Enzymes
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- Name help_outline 2-(acetamidomethylene)-3-(hydroxymethyl)succinate Identifier CHEBI:19418 Charge -2 Formula C8H9NO6 InChIKeyhelp_outline BHXUWJPOOLFBAP-UHFFFAOYSA-L SMILEShelp_outline CC(=O)NC=C(C(CO)C([O-])=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,485 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,932 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 2-(hydroxymethyl)-4-oxobutanoate Identifier CHEBI:58135 Charge -1 Formula C5H7O4 InChIKeyhelp_outline QZXWGGGNYORFOK-UHFFFAOYSA-M SMILEShelp_outline OCC(CC=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline acetate Identifier CHEBI:30089 (CAS: 71-50-1) help_outline Charge -1 Formula C2H3O2 InChIKeyhelp_outline QTBSBXVTEAMEQO-UHFFFAOYSA-M SMILEShelp_outline CC([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 182 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline NH4+ Identifier CHEBI:28938 (CAS: 14798-03-9) help_outline Charge 1 Formula H4N InChIKeyhelp_outline QGZKDVFQNNGYKY-UHFFFAOYSA-O SMILEShelp_outline [H][N+]([H])([H])[H] 2D coordinates Mol file for the small molecule Search links Involved in 543 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CO2 Identifier CHEBI:16526 (CAS: 124-38-9) help_outline Charge 0 Formula CO2 InChIKeyhelp_outline CURLTUGMZLYLDI-UHFFFAOYSA-N SMILEShelp_outline O=C=O 2D coordinates Mol file for the small molecule Search links Involved in 1,058 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:17677 | RHEA:17678 | RHEA:17679 | RHEA:17680 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Enzymes of vitamin B6 degradation. Purification and properties of two N-acetylamidohydrolases.
Huynh M.S., Snell E.E.
alpha-(N-Acetylaminomethylene)succinic acid hydrolase (Compound A hydrolase, EC 3.5.1-) and alpha-hydroxymethyl-alpha'-(N-acetylaminomethylene)succinic acid hydrolase (Compound B hydrolase, EC 3.5.1-) were purified to homogeneity from Pseudomonas MA-1 and Arthrobacter Cr-7, respectively. The two i ... >> More
alpha-(N-Acetylaminomethylene)succinic acid hydrolase (Compound A hydrolase, EC 3.5.1-) and alpha-hydroxymethyl-alpha'-(N-acetylaminomethylene)succinic acid hydrolase (Compound B hydrolase, EC 3.5.1-) were purified to homogeneity from Pseudomonas MA-1 and Arthrobacter Cr-7, respectively. The two inducible enzymes catalyze Reactions 1 and 2, respectively, which release the first generally useful anabolic intermediates during growth of these organisms with (formula; see text) pyridoxine as a sole source of carbon and nitrogen. Compound A hydrolase is a monomeric protein of Mr 32,500 with aspartic acid as its NH2-terminal residue. Compound B hydrolase (Mr congruent to 205,000) is a multimer containing probably six identical subunits with glycine as the NH2 terminus. The two enzymes have quite different amino acid analyses, although both are high in Asx and Glx, lack tryptophan, and show similar stabilities to pH and temperature. Compound A hydrolase has a pI of 4.4, a Km of 3.3 microM, and a Vmax of 3.1 mumol X min-1 X mg-1 at pH 6.5 and 25 degrees C; no analogue substrates were found. Compound B hydrolase has a pI of 4.2, a Km of 25 microM, and a Vmax of 3.8 mumol X min-1 X mg-1 at 25 degrees C and pH 7.0; it also hydrolyzes Compound A slowly. Both enzymes are inhibited competitively by di- and tricarboxylic acids, itaconic acid being among the most effective. Sulfite inhibits both enzymes by a time-dependent mechanism not yet understood. The two amidases appear to differ greatly in architecture despite the similarity in properties and in the overall reactions they catalyze. << Less
J Biol Chem 260:2379-2383(1985) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.