Pyruvatedecarboxylation also known as the Swanson Conversion ref http www.rpi.edu dept bcbp molbiochem MBWeb mb1 part2 krebs.htm ref , or oxidative decarboxylation reaction is the Autocatalytic reaction Far from equilibrium far from equilibrium biochemical reaction that uses pyruvate to form acetyl CoA , releasing NADH , a reducing equivalent, and carbon dioxide via decarboxylation . It is known as the link reaction because it forms an important link between the metabolic pathway s of glycolysis and the citric acid cycle . This reaction is usually catalyzed by the pyruvate dehydrogenase complex as part of aerobic respiration . ref Alberts et al. Molecular Biology of the Cell. Garland Science, 2001. ISBN 0 8153 4072 9 ref In eukaryotes , pyruvatedecarboxylation takes place exclusively inside the mitochondrial matrix in prokaryotes similar reactions take place in the cytoplasm and at the plasma membrane. ref Raven et al. Biology, 8th edition. McGraw Hill, 2008. ISBN 978 0 07 110202 5 ref cellspacing 15 width 25 style border 1px solid a79c83 Enzymatic Reaction foward enzyme pyruvate dehydrogenase complex PDHC reverse enzyme substrate pyruvate Pyr product acetyl CoA Ac CoA reaction direction .... The oxidative decarboxylation of pyruvate in anaerobic organisms differs from the aerobic ... sub via hydrogenase. p To summarise p 1. Pyruvate is decarboxylated p 2. It is added to Coenzyme A CoA to form Acetyl CoA p p Acetyl CoA is then ready for use in the Krebs Cycle . File Pyruvatedecarboxylation steps.png thumb none 600px Pyruvatedecarboxylation steps References references External links http www.rahulgladwin.com blog 2007 01 notes on pyruvate metabolism.html Notes on Pyruvatedecarboxylation ... of glycolysis which are cytosol ic. The conversion of pyruvate to acetyl CoA by the pyruvate ... of pyruvate to glucose, or as a transamination substrate. It commits pyruvate to entering the citric ... Crystal Structure of the Free Radical Intermediate of Pyruvate Ferredoxin Oxidoreductase Science 2001 ... more details
L DOPA to dopamine Other decarboxylation reactions from the citric acid cycle include pyruvate ...Image Decarboxylation reaction.png thumb upright 2 DecarboxylationDecarboxylation is a chemical reaction that releases carbon dioxide CO sub 2 sub . Usually, decarboxylation refers to a reaction of carboxylic acids , removing a carbon atom from a carbon chain. The reverse process, which is the first chemical step in photosynthesis, is called carbonation , the addition of CO sub 2 sub to a compound ... lyases Enzyme Commission number EC number 4.1.1 . In organic chemistry The term decarboxylation literally ... relates the state of the reactant and product. Decarboxylation is one of the oldest organic reactions ... to conditions. In retrosynthesis , decarboxylation reactions can be considered the opposite of homologation ... of metal carboxylate complexes. Decarboxylation of aryl carboxylates can generate the equivalent of the corresponding ... and their salts do not always undergo decarboxylation readily. ref JerryMarch ref ref http www.chem.ucalgary.ca courses 350 Carey5th Ch19 ch19 3 4.html, Decarboxylation, Dr. Ian A. Hunt, Department of Chemistry, University of Calgary ref Exceptions are the decarboxylation of beta keto acid s, ... Jim Clark year 2004 publisher Chemguide title The Decarboxylation of Carboxylic Acids and their Salts ... towards decarboxylation depends upon stability of carbanion intermediate formed in above mechanism. Many reactions have been named after early workers in organic chemistry. The Barton decarboxylation ... decarboxylation is a related decarboxylation of an ester. In ketonic decarboxylation a carboxylic ... term decarboxylation as defined above except that it specifically requires that the carboxyl group ... biosynthetic oxidative decarboxylation s of amino acid s to amine s are tryptophan to tryptamine phenylalanine ... stored for long periods, very small amounts of benzene may form from benzoic acid by decarboxylation ... ref The addition of catalytic amounts of cyclohexenone has been reported to catalyze the decarboxylation ... more details
Unreferenced date November 2006 Oxidative decarboxylation reactions are oxidation reactions in which a carboxylic acid carboxylate group is removed, forming carbon dioxide . They often occur in biological systems there are many examples in the citric acid cycle . The Citric Acid Cycle In this process, one pyruvic acid molecule is used to form one NADH and 2 Adenosine triphosphate ATP , catalysed catalyst by the pyruvate dehydrogenase complex enzyme . Pyruvic acid NAD coenzyme A water acetyl coenzyme A NADH hydrogen ion H sup sup carbon dioxide CO sub 2 sub Other Occurrences The transformation of glyoxylate to methanoic acid is also an oxidative decarboxylation. Citation needed reason nothing found on google about this reaction date January 2012 See also Decarboxylation Category Substitution reactions ca Descarboxilaci oxidativa es Descarboxilaci n oxidativa ... more details
The Adams decarboxylation is a chemical reaction that involved the decarboxylation of coumarin s which have carboxylic acid group in the third position. The decarboxylation is achieved by aqueous solution of sodium bisulfite , heat and a concentrated solution of sodium hydroxide . ref Adams, R. Mathieu, J. J. Amer. Chem. Soc. 1948 , 70 ,2120. ref ref Adams, R. Bockstaheler, T.E. J. Amer. Chem. Soc. 1952 , 74 ,5346. ref ref Cramer, F. Windel, H. Chem. Ber. 1956 , 89 ,354. ref File Adams decarboxylation.png center References Reflist Category Organic reactions ... more details
