Q. Actin protein occurs in which of the following two forms?

 335  158 Locomotion and Movement Report Error

Solution:

Actin is a protein that functions in the contractile system of skeletal muscle, where it is found in the thin filaments. Actin protein occurs in two forms - polymeric F actin and monomeric G actin. In muscles, fibrous actin (F - actin) is a helical polymer of a globular polypeptide chain, G-actin