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Literature summary for 2.5.1.47 extracted from

  • Ikegami, F.; Itagaki, S.; Murakoshi, I.
    Purification and characterization of two forms of cysteine synthase from Allium tuberosum (1993), Phytochemistry, 32, 31-34.
No PubMed abstract available

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
9
-
O-acetyl-L-Ser isoenzyme 2 Allium tuberosum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
36000
-
2 * 36000, isoenzyme 2, SDS-PAGE Allium tuberosum
40000
-
2 * 40000, isoenzyme 1, SDS-PAGE Allium tuberosum
73000
-
isoenzyme 2, gel filtration Allium tuberosum
81000
-
isoenzyme 1, gel filtration Allium tuberosum

Organism

Organism UniProt Comment Textmining
Allium tuberosum
-
two isoforms, immunologically distinct
-

Purification (Commentary)

Purification (Comment) Organism
-
Allium tuberosum

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Allium tuberosum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.01
-
isoenzyme 2 Allium tuberosum
1.36
-
isoenzyme 1 Allium tuberosum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information isoenzyme 1 and 2 have different substrate specificities towards various beta-substituted L-Cys Allium tuberosum ?
-
?
O-acetyl-L-Ser + NaCN 6.84% and 7.64% of activity with sulfide, isoenzymes 1 and 2, respectively Allium tuberosum beta-cyanoalanine + sodium acetate
-
?

Subunits

Subunits Comment Organism
dimer 2 * 40000, isoenzyme 1, SDS-PAGE Allium tuberosum
dimer 2 * 36000, isoenzyme 2, SDS-PAGE Allium tuberosum
More amino acid composition Allium tuberosum

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate one per subunit Allium tuberosum