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Literature summary for 3.4.21.6 extracted from

  • Barhoover, M.A.; Orban, T.; Beck, D.O.; Bukys, M.A.; Kalafatis, M.
    Contribution of amino acid region 334-335 from factor Va heavy chain to the catalytic efficiency of prothrombinase (2008), Biochemistry, 47, 6840-6850.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
Factor Va kcat values of prothrombinase assembled with cofactor factor Va mutants D334K/Y335F or D334A/Y335A is reduced. Prothrombinase assembled with quadruple mutant molecules E323Y/E330Y/D334K/Y335F or E323Y/E330Y/D334A/Y335A displays a second-order rate constant up to 400fold lower than the value obtained with wild-type factor Va Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
commercial preparation
-
Homo sapiens
-

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
additional information
-
additional information kcat values of prothrombinase assembled with mutant cofactor factor Va D334K/Y335F or D334A/Y335A is reduced. Prothrombinase assembled with quadruple mutant molecules E323Y/E330Y/D334K/Y335F or E323Y/E330Y/D334A/Y335A displays a second-order rate constant up to 400fold lower than the value obtained with wild-type factor Va Homo sapiens