Ketonic decarboxylation also known as ketonization is a type of organic reaction and a decarboxylation converting two equivalents of a carboxylic acid to a symmetric ketone by the application of heat with expulsion of one equivalent of water and one equivalent of carbon dioxide . ref Renz, M. 2005 , Ketonization of Carboxylic Acids by Decarboxylation Mechanism and Scope. Eur. J. Org. Chem., 2005 979 988. doi 10.1002 ejoc.200400546 ref . base chemistry Bases promote this reaction. The reaction mechanism likely involves formation of an intermediate carbanion with decarboxylation from one acid group followed by nucleophilic attack on the other acid group as a concerted reaction . This reaction is different from oxidative decarboxylation with proceeds through a radical mechanism and is characterised by a different product distribution in isotopic labeling experiments with two different carboxylic acids. The dry distillation of calcium acetate to acetone was reported by Charles Friedel in 1858 ref Friedel, C. 1858 , Ueber s. g. gemischte Acetone. Justus Liebigs Ann. Chem., 108 122 125. doi 10.1002 jlac.18581080124 ref and until World War I ketonization was the premier commercial method for its production. ref IMPROVEMENT IN THE MANUFACTURE OF ACETONE.1 E. R. Squibb Journal of the American Chemical Society 1895 17 3 , 187 201 DOI 10.1021 ja02158a004 ref . With two different carboxylic acids the reaction behaves poorly because of poor selectivity except when one of the acids small, volatile is used in large excess. An example of intramolecular ketonization is the conversion of adipic acid to cyclopentanone with barium hydroxide . Of commercial importance is the production of 3 pentanone from propionic acid with catalysts Cerium IV oxide and Manganese dioxide on alumina. References Reflist Category organic reactions ... more details
The Barton decarboxylation is a radical reaction in which a carboxylic acid is first converted to a thiohydroxamate ester commonly referred to as a Barton ester . The product is then heated in the presence of a radical initiator and a suitable hydrogen donor to complete the reductive decarboxylation of the initial carboxylic acid. ref cite journal author1 Barton, D. H. R. authorlink1 Derek Harold Richard Barton author2 Crich, D. author3 Motherwell, W. B. title New and improved methods for the radical decarboxylation of acids journal J. Chem. Soc., Chem. Commun. year 1983 pages 939 doi 10.1039 C39830000939 issue 17 ref ref cite journal doi 10.1016 S0040 4039 01 99826 0 author1 Barton, D. H. R. authorlink1 Derek Harold Richard Barton author2 Crich, D. author3 Motherwell, W. B. title A practical alternative to the hunsdiecker reaction journal Tetrahedron Letters year 1983 volume 24 pages 4979 issue 45 ref Using this reaction it is possible to remove a carboxylic acid moiety from an alkyl group and replace it with other functional groups . ref cite journal author1 Barton, D. H. R. authorlink1 Derek Harold Richard Barton author2 Crich, D. author3 Motherwell, W. B. title The invention of new radical chain reactions. Part VIII. Radical chemistry of thiohydroxamic esters A new method for the generation of carbon radicals from carboxylic acids journal Tetrahedron Letters year 1985 volume ... decarboxylation and carbon dioxide CO sub 2 sub is lost. The remaining alkyl radical R then abstracts ..., J. title Reducing the Cost, Smell, and Toxicity of the Barton Reductive Decarboxylation ... 2 See also Barton McCombie deoxygenation Hunsdiecker reaction Kochi reaction Krapcho decarboxylation Kolbe electrolysis References Reflist External links Barton Decarboxylation at organic chemistry.org http www.organic chemistry.org namedreactions barton decarboxylation.shtm Barton Decarboxylation ... displayonr.asp?onr ONR021.htm DEFAULTSORT Barton Decarboxylation Category Organic reactions Category ... more details
The Krapcho decarboxylation is the chemical reaction of ester s with halide anion s. The ester must contain an electron withdrawing group in the beta position, such as ketoesters, malonic esters, cyanoesters, or sulfonylesters. It works best with methyl esters, since it is basically a S sub N sub 2 reaction at carbon. It is driven by the entropy of the overall reaction, as the byproducts chloromethane and carbon dioxide CO sub 2 sub are lost as gases. The reaction is a useful synthetic procedure to hydrolyze and decarboxylate Malonic ester synthesis malonic esters because it only cleaves one of the ester groups. The alternative way e.g. basic hydrolysis destroys both of the ester groups and a subsequent reaction is usually used to regenerate the alkylated ester. ref cite journal doi 10.1016 S0040 4039 00 60166 1 title Use of atom transfer radical cyclizations as an efficient entry into a new serotonergic azanoradamantane year 1992 last1 Flynn first1 D journal Tetrahedron Letters volume 33 issue 48 pages 7283 ref ref cite journal doi 10.1021 jo00395a032 title Synthetic applications and mechanism studies of the decarbalkoxylations of geminal diesters and related systems effected in dimethyl sulfoxide by water and or by water with added salts year 1978 last1 Krapcho first1 A. Paul last2 Weimaster first2 J. F. last3 Eldridge first3 J. M. last4 Jahngen first4 E. G. E. last5 Lovey first5 A. J. last6 Stephens first6 W. P. journal The Journal of Organic Chemistry volume 43 pages 138 ref ref cite journal doi 10.1016 S0040 4039 01 82414 X title Decarbalkoxylations of geminal diesters and keto esters in wet dimethyl sulfoxide. Effect of added sodium chloride on the decarbalkoxylation rates of mono and di substituted Malonate esters year 1974 last1 Krapcho first1 A journal Tetrahedron Letters volume 15 issue 13 pages 1091 ref ref cite journal doi 10.1016 S0040 4039 00 90519 7 title The decarbethoxylation of geminal dicarbethoxy compounds year 1967 last1 Krapcho first1 A journal ... more details
