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Literature summary for 2.5.1.47 extracted from

  • Wirtz, M.; Droux, M.; Hell, R.
    O-acetylserine (thiol) lyase: an enigmatic enzyme of plant cysteine biosynthesis revisited in Arabidopsis thaliana (2004), J. Exp. Bot., 55, 1785-1798.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
additional information
-
additional information HPLC method for product quantification Arabidopsis thaliana
0.31
-
O3-acetyl-L-serine isoform B, pH 7.5, 25°C, Michaelis-Menten kinetics Arabidopsis thaliana
0.32
-
O3-acetyl-L-serine isoform B, pH 7.5, 25°C, Hill equation, Hill coefficient 1.03 Arabidopsis thaliana
0.43
-
O3-acetyl-L-serine isoform C, pH 7.5, 25°C, Michaelis-Menten kinetics Arabidopsis thaliana
0.51
-
O3-acetyl-L-serine isoform C, pH 7.5, 25°C, Hill equation, Hill coefficient 0.86 Arabidopsis thaliana
0.66
-
O3-acetyl-L-serine isoform A, pH 7.5, 25°C, Hill equation, Hill coefficient 1.05 Arabidopsis thaliana
0.69
-
O3-acetyl-L-serine isoform A, pH 7.5, 25°C, Michaelis-Menten kinetics Arabidopsis thaliana
3
-
hydrogen sulfide isoform B, pH 7.5, 25°C, Michaelis-Menten kinetics Arabidopsis thaliana
3.2
-
hydrogen sulfide isoform B, pH 7.5, 25°C, Hill equation, Hill coefficient 0.75 Arabidopsis thaliana
4.6
-
hydrogen sulfide isoform C, pH 7.5, 25°C, Hill equation, Hill coefficient 1.05 Arabidopsis thaliana
4.7
-
hydrogen sulfide isoform C, pH 7.5, 25°C, Michaelis-Menten kinetics Arabidopsis thaliana
5.6
-
hydrogen sulfide isoform A, pH 7.5, 25°C, Michaelis-Menten kinetics Arabidopsis thaliana
6.4
-
hydrogen sulfide isoform A, pH 7.5, 25°C, Hill equation, Hill coefficient 0.81 Arabidopsis thaliana

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol isoform A Arabidopsis thaliana 5829
-
mitochondrion isoform C Arabidopsis thaliana 5739
-
plastid isoform B Arabidopsis thaliana 9536
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Arabidopsis thaliana model of a dynamic cysteine synthesis system with regulatory function ?
-
?

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
3 isoforms, recombinant enzymes, fast increase in enzyme product in response to sulfate deprivation
-

Purification (Commentary)

Purification (Comment) Organism
recombinant protein of isoforms A,B,C Arabidopsis thaliana

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
550
-
isoform C, pH 7.5, 25°C Arabidopsis thaliana
590
-
isoform B, pH 7.5, 25°C Arabidopsis thaliana
900
-
isoform A, pH 7.5, 25°C Arabidopsis thaliana

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information model of a dynamic cysteine synthesis system with regulatory function Arabidopsis thaliana ?
-
?
additional information preferred state of sulfide is hydrogen sulfide Arabidopsis thaliana ?
-
?
O3-acetyl-L-serine + hydrogen sulfide
-
Arabidopsis thaliana L-cysteine + acetate
-
?

Synonyms

Synonyms Comment Organism
O-acetyl-L-serine (thiol) lyase
-
Arabidopsis thaliana
OAS-TL
-
Arabidopsis thaliana