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Literature summary for 4.4.1.15 extracted from

  • Soutourina, J.; Blanquet, S.; Plateau, P.
    Role of D-cysteine desulfhydrase in the adaptation of Escherichia coli to D-cysteine (2001), J. Biol. Chem., 276, 40864-40872.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
overexpressed in host strain, enables Escherichia coli to utilize D-cysteine as sole sulfur source Escherichia coli

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.3
-
D-cysteine 37°C, pH 8.0 Escherichia coli
0.9
-
3-chloro-D-alanine 37°C, pH 8.0 Escherichia coli

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
35000
-
SDS-PAGE, gel filtration Escherichia coli
35150
-
calculated from amino acid sequence including N-terminal methionine Escherichia coli

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
D-cysteine + H2O Escherichia coli physiological function unknown, detoxification of D-cysteine suggested, contributes to utilization of D-cysteine as sulfur source sulfide + NH3 + pyruvate
-
?

Organism

Organism UniProt Comment Textmining
Escherichia coli
-
various strains
-

Purification (Commentary)

Purification (Comment) Organism
-
Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3-chloro-D-alanine + H2O alpha,beta-elimination, more effective substrate than D-cysteine Escherichia coli pyruvate + NH3 + Cl-
-
?
D-cysteine + H2O
-
Escherichia coli sulfide + NH3 + pyruvate
-
?
D-cysteine + H2O physiological function unknown, detoxification of D-cysteine suggested, contributes to utilization of D-cysteine as sulfur source Escherichia coli sulfide + NH3 + pyruvate
-
?
additional information L-cysteine is not utilized Escherichia coli ?
-
?

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
72
-
D-cysteine 37°C, pH 8.0 Escherichia coli
281
-
3-chloro-D-alanine 37°C, pH 8.0 Escherichia coli

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate
-
Escherichia coli