Reading, Engl. volume 147 issue Pt 6 pages 1483 98 year 2001 pmid 11390679 ref See also Pyruvatedecarboxylation ...About the enzyme that preceeds the citric acid cycle the enzyme that forms acetaldehyde pyruvate decarboxylase ... image PDwhole1.jpg width caption Crystallographic structure of pyruvate dehydrogenase PDH . PH is a six ... for flip flop action of thiamin pyrophosphate dependent enzymes revealed by human pyruvate dehydrogenase ... pmid 15264254 doi 10.1002 jcc.20084 url ref Pyruvate dehydrogenase E1 is the first component enzyme of pyruvate dehydrogenase complex PDC . The pyruvate dehydrogenase complex contributes to transforming pyruvate into acetyl CoA by a process called pyruvatedecarboxylation . Acetyl CoA may then be used in the citric acid cycle to carry out cellular respiration , so pyruvate dehydrogenase contributes ... adenine dinucleotide NADH . EC number 1.2.4.1 . Function Pyruvate dehydrogenase E1 performs the first two reactions within the pyruvate dehydrogenase complex PDC a decarboxylation of substrate 1 pyruvate and a reductive acetylation of substrate 2 lipoic acid . Lipoic acid is covalently bound .... The reaction catalyzed by pyruvate dehydrogenase E1 is considered to be the rate limiting step for the pyruvate dehydrogenase complex PDHc . Regulation Phosphorylation of E1 by pyruvate dehydrogenase kinase PDK inactivates E1 and subsequently the entire complex. This is reversed by pyruvate dehydrogenase phosphatase . Pyruvate dehydrogenase phosphatase is stimulated by insulin , Phosphoenolpyruvate ... , NADH , and Acetyl CoA . Image 1400x1048 pdh regulation.png 400 px center alt Regulation of Pyruvate Dehydrogenase Mechanism File PyruvateDehydrgenaseMech1.gif Pyruvate Dehydrogenase Mechanism The ylide resonance form of thiamine pyrophosphate TPP begins by attacking the electrophilic ketone of pyruvate. The intermediate alkoxide then decarboxylation decarboxylates and the resulting enol is deprotonated ... C2 carbanion, eventually. After the cofactor TPP decarboxylates pyruvate, the acetyl ... more details
DHG title Pyruvate Decarboxylase A Molecular Modeling Study of PyruvateDecarboxylation and Acyloin ..., which is held by the enzyme pyruvate decarboxylase. During the decarboxylation of pyruvate, the TPP ... thumb Mechanism of pyruvatedecarboxylation References Reflist 2 External links MeshName Pyruvate ...About the enzyme that forms acetaldehyde the enzyme that feeds the citric acid cycle pyruvate dehydrogenase enzyme Name Pyruvate decarboxylase EC number 4.1.1.1 CAS number 9001 04 1 IUBMB EC number 4 1 1 1 GO code 0004737 image Pyruvate decarb 1.jpg width caption Reaction catalyzed by pyruvate decarboxylase br pyruvate thiamine pyrophasphate TPP hydroxyethyl TPP CO sub 2 sub Pyruvate decarboxylase is a tetrameric protein homotetrameric enzyme EC number 4.1.1.1 that catalysis catalyses the decarboxylation .... Pyruvate decarboxylase starts this process by converting pyruvate into acetaldehyde and carbon ... ref Pyruvate decarboxylase depends on Cofactor biochemistry cofactors thiamine pyrophosphate TPP and magnesium. This enzyme should not be mistaken for the unrelated enzyme pyruvate dehydrogenase , an oxidoreductase EC number 1.2.4.1 , that catalyzes the oxidative decarboxylation of pyruvate to acetyl CoA . Yeast In yeast, pyruvate decarboxylase acts independently during wikt anaerobic anaerobic fermentation and releases the 2 carbon fragment as acetaldehyde plus carbon dioxide. Pyruvate decarboxylase ... F title Catalytic centers in the thiamin diphosphate dependent enzyme pyruvate decarboxylase at 2.4 ... doi 10.1021 bi00075a008 url issn ref The enzyme is necessary to help the decarboxylation of alpha ... keto acid pyruvate to meet. ref name pmid8512926 Structure Pyruvate decarboxylase occurs as a dimer ... B, Jordan F title Catalytic centers in the thiamin diphosphate dependent enzyme pyruvate decarboxylase ... 8512926 doi 10.1021 bi00075a008 url issn ref Gallery title Crystallographic structures of pyruvate decarboxylase width 275 lines 3 Image 1pvd with TPP.jpg Cartoon diagram of pyruvate decarboxylase ... more details
