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Literature summary for 2.5.1.47 extracted from

  • Leon, J.; Vega, J.M.
    Separation and regulatory properties of O-acetyl-L-serine sulfhydrylase isoenzymes from Chlamydomonas reinhardtii (1991), Plant Physiol. Biochem., 29, 595-599.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
Aminooxyacetate 57% and 64% inhibition at 1 mM, isoenzymes 1 and 2, respectively Chlamydomonas reinhardtii
hydroxylamine 35% and 48% inhibition at 5 mM, isoenzymes 1 and 2, respectively Chlamydomonas reinhardtii
L-cysteine 50% inhibition at 5 mM, only isoenzyme 1 Chlamydomonas reinhardtii
methionine 46% and 37% inhibition at 1 mM, isoenzymes 1 and 2, respectively Chlamydomonas reinhardtii
O-acetylserine
-
Chlamydomonas reinhardtii
p-chloromercuribenzoate 14% and 4% inhibition at 1 mM, isoenzymes 1 and 2, respectively Chlamydomonas reinhardtii
Sulfide
-
Chlamydomonas reinhardtii

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
5.2
-
H2S pH 7.5, 50°C, isoenzyme 1 and 2 Chlamydomonas reinhardtii
9.6
-
O-acetyl-L-serine pH 7.5, 50°C, isoenzyme 1 and 2 Chlamydomonas reinhardtii

Organism

Organism UniProt Comment Textmining
Chlamydomonas reinhardtii
-
two isoenzymes
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
15.4
-
isoenzyme 2 Chlamydomonas reinhardtii
336
-
isoenzyme 1 Chlamydomonas reinhardtii

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
O-acetyl-L-serine
-
Chlamydomonas reinhardtii L-cysteine + acetate
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
50
-
-
Chlamydomonas reinhardtii

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8.5
-
-
Chlamydomonas reinhardtii

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
6.5
-
L-methionine pH 7.5, 50 C Chlamydomonas reinhardtii