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Literature summary for 2.6.1.13 extracted from

  • Jhee, K.H.; Yoshimura, T.; Esaki, N.; Yonaha, K.; Soda, K.
    Thermostable ornithine aminotransferase from Bacillus sp. YM-2: purification and characterization (1995), J. Biochem., 118, 101-108.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2
-
L-ornithine 37°C Bacillus sp. (in: Bacteria)
6.1
-
2-oxoglutarate 37°C Bacillus sp. (in: Bacteria)

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
41000
-
2 * 41000, SDS-PAGE Bacillus sp. (in: Bacteria)
82000
-
gel filtration Bacillus sp. (in: Bacteria)

Organism

Organism UniProt Comment Textmining
Bacillus sp. (in: Bacteria)
-
YM-2
-
Bacillus sp. (in: Bacteria) YM-2
-
YM-2
-

Purification (Commentary)

Purification (Comment) Organism
homogeneity Bacillus sp. (in: Bacteria)

Reaction

Reaction Comment Organism Reaction ID
L-ornithine + a 2-oxo carboxylate = L-glutamate 5-semialdehyde + an L-amino acid mechanism Bacillus sp. (in: Bacteria)

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
76
-
-
Bacillus sp. (in: Bacteria)

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-ornithine + 2-oxoglutarate 6% the rate of L-ornithine Bacillus sp. (in: Bacteria) glutamate + DELTA1-pyrroline-5-carboxylate
-
?
D-ornithine + 2-oxoglutarate 6% the rate of L-ornithine Bacillus sp. (in: Bacteria) YM-2 glutamate + DELTA1-pyrroline-5-carboxylate
-
?
L-ornithine + 2-oxoglutarate
-
Bacillus sp. (in: Bacteria) DELTA1-pyrroline-5-carboxylate + L-glutamate glutamate-gamma semialdehyde spontaneously cyclizes to form DELTA1-pyrroline-5-carboxylate ?
L-ornithine + 2-oxoglutarate
-
Bacillus sp. (in: Bacteria) YM-2 DELTA1-pyrroline-5-carboxylate + L-glutamate glutamate-gamma semialdehyde spontaneously cyclizes to form DELTA1-pyrroline-5-carboxylate ?
L-ornithine + glyoxylate weak Bacillus sp. (in: Bacteria) DELTA1-pyrroline-5-carboxylate + glycine
-
?
L-ornithine + glyoxylate weak Bacillus sp. (in: Bacteria) YM-2 DELTA1-pyrroline-5-carboxylate + glycine
-
?
L-ornithine + pyruvate
-
Bacillus sp. (in: Bacteria) DELTA1-pyrroline-5-carboxylate + L-alanine
-
?
L-ornithine + pyruvate
-
Bacillus sp. (in: Bacteria) YM-2 DELTA1-pyrroline-5-carboxylate + L-alanine
-
?
ornithine + oxaloacetate weak Bacillus sp. (in: Bacteria) DELTA1-pyrroline-5-carboxylate + L-aspartate
-
?
ornithine + oxaloacetate weak Bacillus sp. (in: Bacteria) YM-2 DELTA1-pyrroline-5-carboxylate + L-aspartate
-
?

Subunits

Subunits Comment Organism
dimer 2 * 41000, SDS-PAGE Bacillus sp. (in: Bacteria)

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
70
-
-
Bacillus sp. (in: Bacteria)

Cofactor

Cofactor Comment Organism Structure
pyridoxal 5'-phosphate 1 mol per mol of enzyme Bacillus sp. (in: Bacteria)