Image pkb.jpg thumb right 250px Typical Pyruvate Kinase Structure, small X ray Crystallography Derived small Pyruvate kinase List of EC numbers EC 2 EC 2.7.1 Phosphotransferases with an Alcohol Group as Acceptor ... of pyruvate and one molecule of adenosine triphosphate ATP . Reaction The pyruvate kinase reaction Image Pyruvate kinase.png left thumb This process also requires a magnesium ion. The enzyme is a transferase ... pathway, which produces pyruvate molecules, the final product of aerobic glycolysis. However, in anaerobic ... dehydrogenase to reduce pyruvate to lactate. In humans, there are two pyruvate kinase isozymes type ... activity of the pathway, and are, in general, irreversible under wild type conditions . Pyruvate ... Citation&list uids 22182754 doi 10.1016 j.abb.2011.11.020 ref Liver pyruvate kinase is also regulated ... liver pyruvate kinase to deactivate it. Muscle pyruvate kinase is not inhibited by epinephrine ... of pyruvate kinase. These controls prevent pyruvate kinase from being active at the same time as the enzymes that catalyze the reverse reaction pyruvate carboxylase and phosphoenolpyruvate ... of this enzyme cause the disease known as pyruvate kinase deficiency . In this condition, a lack of pyruvate kinase slows down the process of glycolysis. This effect is especially devastating in cells ... cells , which in a state of pyruvate kinase deficiency rapidly become deficient in ATP and can undergo hemolysis . Therefore, pyruvate kinase deficiency can cause hemolytic anemia . Role in gluconeogenesis Pyruvate kinase also serves as a regulatory enzyme for gluconeogenesis , a biochemical pathway in which the liver generates glucose from pyruvate and other substrates. When pyruvate kinase ... is prevented from being converted to pyruvate. Instead, it is converted to glucose in a series of gluconeogenesis .... Alternatives A reversible enzyme with a similar function, Pyruvate phosphate dikinase PPDK , is found ... or more occasions. In some cases, the same organism will have both Pyruvate kinase and PPDK. ref ... more details
enzyme Name pyruvate synthase EC number 1.2.7.1 CAS number 9082 51 3 IUBMB EC number 1 2 7 1 GO code 0019164 image width caption In enzymology , a pyruvate synthase EC number 1.2.7.1 is an enzyme that catalysis catalyzes the chemical reaction pyruvate CoA 2 oxidized ferredoxin math rightleftharpoons math acetyl CoA CO sub 2 sub 2 reduced ferredoxin 2 H sup sup The 3 substrate biochemistry substrates of this enzyme are pyruvate , coenzyme A CoA , and oxidized ferredoxin , whereas its 4 product chemistry products are acetyl CoA , carbon dioxide CO sub 2 sub , reduced ferredoxin, and hydrogen ion H sup sup . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the aldehyde or oxo group of donor with an iron sulfur protein as acceptor. The systematic name of this enzyme class is pyruvate ferredoxin 2 oxidoreductase CoA acetylating . Other names in common use include pyruvate oxidoreductase , pyruvate synthetase , pyruvate ferredoxin oxidoreductase , and pyruvic ferredoxin oxidoreductase . This enzyme participates in 4 metabolism metabolic pathways pyruvate metabolism , propanoate metabolism , butanoate metabolism , and reductive carboxylate cycle CO2 fixation . Structural studies As of late 2007, 10 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1B0P , PDB link 1KEK , PDB link 2C3M , PDB link 2C3O , PDB link 2C3P , PDB link 2C3U , PDB link 2C3Y , PDB link 2C42 , PDB link 2PDA , and PDB link 2RAA . References reflist 1 cite journal author Evans MC, Buchanan BB date 1965 title Photoreduction of ferredoxin and its use in carbon dioxide fixation by a subcellular system from ..., Rabinowitz JC date 1971 title Pyruvate ferredoxin oxidoreductase. 3. Purification and properties of the enzyme ... author Uyeda K, Rabinowitz JC date 1971 title Pyruvate ferredoxin oxidoreductase. IV. Studies on the reaction ... and electron transfer mechanism of pyruvate ferredoxin oxidoreductase journal Curr. Opin. Struct ... more details
enzyme Name pyruvate oxidase EC number 1.2.3.3 CAS number 9001 96 1 IUBMB EC number 1 2 3 3 GO code 0047112 image width caption In enzymology , a pyruvate oxidase EC number 1.2.3.3 is an enzyme that catalysis catalyzes the chemical reaction pyruvate phosphate O sub 2 sub math rightleftharpoons math acetyl phosphate CO sub 2 sub H sub 2 sub O sub 2 sub The 3 substrate biochemistry substrates of this enzyme are pyruvate , phosphate , and oxygen O sub 2 sub , whereas its 3 product chemistry products are acetyl phosphate , carbon dioxide CO sub 2 sub , and hydrogen peroxide H sub 2 sub O sub 2 sub . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the aldehyde or oxo group of donor with oxygen as acceptor. The systematic name of this enzyme class is pyruvate oxygen 2 oxidoreductase phosphorylating . Other names in common use include pyruvic oxidase , and phosphate dependent pyruvate oxidase . This enzyme participates in pyruvate metabolism . It has 2 cofactor biochemistry cofactors FAD , and Thiamin diphosphate . Structural studies As of late 2007, 12 tertiary structure structures have been solved for this class of enzymes, with Protein Data Bank PDB accession codes PDB link 1POW , PDB link 1POX , PDB link 1V5E , PDB link 1V5F , PDB link 1V5G , PDB link 1Y9D , PDB link 2DJI , PDB link 2EZ4 , PDB link 2EZ8 , PDB link 2EZ9 , PDB link 2EZT , and PDB link 2EZU . References reflist 1 cite journal author Williams FR, Hager LP date 1966 title Crystalline flavin pyruvate oxidase from Escherichia coli. I Isolation and properties of the flavoprotein journal Arch. Biochem. Biophys. volume 116 pages 168&ndash 76 pmid 5336022 doi 10.1016 0003 9861 66 90025 7 issue 1 cite journal author Tittmann K, Wille G, Golbik R, Weidner A, Ghisla S, Hubner G date 2005 title Radical phosphate transfer mechanism for the thiamin diphosphate and FAD dependent pyruvate oxidase from Lactobacillus plantarum Kinetic coupling of intercofactor electron transfer with phosphate ... more details
