KROK 1 Stomatology 2012 – Question 171 · KROK (Dentistry)
A few days before an operation a patient should be administered vitamin K or its synthetic analogue Vicasol. Vitamin K takes part in the following posttranslational modification of the II, VII, IX, X blood clotting factors:
- A. Deamination
- B. Transamination
- C. Carboxylation
- D. Decarboxylation
- E. Glycosylation
Hint
Vitamin K is a cofactor for an enzyme that adds a group to glutamate residues so that the clotting factors can bind Ca²⁺.
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