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Literature summary extracted from

  • Ikegami, F.; Kaneko, M.; Kamiyama, H.; Murakoshi, I.
    Purification and characterization of cysteine synthases from Citrullus vulgaris (1988), Phytochemistry, 27, 697-701.
No PubMed abstract available

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.5.1.47 0.033
-
H2S pH 8.0, 30°C, isoenzyme 1 Citrullus lanatus subsp. vulgaris
2.5.1.47 1.5
-
O-acetyl-L-Ser pH 8.0, 30°C, isoenzyme 2 Citrullus lanatus subsp. vulgaris
2.5.1.47 2.6
-
O-acetyl-L-Ser pH 8.0, 30°C, isoenzyme 1 Citrullus lanatus subsp. vulgaris

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
2.5.1.47 29000
-
2 * 29000, SDS-PAGE Citrullus lanatus subsp. vulgaris
2.5.1.47 58000
-
gel filtration Citrullus lanatus subsp. vulgaris

Organism

EC Number Organism UniProt Comment Textmining
2.5.1.47 Citrullus lanatus subsp. vulgaris
-
two isoforms
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.5.1.47
-
Citrullus lanatus subsp. vulgaris

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.5.1.47 seedling
-
Citrullus lanatus subsp. vulgaris
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.5.1.47 649
-
isoenzyme 1 Citrullus lanatus subsp. vulgaris
2.5.1.47 691
-
isoenzyme 2 Citrullus lanatus subsp. vulgaris

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.5.1.47 additional information beta-substituted alanines, low activity Citrullus lanatus subsp. vulgaris ?
-
?
2.5.1.47 O-acetyl-L-Ser + 2-propene-1-thiol 6.2% of the activity with sulfide, isoenzyme 2 Citrullus lanatus subsp. vulgaris S-allyl-L-cysteine + ?
-
?
2.5.1.47 O-acetyl-L-Ser + H2S
-
Citrullus lanatus subsp. vulgaris L-Cys + acetate
-
?
2.5.1.47 O-acetyl-L-Ser + mercaptoacetic acid 2.2% of activity with sulfide, isoenzyme 1 and 2 Citrullus lanatus subsp. vulgaris S-carboxymethyl-L-cysteine
-
?
2.5.1.47 O-acetyl-L-Ser + methyl mercaptan 21.5% and 77% of activity with sulfide, isoenzymes 1 and 2, respectively Citrullus lanatus subsp. vulgaris S-methylcysteine + acetate
-
?
2.5.1.47 O-acetyl-L-serine
-
Citrullus lanatus subsp. vulgaris L-cysteine + acetate
-
?

Subunits

EC Number Subunits Comment Organism
2.5.1.47 dimer 2 * 29000, SDS-PAGE Citrullus lanatus subsp. vulgaris
2.5.1.47 More amino acid composition Citrullus lanatus subsp. vulgaris
2.5.1.47 More isoenzymes have different cysteine and methionine content Citrullus lanatus subsp. vulgaris

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.5.1.47 8
-
-
Citrullus lanatus subsp. vulgaris