How do the different types of actin-binding proteins relate to the ability of actin to form bundles and networks?
A)Proteins promoting bundle formation have one actin-binding site,whereas proteins promoting network formation have two actin-binding sites.
B)Different types of actin bind different actin-binding proteins to form bundles or networks.
C)Proteins that promote bundle formation bind ADP-actin,whereas proteins that promote network formation bind ATP-actin.
D)Proteins promoting bundle formation tend to be short and inflexible,whereas proteins that promote network formation tend to be longer and more flexible.

Question

Quizplus · Accepted Answer

Proteins that promote the formation of actin bundles are typically shorter and less flexible, allowing them to hold actin filaments closely together in parallel arrays. In contrast, proteins that facilitate the formation of actin networks are longer and more flexible, enabling them to cross-link actin filaments at various angles, creating a mesh-like structure. This difference in protein structure and flexibility is key to their roles in organizing actin filaments into bundles or networks.

How Do the Different Types of Actin-Binding Proteins Relate to the Ability