabinose lyase pyruvate forming . Other names in common use include 2 keto 3 deoxyoctonate aldolase , KDOaldolase , 3 deoxyoctulosonic aldolase , 2 keto 3 deoxyoctonic aldolase , 3 deoxy D manno octulosonic aldolase , and 3 deoxy D manno octulosonate D arabinose lyase . References reflist 1 cite journal author Ghalambor MA, Heath EC date 1966 title The biosynthesis of cell wall lipopolysaccharide in Escherichia coli. V. Purification and properties of 3 deoxy D manno octulosonate aldolase journal J. Biol. Chem. volume 241 pages 3222&ndash 7 pmid 5912115 issue 13 4.1 enzyme stub Category EC 4.1.2 Category Enzymes of unknown structure ... more details
enzyme Name beta L arabinosidase EC number 3.2.1.88 CAS number 39361 63 2 IUBMB EC number 3 2 1 88 GO code 0047701 image width caption Orphan date February 2009 In enzymology , a beta L arabinosidase EC number 3.2.1.88 is an enzyme that catalysis catalyzes the chemical reaction a beta L arabinoside H sub 2 sub O math rightleftharpoons math L arabinose an alcohol Thus, the two substrate biochemistry substrates of this enzyme are beta L arabinoside and water H sub 2 sub O , whereas its two product chemistry products are L arabinose and alcohol . This enzyme belongs to the family of hydrolase s, specifically those glycosidases that hydrolyse O and S glycosyl compounds. The systematic name of this enzyme class is beta L arabinoside arabinohydrolase . This enzyme is also called vicianosidase . References reflist 1 cite journal author Dey PM date 1973 title Beta L arabinosidase from Cajanus indicus a new enzyme journal Biochim. Biophys. Acta. volume 302 pages 393&ndash 8 pmid 4699248 issue 2 hydrolase stub Category EC 3.2.1 Category Enzymes of unknown structure ... more details
lowercase multiple image align right footer Left pGLO under ambient light br Right pGLO visualized under ultraviolet light image1 PLGO under ambient light.jpg width1 180 image2 PGlo UltraViolet.jpg width2 186 The pGLO plasmid is an engineered plasmid used in biotechnology as a vector for creating genetically modified organism s. The plasmid contains several reporter gene s, most notably for the green fluorescent protein GFP and the ampicillin resistance gene. GFP was isolated from the jelly fish Aequorea victoria . Because it shares a bidirectional promoter biology promoter with a gene for metabolizing arabinose , the GFP gene is expressed in the presence of arabinose , which makes the transgenic organism fluoresce under UV light . GFP can be induced in bacteria containing the pGLO plasmid by growing them on arabinose plates. pGLO is made up of three genes that are joined together using recombinant DNA technology. They are as follows br Bla, which codes for the enzyme beta lactamase giving the transformed bacteria resistance to the beta lactam family of antibiotics such as of the penicillin family br araC, a promoter region that regulates the expression of GFP specifically, the GFP gene will be expressed only in the presence of arabinose br GFP, the green fluorescent protein br br Like most other circular plasmids , the pGLO plasmid contains an origin ori , which is a region of the plasmid where replication will originate. The pGLO plasmid was made famous by researchers in France who used it to produce a green fluorescent rabbit named Alba rabbit Alba . Other features on pGLO, like most other plasmids, include a selectable marker, Ori origin of replication , and an MCS multiple cloning site located at the end of the GFP gene. The plasmid is 5371 base pair s long. In DNA supercoil supercoiled form, it runs on an agarose gel in the 4200 4500 range. ref Biorad pGlo Biotechnology http www.bio rad.be cmc upload Technology Spotlights 195388 Bio RadpGLOSDS PAGEextensionRev ... more details