enzyme Name Pyruvate carboxylase EC number 6.4.1.1 CAS number 9014 19 1 IUBMB EC number 6 4 1 1 GO code 0004736 image Pyruvate Carboxylase fromPDB 2QF7.png width caption X ray crystallography Biological macromolecular crystallography Crystallographic structure of pyruvate carboxylase from Rhizobium Rhizobium ... of pyruvate carboxylase journal Biochem. J. volume 413 issue 3 pages 369 87 year 2008 month August pmid 18613815 pmc 2859305 doi 10.1042 BJ20080709 url issn ref Pfam box Symbol PYR CT Name Pyruvate ... PDB2 1rqe PDB2 1s3h PDB2 1sr9 PDB2 1u5j Protein Name Pyruvate carboxylase image caption Symbol PC ... 608786 EntrezGene 5091 RefSeq NM 000920 UniProt P11498 PDB Pyruvate carboxylase PC is an enzyme of the ligase class that catalyzes the depending on the species irreversible carboxylation of pyruvate ... oxaloacetate from pyruvate. The enzyme is a mitochondrial protein containing a biotin prosthetic ... . ref name pmid18613815 Pyruvate carboxylase was first discovered in 1959 at Western Reserve University ... Formation of oxaloacetate from pyruvate and carbon dioxide journal J. Biol. Chem. volume 235 issue ... appearance of pyruvate carboxylase from chicken liver journal J. Biol. Chem. volume 254 issue 5 pages ... Puig A, Wallace JC title Anaplerotic roles of pyruvate carboxylase in mammalian tissues journal Cell ... Y, Wallace JC title Molecular cloning and domain structure of chicken pyruvate carboxylase journal Biochem ... spliced pyruvate carboxylase mRNAs with divergent 5 untranslated regions which are expressed in a tissue ... subunit of pyruvate carboxylase from Aquifex aeolicus at 2.2 A resolution journal Acta Crystallogr ... G, Gil D, Valle M, Tong L title A symmetrical tetramer for S. aureus pyruvate carboxylase in complex ..., Rayment I title Domain architecture of pyruvate carboxylase, a biotin dependent multifunctional enzyme ... gallery title Pyruvate Carboxylase Symmetry Comparison width 200 height 150 lines 2 Pyruvate Carboxylase 2QF7, sswilson7.png Rhizobium Rhizobium etli Rhizobium Rhizobium etli Pyruvate carboxylase 3HO8 ... more details
chembox verifiedrevid 464403469 Name Sodium pyruvate ImageFile Sodium pyruvate.png ImageFileL1 Pyruvate 3D balls.png ImageSizeL1 160px ImageNameL1 Ball and stick model of the pyruvate anion ImageFileR1 Sodium 3D.png ImageSizeR1 80px ImageNameR1 The sodium cation OtherNames ketopropionic acid sodium salt 2 oxopropanoic acid sodium salt Pyruvic acid sodium salt Section1 Chembox Identifiers ChemSpiderID Ref chemspidercite correct chemspider ChemSpiderID 7931 ChEMBL Ref ebicite correct EBI ChEMBL 181886 PubChem 23662274 UNII Ref fdacite correct FDA UNII POD38AIF08 InChI 1 C3H4O3.Na c1 2 4 3 5 6 h1H3, H,5,6 q 1 p 1 InChIKey DAEPDZWVDSPTHF REWHXWOFAL ChEBI Ref ebicite correct EBI ChEBI 50144 SMILES Na . O C O C O C StdInChI Ref stdinchicite correct chemspider StdInChI 1S C3H4O3.Na c1 2 4 3 5 6 h1H3, H,5,6 q 1 p 1 StdInChIKey Ref stdinchicite correct chemspider StdInChIKey DAEPDZWVDSPTHF UHFFFAOYSA M CASNo Ref cascite correct CAS CASNo 113 24 6 Section2 Chembox Properties Formula C sub 3 sub H sub 3 sub NaO sub 3 sub MolarMass 110.044 g mol Density Solvent other solvents SolubleOther 100 mg mL MeltingPt BoilingPt Sodium pyruvate is commonly added to cell culture media as an additional source of energy, but may also have protective effects against hydrogen peroxide . This was reported by Giandomenico et al. . ref cite journal author Giandomenico AR, Cerniglia GE, Biaglow JE, Stevens CW, Koch CJ title The importance of sodium pyruvate in assessing damage produced by hydrogen peroxide. journal Free Radic Biol Med volume 23 issue 3 pages 426 34 year 1997 pmid 9214579 doi 10.1016 S0891 5849 97 00113 5 url ref and has been confirmed by several independent groups. References reflist Category Sodium compounds biochem stub ar fa ... more details
The pyruvate scale measures pungency in onions and garlic with units of Mole unit mol g sub fw sub micromoles per gram fresh weight . ref cite web title Spring 2001 Commercial Vegetable Variety Trials url http www.aaes.auburn.edu comm pubs vegetables spring2001.pdf accessdate 2011 06 21 ref It is named after pyruvic acid , the alpha keto acid co product created in the biochemical pathway that forms the lacrimator, syn Propanethial S oxide . The standard onion has an eight rating, while sweet onions have a two or three rating on the scale. The lower the score or scale the more sweet the onions are rated. Anything less than five is considered a sweet onion. The Vidalia onion variety is considered sweet and must have a score of 5.0 mol g sub fw sub or less. Citation needed date February 2007 The Supasweet onion usually grown in Lincolnshire , England registers 1.5 to 2 on the scale. A standard brown onion is usually in the range of 6 7 out of 10. Soil type, rain, and sunlight affect the pungency in onions and garlic and, therefore, their score on the pyruvate scale. References Reflist External links http www.ams.usda.gov nop indexNet.htm The National Organic Program &mdash by the USDA Failed verification date January 2011 Category Scales Agri stub ... more details
