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Literature summary extracted from

  • Yamaguchi, T.; Zhu, X.; Masada, M.
    Purification and characterization of a novel cysteine synthase isozyme from spinach hydrated seeds (1998), Biosci. Biotechnol. Biochem., 62, 501-507.
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.5.1.47 hydroxylamine 57% loss of activity at 10 mM, isoenzyme 1' Spinacia oleracea

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.5.1.47 0.66
-
H2S pH 8.0, 25°, isoenzyme 1' Spinacia oleracea
2.5.1.47 8.3
-
O-acetyl-L-Ser pH 8.0, 25°, isoenzyme 1' Spinacia oleracea

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
2.5.1.47 mitochondrion all isoenzymes Spinacia oleracea 5739
-

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
2.5.1.47 34000
-
2 * 34000, SDS-PAGE Spinacia oleracea
2.5.1.47 68000
-
isoenzyme 1', gel filtration Spinacia oleracea

Organism

EC Number Organism UniProt Comment Textmining
2.5.1.47 Spinacia oleracea
-
isoenzyme 1'
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.5.1.47
-
Spinacia oleracea

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.5.1.47 seed hydrated seeds Spinacia oleracea
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.5.1.47 834
-
-
Spinacia oleracea

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.5.1.47 O-acetyl-L-serine
-
Spinacia oleracea L-cysteine + acetate
-
?

Subunits

EC Number Subunits Comment Organism
2.5.1.47 dimer 2 * 34000, SDS-PAGE Spinacia oleracea
2.5.1.47 More isoenzyme 1', N-terminal amino acid sequence differs from those of enzymes one, two, and three Spinacia oleracea

Temperature Stability [°C]

EC Number Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
2.5.1.47 60
-
1 min, no loss of activity Spinacia oleracea

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.5.1.47 7.5
-
isoenzyme 1', lower than isoenzymes one, two, and three Spinacia oleracea