Enzyme

2.6.1.9 - Histidinol-phosphate transaminase

Alternative Name(s)
  • Imidazole acetol-phosphate transaminase.
  • Imidazolylacetolphosphate aminotransferase.
  • Histidinol-phosphate aminotransferase.

Catalytic Activity

2-oxoglutarate + L-histidinol phosphate = 3-(imidazol-4-yl)-2-oxopropyl phosphate + L-glutamate

Cofactors

Pyridoxal 5'-phosphate.

Reaction Mechanism

There are no Reaction Mechanism for this Enzyme

Reaction Parameters

  • Kinetic Parameters
    Organism KM Value [mM] Substrate Comment
    Mycobacterium tuberculosis 30 L-phenylalanine pH 8.4, 37°C
  • Temperature

    There are no reaction parameters information for this Enzyme.

  • pH
    Organism pH Range Comment
    Neurospora sp. 7.5 - 9 pH 7.5: about 85% of activity maximum, pH 9.0: about 50% of activity maximum, diphosphate buffer

Associated Proteins

Protein name Organism
Histidinol-phosphate aminotransferase 2, chloroplastic Mouse-ear cress
Histidinol-phosphate aminotransferase 1 Archaeoglobus fulgidus (strain ATCC 49558 / VC-16 / DSM 4304 / JCM 9628 / NBRC 100126)
Histidinol-phosphate aminotransferase 1, chloroplastic Mouse-ear cress
Histidinol-phosphate aminotransferase Escherichia coli (strain K12)
Histidinol-phosphate aminotransferase 3 Burkholderia lata (strain ATCC 17760 / DSM 23089 / LMG 22485 / NCIMB 9086 / R18194 / 383)

Citations