Pyruvate cycling commonly refers to an intracellular loop of spatial movements and chemical transformations involving pyruvate . Spatial movements occur between Mitochondrion mitochondria and cytosol and chemical transformations create various Krebs cycle intermediates. In all variants, pyruvate is imported into the mitochnodrion for processing through part of the Krebb s cycle. In addition to pyruvate ... to the cytosol for additional transformations and then re imported. Three specific pyruvate cycles ... A pyruvate cycling pathway involving cytosolic NADP dependent isocitrate dehydrogenase regulates ... may exist, such as dissipative or futile pyruvate cycles ref cite journal author Gregory RB, Berry ... of pyruvate cycling to loss of 6 3Hglucose during conversion of glucose to glycogen in hepatocytes effects ... citrate lyase, malic enzyme, and pyruvate citrate cycling in glucose induced insulin secretion journal ... PJ title Role for malic enzyme, pyruvate carboxylation, and mitochondrial malate import in glucose ... url pmc 2692397 ref .It has been observed in various cell types including islet cells. The pyruvate ... Scaduto RC, Davis EJ title The involvement of pyruvate cycling in the metabolism of aspartate and glycerate ... year 1986 month August pmid 3800911 pmc 1147046 doi url ref . section stubs pyruvate malate pyruvate citrate pyruvate isocitrate References reflist Further reading cite journal author Kley S, Hoenig M ... Islets Results in Elevated U 13CGlucose Metabolism, Glutaminolysis, and Pyruvate Cycling but a Decreased ... U, Rosengren AH, Schuit FC, Renstr m E, Mulder H title Anaplerosis via pyruvate carboxylase is required ... url cite journal author Jensen MV, Joseph JW, Ilkayeva O, et al. title Compensatory responses to pyruvate ... analysis reveals a connection between pyruvate cycling and glucose stimulated insulin secretion ... author Thompson SN title Pyruvate cycling and implications for regulation of gluconeogenesis ... P cite journal author Rognstad R title Pyruvate cycling involving possible oxaloacetate decarboxylase ... more details
Pyruvate dehydrogenase complex PDC is a complex of three enzyme s that transform pyruvate into acetyl CoA by a process called pyruvatedecarboxylation . Acetyl CoA may then be used in the citric acid cycle ... acid cycle . Pyruvatedecarboxylation is also known as the pyruvate dehydrogenase reaction because it also involves the oxidation of pyruvate. This multi enzyme complex is related structurally ... . Localization of pyruvatedecarboxylation In eukaryote eukaryotic cells the Pyruvatedecarboxylation ... because it carries a negative charge. On entry to the mitochondria the pyruvatedecarboxylation ... by pyruvate dehydrogenase complex is Enzymatic Reaction foward enzyme pyruvate dehydrogenase complex reverse enzyme substrate pyruvate product acetyl CoA reaction direction foward reversible reverse ... NADH H sup sup minor reverse substrate s minor reverse product s substrate image pyruvate wpmp.png product image acetyl co A wpmp.png Structure & function in eukaryotes Pyruvate dehydrogenase complex ..., W.G. 1992 Atomic structure of the cubic core of the pyruvate dehydrogenase multienzyme complex. Science 255, 1544 1550. ref Pyruvate dehydrogenase complex is located in the mitochondrial matrix of eukaryotes ... pyruvate dehydrogenase complex. J. Biol. Chem. 281, 19772 19780. ref class wikitable Enzyme Abbrev. cofactor biochemistry Cofactor s subunits prokaryotes subunits eukaryotes pyruvate dehydrogenase ... thumb 500px PDC Mechanism with pyruvate R H Pyruvate dehydrogenase E1 Initially, pyruvate and thiamine thiamine pyrophosphate TPP or thiamine vitamin B sub 1 sub are bound by pyruvate dehydrogenase ... performs a nucleophilic attack on the C2 ketone carbonyl of pyruvate. The resulting hemithioacetal undergoes decarboxylation to produce an acyl anion equivalent see cyanohydrin or aldehyde dithiane ... process is the rate limiting step of the whole pyruvate dehydrogenase complex. Dihydrolipoyl ... FADH sub 2 sub back to its FAD resting state, producing NADH. Regulation Pyruvate dehydrogenase ... more details
enzyme Name pyruvate kinase phosphatase EC number 3.1.3.49 CAS number 79986 25 7 IUBMB EC number 3 1 3 49 GO code 0050408 image width caption In enzymology , a pyruvate kinase phosphatase EC number 3.1.3.49 is an enzyme that catalysis catalyzes the chemical reaction pyruvate kinase phosphate H sub 2 sub O math rightleftharpoons math pyruvate kinase phosphate Thus, the two substrate biochemistry substrates of this enzyme are pyruvate kinase phosphate and water H sub 2 sub O , whereas its two product chemistry products are pyruvate kinase and phosphate . This enzyme belongs to the family of hydrolase s, specifically those acting on phosphoric ester monoester bonds. The systematic name of this enzyme class is ATP pyruvate 2 O phosphotransferase phosphate phosphohydrolase . This enzyme is also called pyruvate kinase phosphatase . References reflist 1 cite journal author Jett MF, Hue L, Hers HG date 1981 title Pyruvate kinase phosphatase journal FEBS. Lett. volume 132 pages 183&ndash 6 pmid 6271587 doi 10.1016 0014 5793 81 81156 8 issue 2 DEFAULTSORT Pyruvate Kinase Phosphatase Category EC 3.1.3 Category Enzymes of unknown structure hydrolase stub ... more details