Information Description Substitution sequence of arabinoxylan molecule substitution or branching pattern of arabinose residues blue pentagons on the xylose red hexagons chain is represented by a sequence of numbers indicating the number of branches 0 no branch, 1 one branch and 2 two branches . The chain may contain thousands of xylose units, only five xylose units are shown here. Note that the information on the type of substitution 2 substituted red and 3 substituted green is not present in the substitution sequence. Source I RaoInWiki created this work entirely by myself. Date 04 02 2010 Author RaoInWiki other versions NIL Licensing PD self date February 2010 Copy to Wikimedia Commons bot Fbot priority true ... more details
The Weerman degradation is an organic reaction in carbohydrate chemistry in which an aldonamide derived from an aldonic acid is degraded by sodium hypochlorite , forming a new sugar with one less carbon. The reaction is named after R.A. Weerman ref R. A. Weerman, Rec. Trav. Chim., 37, 16 1917 . ref The reaction mechanism is that of the related Hofmann degradation . One study demonstrated the direct oxidation of glucose to arabinose by the same sodium hypochlorite, skipping the aldonic acid and aldoamide steps. ref cite doi 10.1021 ja01528a042 ref References Reflist See also Curtius rearrangement Hofmann degradation Ruff Fenton degradation Wohl degradation Category Rearrangement reactions Category Carbohydrates Category Degradation reactions Category Name reactions zh Weerman ... more details
Expert subject date March 2010 Arabinogalactan protein is a type of protein found in plant cell walls. It is heavily glycosylation glycosylated , with only 2 10 protein. It is acidic and contains hydroxyproline , serine , alanine and glycine amino acids predominantly. The carbohydrate chains contain galactose , arabinose , rhamnose , mannose , galacturonic acid and or glucuronic acids and have a relatively high degree of polymerization, with a structure similar to arabinogalactan II . ref McNeil M, Darvill AG, Fry SC, Albersheim P. 1984 Structure and function of primary cell walls of plants. Anna Rev Biochem 53 625 663 ref They are involved in cell cell interactions and plant defence. References Reflist External links http www.plantbio.ohiou.edu epb faculty research showalter 20lab nShowalter 202001 20AGPs.pdf DEFAULTSORT Arabinogalactan Protein Category Proteins ... more details
The Wohl degradation in carbohydrate chemistry is a chain contraction method for aldose s. ref citation last Wohl first A. authorlink Alfred Wohl title Abbau des Traubenzuckers journal Chem. Ber. year 1893 volume 26 issue 1 pages 730 744 doi 10.1002 cber.189302601150 . ref The classic example is the conversion of glucose to arabinose as shown below. The reaction is named after the chemist Alfred Wohl . Image WohlDegradation.png center 600px The Wohl degradation In one modification, ref OrgSynth first G za last Braun title D Arabinose prep CV3P0101 volume 20 pages 14 year 1940 collvol 3 collvolpages 101 . ref ref OrgSynth first1 H. T. last1 Clarke first2 S. M. last2 Nagy title Pentaacetyl d gluconitrile prep CV3P0690 volume 20 pages 74 year 1940 collvol 3 collvolpages 690 . ref glucose d glucose is converted to the glucose oxime by reaction with hydroxylamine and sodium methoxide . In the second step the pentaacetyl glycononitrile is formed by reaction with acetic anhydride in acetic acid with sodium acetate . In this reaction step the oxime is converted into the nitrile with simultaneous conversion of all the alcohol groups to acetate groups. In the final step sodium methoxide in methanol is added on which the nitrile group is split off as sodium cyanide with formation of a new formyl group. Ruff Fenton degradation In a variation the Ruff Fenton degradation Otto Ruff 1898, O. Fenton 1893 converts the aldose first to the alpha hydroxy carboxylic acid with bromine and calcium hydroxide and then to the shortened aldose by reaction with Iron III sulfate and hydrogen peroxide ref Organic syntheses based on name reactions , Volume 22 Alfred Hassner,C. Stumer ref See also Nef reaction References Reflist Category Carbohydrate chemistry Category Elimination reactions Category Degradation reactions Category Name reactions es Degradaci n de Wohl zh ... more details
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