As discussed in Chemical Connections: Vitamin K, Blood
Chapter 27, Problem 27.2(choose chapter or problem)
As discussed in Chemical Connections: Vitamin K, Blood Clotting, and Basicity in Section 26.6D, vitamin K participates in carboxylation of glutamic acid residues of the blood-clotting protein prothrombin. (a) Write a structural formula for g-carboxyglutamic acid. (b) Account for the fact that the presence of g-carboxyglutamic acid escaped detection for many years; on routine amino acid analyses, only glutamic acid was detected.
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer