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Your query returned 4 entries. Printable version
EC | 2.5.1.47 | ||||||||||||
Accepted name: | cysteine synthase | ||||||||||||
Reaction: | O-acetyl-L-serine + hydrogen sulfide = L-cysteine + acetate | ||||||||||||
For diagram of O3-Acetyl-L-serine metabolism, click here | |||||||||||||
Glossary: | O-acetyl-L-serine = (2S)-3-acetyloxy-2-aminopropanoic acid | ||||||||||||
Other name(s): | O-acetyl-L-serine sulfhydrylase; O-acetyl-L-serine sulfohydrolase; O-acetylserine (thiol)-lyase; O-acetylserine (thiol)-lyase A; O-acetylserine sulfhydrylase; O3-acetyl-L-serine acetate-lyase (adding hydrogen-sulfide); acetylserine sulfhydrylase; cysteine synthetase; S-sulfocysteine synthase; 3-O-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase; O3-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase | ||||||||||||
Systematic name: | O-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase | ||||||||||||
Comments: | A pyridoxal-phosphate protein. Some alkyl thiols, cyanide, pyrazole and some other heterocyclic compounds can act as acceptors. Not identical with EC 2.5.1.51 (β-pyrazolylalanine synthase), EC 2.5.1.52 (L-mimosine synthase) and EC 2.5.1.53 (uracilylalanine synthase). | ||||||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37290-89-4 | ||||||||||||
References: |
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EC | 2.5.1.51 | ||||||||||||
Accepted name: | β-pyrazolylalanine synthase | ||||||||||||
Reaction: | O-acetyl-L-serine + pyrazole = 3-(pyrazol-1-yl)-L-alanine + acetate | ||||||||||||
For diagram of O3-Acetyl-L-serine metabolism, click here | |||||||||||||
Glossary: | O-acetyl-L-serine = (2S)-3-acetyloxy-2-aminopropanoic acid |
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Other name(s): | β-(1-pyrazolyl)alanine synthase; β-pyrazolealanine synthase; β-pyrazolylalanine synthase (acetylserine); O3-acetyl-L-serine acetate-lyase (adding pyrazole); BPA-synthase; pyrazolealanine synthase; pyrazolylalaninase; 3-O-acetyl-L-serine:pyrazole 1-(2-amino-2-carboxyethyl)transferase; O3-acetyl-L-serine:pyrazole 1-(2-amino-2-carboxyethyl)transferase | ||||||||||||
Systematic name: | O-acetyl-L-serine:pyrazole 1-(2-amino-2-carboxyethyl)transferase | ||||||||||||
Comments: | The enzyme is highly specific for acetylserine and pyrazole. Not identical with EC 2.5.1.52 L-mimosine synthase. | ||||||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37290-81-6 | ||||||||||||
References: |
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EC | 2.5.1.52 | ||||||||||||
Accepted name: | L-mimosine synthase | ||||||||||||
Reaction: | O-acetyl-L-serine + 3,4-dihydroxypyridine = 3-(3,4-dihydroxypyridin-1-yl)-L-alanine + acetate | ||||||||||||
For diagram of O3-Acetyl-L-serine metabolism, click here | |||||||||||||
Glossary: | O-acetyl-L-serine = (2S)-3-acetyloxy-2-aminopropanoic acid L-mimosine = (2S)-2-amino-3-(3-hydroxy-4-oxopyridin-1(4H)-yl)propanoic acid |
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Other name(s): | O3-acetyl-L-serine acetate-lyase (adding 3,4-dihydroxypyridin-1-yl); 3-O-acetyl-L-serine:3,4-dihydroxypyridine 1-(2-amino-2-carboxyethyl)transferase; O3-acetyl-L-serine:3,4-dihydroxypyridine 1-(2-amino-2-carboxyethyl)transferase | ||||||||||||
Systematic name: | O-acetyl-L-serine:3,4-dihydroxypyridine 1-(2-amino-2-carboxyethyl)transferase | ||||||||||||
Comments: | Brings about the biosynthesis of L-mimosine in plants of the Mimosa and Leucaena genera. Not identical with EC 2.5.1.51, β-pyrazolylalanine synthase. | ||||||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 93229-75-5 | ||||||||||||
References: |
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EC | 4.3.3.8 | ||||||||||||
Accepted name: | mimosinase | ||||||||||||
Reaction: | L-mimosine + H2O = 3-hydroxy-4H-pyrid-4-one + pyruvate + NH3 (overall reaction) (1a) L-mimosine = 3-hydroxy-4H-pyrid-4-one + 2-aminoprop-2-enoate (1b) 2-aminoprop-2-enoate = 2-iminopropanoate (spontaneous) (1c) 2-iminopropanoate + H2O = pyruvate + NH3 (spontaneous) |
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Glossary: | L-mimosine = (2S)-2-amino-3-[3-hydroxy-4-oxopyridin-1(4H)-yl]propanoate | ||||||||||||
Other name(s): | mimosine amidohydrolase (incorrect) | ||||||||||||
Systematic name: | (2S)-2-amino-3-[3-hydroxy-4-oxopyridin-1(4H)-yl]propanoate 3-hydroxy-4H-pyrid-4-one-lyase (2-aminoprop-2-enoate-forming) | ||||||||||||
Comments: | A pyridoxal 5′-phosphate protein. The enzyme degrades the toxic amino acid L-mimosine. It cleaves a carbon-nitrogen bond, releasing 3-hydroxy-4H-pyrid-4-one and an unstable enamine product that tautomerizes to an imine form, which undergoes a hydrolytic deamination to form pyruvate and ammonia. It is thought to have evolved from EC 4.4.1.13, cysteine-S-conjugate β-lyase. It has been described in both mimosine-producing plants and some bacteria. | ||||||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 104118-49-2 | ||||||||||||
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