Question

what are actin ? in breif ❣​

Answer 1

Actin is a family of globular multi-functional proteins that form microfilaments. ... An actin protein is the monomeric subunit of two types of filaments in cells: microfilaments, one of the three major components of the cytoskeleton, and thin filaments, part of the contractile apparatus in muscle cells.

Answer 2

$\red{ANSWER}$

Actin is a protein found in the isotropic band which is also known as the light band and myosin is a protein found in the anisotropic band which is also known as the dark band.