Thrombin A-Chain : Activation Remnant or Allosteric Effector?

الملخص EN

Although prothrombin is one of the most widely studied enzymes in biology, the role of the thrombin A-chain has been neglected in comparison to the other domains.

This paper summarizes the current data on the prothrombin catalytic domain A-chain region and the subsequent thrombin A-chain.

Attention is given to biochemical characterization of naturally occurring prothrombin A-chain mutations and alanine scanning mutants in this region.

While originally considered to be simply an activation remnant with little physiologic function, the thrombin A-chain is now thought to play a role as an allosteric effector in enzymatic reactions and may also be a structural scaffold to stabilize the protease domain.