Not a vit. K dependent factor:
D i.e. XII- Vit K dependent factors: factor II (prothrombin), VII, IX, X protein C and SQ- Vit K is a necessary cofactor for the enzyme that catalyzes carboxylation of glutamic residue in these proteins, necessary for their action- PT is first to be prolonged in Vit K deficiency.Q ( factor VII has sho t1/2)
II
VII
IX
XII