enzyme Name pyruvate, phosphate dikinase EC number 2.7.9.1 CAS number 9027 40 1 IUBMB EC number 2 7 9 1 GO code 0050242 image width caption File PPDK reaction.svg thumb 350px Reaction of the pyruvate, phosphate dikinase the phosphorylation of pyruvate to phosphoenolpyruvate. In enzymology , a pyruvate, phosphate dikinase EC number 2.7.9.1 is an enzyme that catalysis catalyzes the chemical reaction ATP pyruvate phosphate math rightleftharpoons math AMP phosphoenolpyruvate diphosphate The 3 substrate biochemistry substrates of this enzyme are adenosine triphosphate ATP , pyruvate , and phosphate , whereas its 3 product chemistry products are adenosine monophosphate AMP , phosphoenolpyruvate PEP , and diphosphate . With that enzyme, bacteria can also form ATP if the reaction is running backwards ... Mariano D title Analysis of sequence homologies in plant and bacterial pyruvate phosphate dikinase ... performed by pyruvate kinase in Embden Meyerhof Parnas glycolysis. It should not be confused with pyruvate ... name of this enzyme class is ATP pyruvate, phosphate phosphotransferase . Other names in common use include pyruvate, orthophosphate dikinase , pyruvate phosphate dikinase phosphorylating , pyruvate, phosphate dikinase , pyruvate inorganic phosphate dikinase , pyruvate phosphate dikinase , pyruvate phosphate ligase , pyruvic phosphate dikinase , pyruvic phosphate ligase , pyruvate, Pi dikinase , and PPDK . This enzyme participates in pyruvate metabolism and carbon fixation . PPDK has been shown to undergo light dark regulation by the pyruvate dikinase regulatory protein PDRP . PDRP reversibly ... CR date 1968 title A new enzyme for the interconversion of pyruvate and phosphopyruvate and its role ... function of pyruvate kinase journal J. Biol. Chem. volume 243 pages 3202&ndash 4 pmid 4297474 issue 11 cite journal author Reeves RE date 1971 title Pyruvate,phosphate dikinase from ... cite journal author Reeves RE, Menzies RA, Hsu DS date 1968 title The pyruvate phosphate dikinase ... more details
enzyme Name pyruvate dehydrogenase cytochrome EC number 1.2.2.2 CAS number 9079 84 9 IUBMB EC number 1 2 2 2 GO code 0008985 image width caption In enzymology , a pyruvate dehydrogenase cytochrome EC number 1.2.2.2 is an enzyme that catalysis catalyzes the chemical reaction pyruvate ferricytochrome b sub 1 sub H sub 2 sub O math rightleftharpoons math acetate CO sub 2 sub ferrocytochrome b sub 1 sub The 3 substrate biochemistry substrates of this enzyme are pyruvate , ferricytochrome b1 , and water H sub 2 sub O , whereas its 3 product chemistry products are acetate , carbon dioxide CO sub 2 sub , and ferrocytochrome b1 . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the aldehyde or oxo group of donor with a cytochrome as acceptor. The systematic name of this enzyme class is pyruvate ferricytochrome b1 oxidoreductase . Other names in common use include pyruvate dehydrogenase , pyruvic dehydrogenase , pyruvic cytochrome b1 dehydrogenase , pyruvate ubiquinone 8 oxidoreductase , and pyruvate oxidase ambiguous . This enzyme participates in pyruvate metabolism . It has 2 cofactor biochemistry cofactors FAD , and Thiamin diphosphate . References reflist 1 cite journal author Williams FR and Hager LP date 1961 title A crystalline flavin pyruvate oxidase journal J. Biol. Chem. volume 236 pages PC36&ndash PC37 cite journal author Koland JG, Gennis RB date 1982 title Identification of an active site cysteine residue in Escherichia coli pyruvate oxidase journal J. Biol. Chem. volume 257 pages 6023&ndash 7 pmid 7042705 issue 11 1.2 enzyme stub Category EC 1.2.2 Category Flavin enzymes Category Thiamin diphosphate enzymes Category Enzymes of unknown structure it Piruvato deidrogenasi citocromo ... more details
enzyme Name R 3 amino 2 methylpropionate pyruvate transaminase EC number 2.6.1.40 CAS number 37279 00 8 IUBMB EC number 2 6 1 40 GO code 0047305 image width caption In enzymology , a R 3 amino 2 methylpropionate pyruvate transaminase EC number 2.6.1.40 is an enzyme that catalysis catalyzes the chemical reaction R 3 amino 2 methylpropanoate pyruvate math rightleftharpoons math 2 methyl 3 oxopropanoate L alanine Thus, the two substrate biochemistry substrates of this enzyme are R 3 amino 2 methylpropanoate and pyruvate , whereas its two product chemistry products are 2 methyl 3 oxopropanoate and L alanine . This enzyme belongs to the family of transferase s, specifically the transaminases , which transfer nitrogenous groups. The systematic name of this enzyme class is R 3 amino 2 methylpropanoate pyruvate aminotransferase . Other names in common use include D 3 aminoisobutyrate pyruvate transaminase , beta aminoisobutyrate pyruvate aminotransferase , D 3 aminoisobutyrate pyruvate aminotransferase , D 3 aminoisobutyrate pyruvate transaminase , R 3 amino 2 methylpropionate transaminase , and D beta aminoisobutyrate pyruvate aminotransferase . References reflist 1 cite journal author Kakimoto Y, Taniguchi K, Sano I year 1969 title D beta aminoisobutyrate pyruvate aminotransferase in mammalian liver and excretion of beta aminoisobutyrate by man journal J. Biol. Chem. volume 244 pages 335&ndash 40 pmid 5773299 issue 2 cite journal author Tamaki N, Sakata SF, Matsuda K year 2000 title Purification, properties, and sequencing of aminoisobutyrate aminotransferases from rat liver journal Methods Enzymol. volume 324 pages 376&ndash 89 pmid 10989446 doi 10.1016 S0076 6879 00 24247 X Category EC 2.6.1 Category Enzymes of unknown structure transferase stub ... more details
