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Literature summary for 4.4.1.9 extracted from

  • Hatzfeld, Y.; Maruyama, A.; Schmidt, A.; Noji, M.; Ishizawa, K.; Saito, K.
    beta-Cyanoalanine synthase is a mitochondrial cysteine synthase-like protein in spinach and Arabidopsis (2000), Plant Physiol., 123, 1163-1171.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
expression in Escherichia coli Arabidopsis thaliana
expression in Escherichia coli Spinacia oleracea

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.06
-
KCN
-
Arabidopsis thaliana
0.1
-
KCN
-
Spinacia oleracea
2.14
-
L-cysteine
-
Spinacia oleracea
2.54
-
L-cysteine
-
Arabidopsis thaliana
3.57
-
Na2S
-
Spinacia oleracea
8.24
-
Na2S
-
Arabidopsis thaliana
14.48
-
O-acetyl-L-serine
-
Spinacia oleracea
39.88
-
O-acetyl-L-serine
-
Arabidopsis thaliana

Localization

Localization Comment Organism GeneOntology No. Textmining
mitochondrion
-
Arabidopsis thaliana 5739
-
mitochondrion
-
Spinacia oleracea 5739
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
L-cysteine + HCN Arabidopsis thaliana
-
sulfide + L-3-cyanoalanine
-
?
L-cysteine + HCN Spinacia oleracea
-
sulfide + L-3-cyanoalanine
-
?
O-acetyl-L-serine + sulfide Spinacia oleracea 0.3% of activity with L-cysteine L-cysteine + acetate
-
?
O-acetyl-L-serine + sulfide Arabidopsis thaliana 0.6% of activity with L-cysteine L-cysteine + acetate
-
?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana Q9S757
-
-
Spinacia oleracea Q43153
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.4
-
substrate O-acetyl-L-serine Arabidopsis thaliana
0.4
-
substrate O-acetyl-L-serine Spinacia oleracea
62.1
-
substrate L-cysteine Arabidopsis thaliana
157
-
substrate L-cysteine Spinacia oleracea

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-cysteine + HCN
-
Arabidopsis thaliana sulfide + L-3-cyanoalanine
-
?
L-cysteine + HCN
-
Spinacia oleracea sulfide + L-3-cyanoalanine
-
?
L-cysteine + KCN
-
Arabidopsis thaliana L-3-cyanoalanin + K2S
-
?
L-cysteine + KCN
-
Spinacia oleracea L-3-cyanoalanin + K2S
-
?
L-cysteine + NaCN
-
Arabidopsis thaliana L-3-cyanoalanin + Na2S
-
?
L-cysteine + NaCN
-
Spinacia oleracea L-3-cyanoalanin + Na2S
-
?
O-acetyl-L-serine + sulfide 0.3% of activity with L-cysteine Spinacia oleracea L-cysteine + acetate
-
?
O-acetyl-L-serine + sulfide 0.6% of activity with L-cysteine Arabidopsis thaliana L-cysteine + acetate
-
?

Synonyms

Synonyms Comment Organism
Bsas3
-
Arabidopsis thaliana
Bsas3
-
Spinacia oleracea