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Literature summary for 2.1.3.3 extracted from

  • Lee, Y.; Choi, Y.A.; Hwang, I.D.; Kim, S.G.; Kwon, Y.M.
    cDNA cloning of two isoforms of ornithine carbamoyltransferase from Canavalia lineata leaves and the effect of site-directed mutagenesis of the carbamoyl phosphate binding site (2001), Plant Mol. Biol., 46, 651-660.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expression of isoform 1 and 2 in Escherichia coli Canavalia lineata

Protein Variants

Protein Variants Comment Organism
H121R isoform 2, 80% increase in ornithine dependent activity, 64% decrease in canaline-dependent activity Canavalia lineata
L118M isoform 2, 515% increase in ornithine dependent activity, 54% decrease in canaline-dependent activity Canavalia lineata
L118M isoform 2, 617% increase in ornithine dependent activity, 55% decrease in canaline-dependent activity Canavalia lineata

Organism

Organism UniProt Comment Textmining
Canavalia lineata
-
2 isoforms
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
Canavalia lineata
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.0928
-
isoenzyme 2 with ornithine Canavalia lineata
0.574
-
isoenzyme 1 with canaline Canavalia lineata
1.24
-
isoenzyme 2 with canaline Canavalia lineata
8.31
-
isoenzyme 1 with ornithine Canavalia lineata

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
carbamoyl phosphate + canaline isoform 2 shows 13times higher canaline-dependent transcarbamoylase activity than ornithine-dependent transcarbamoylase activity Canavalia lineata O-ureidohomoserine + phosphate
-
?
carbamoyl phosphate + L-ornithine isoform 1 shows 14times higher ornithine-dependent transcarbamoylase activity than canaline-dependent transcarbamoylase activity Canavalia lineata phosphate + L-citrulline
-
?