enzyme Name Arginine pyruvate transaminase EC number 2.6.1.84 CAS number IUBMB EC number 2 6 1 84 GO code image width caption Orphan date February 2009 In enzymology , an arginine pyruvate transaminase EC number 2.6.1.84 is an enzyme that catalysis catalyzes the chemical reaction L arginine pyruvate math rightleftharpoons math 5 guanidino 2 oxopentanoate L alanine Thus, the two substrate biochemistry substrates of this enzyme are L arginine and pyruvate , whereas its two product chemistry products are 5 guanidino 2 oxopentanoate and L alanine . This enzyme belongs to the family of transferase s, specifically the transaminases , which transfer nitrogenous groups. The systematic name of this enzyme class is L arginine pyruvate aminotransferase . Other names in common use include arginine pyruvate transaminase , and AruH . References reflist 1 cite journal author Yang Z, Lu CD date 2007 title Characterization of an arginine pyruvate transaminase in arginine catabolism of Pseudomonas aeruginosa PAO1 journal J. Bacteriol. volume 189 pages 3954&ndash 9 pmid 17416668 doi 10.1128 JB.00262 07 issue 11 pmc 1913410 cite journal author Yang Z, Lu CD date 2007 title Functional genomics enables identification of genes of the arginine transaminase pathway in Pseudomonas aeruginosa journal J. Bacteriol. volume 189 pages 3945&ndash 53 pmid 17416670 doi 10.1128 JB.00261 07 issue 11 pmc 1913404 transferase stub Category EC 2.6.1 Category Enzymes of unknown structure ... more details
enzyme Name lysine pyruvate 6 transaminase EC number 2.6.1.71 CAS number 114189 79 6 IUBMB EC number 2 6 1 71 GO code 0050065 image width caption In enzymology , a lysine pyruvate 6 transaminase EC number 2.6.1.71 is an enzyme that catalysis catalyzes the chemical reaction L lysine pyruvate math rightleftharpoons math L 2 aminoadipate 6 semialdehyde L alanine Thus, the two substrate biochemistry substrates of this enzyme are L lysine and pyruvate , whereas its two product chemistry products are L 2 aminoadipate 6 semialdehyde and L alanine . This enzyme belongs to the family of transferase s, specifically the transaminases , which transfer nitrogenous groups. The systematic name of this enzyme class is L lysine pyruvate aminotransferase . Other names in common use include lysine pyruvate aminotransferase , and Lys AT . References reflist 1 cite journal author Schmidt H, Bode R and Birnbaum D date 1988 title A novel enzyme, L lysine pyruvate aminotransferase, catalyses the first step of lysine catabolism in Pichia guilliermondii journal FEMS Microbiol. Lett. volume 49 pages 203&ndash 206 transferase stub Category EC 2.6.1 Category Enzymes of unknown structure ... more details
enzyme Name pyruvate oxidase CoA acetylating EC number 1.2.3.6 CAS number 62213 57 4 IUBMB EC number 1 2 3 6 GO code 0050244 image width caption In enzymology , a pyruvate oxidase CoA acetylating EC number 1.2.3.6 is an enzyme that catalysis catalyzes the chemical reaction pyruvate CoA O sub 2 sub math rightleftharpoons math acetyl CoA CO sub 2 sub H sub 2 sub O sub 2 sub The 3 substrate biochemistry substrates of this enzyme are pyruvate , coenzyme A CoA , and oxygen O sub 2 sub , whereas its 3 product chemistry products are acetyl CoA , carbon dioxide CO sub 2 sub , and hydrogen peroxide H sub 2 sub O sub 2 sub . This enzyme belongs to the family of oxidoreductase s, specifically those acting on the aldehyde or oxo group of donor with oxygen as acceptor. The systematic name of this enzyme class is pyruvate oxygen 2 oxidoreductase CoA acetylating . This enzyme participates in pyruvate metabolism . It employs one cofactor biochemistry cofactor , FAD . References reflist 1 cite journal author Reeves RE, Warren LG, Susskind B, Lo HS date 1977 title An energy conserving pyruvate to acetate pathway in Entamoeba histolytica. Pyruvate synthase and a new acetate thiokinase journal J. Biol. Chem. volume 252 pages 726&ndash 31 pmid 13076 issue 2 cite journal author Takeuchi T, Weinbach EC, Diamond LS date 1975 title Pyruvate oxidase CoA acetylating in Entamoeba histolytica journal Biochem. Biophys. Res. Commun. volume 65 pages 591&ndash 6 pmid 167776 doi 10.1016 S0006 291X 75 80187 2 issue 2 1.2 enzyme stub Category EC 1.2.3 Category Flavin enzymes Category Enzymes of unknown structure it Piruvato ossidasi CoA acetilante ja CoA ... more details
enzyme Name diaminobutyrate pyruvate transaminase EC number 2.6.1.46 CAS number 37277 95 5 IUBMB EC number 2 6 1 46 GO code 0047307 image width caption In enzymology , a diaminobutyrate pyruvate transaminase EC number 2.6.1.46 is an enzyme that catalysis catalyzes the chemical reaction L 2,4 diaminobutanoate pyruvate math rightleftharpoons math L aspartate 4 semialdehyde L alanine Thus, the two substrate biochemistry substrates of this enzyme are L 2,4 diaminobutanoate and pyruvate , whereas its two product chemistry products are L aspartate 4 semialdehyde and L alanine . This enzyme belongs to the family of transferase s, specifically the transaminases , which transfer nitrogenous groups. The systematic name of this enzyme class is L 2,4 diaminobutanoate pyruvate aminotransferase . Other names in common use include diaminobutyrate pyruvate aminotransferase , and L diaminobutyric acid transaminase . It employs one cofactor biochemistry cofactor , pyridoxal phosphate . References reflist 1 cite journal author Rao DR, Hariharan K, Vijayalakshmi KR date 1969 title A study of the metabolism of L alpha gamma diaminobutyric acid in a Xanthomonas species journal Biochem. J. volume 114 pages 107&ndash 15 pmid 4390206 issue 1 pmc 1184802 transferase stub Category EC 2.6.1 Category Pyridoxal phosphate enzymes Category Enzymes of unknown structure ... more details
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