Question

If a cell needs to make a thin actin filament thicker it will use what?

Select one:

- Capping protein

- Tubulin

- Bundling protein

- Cohesion protein

- Crosslinking protein

Answer 1

Crosslinking proteins are needed to make a thin actin filament into thicker.Chemically joining of two or more molecules by covalent bonds by a process called Crosslinking.The entire set of crosslinking with the use of a protein called crosslinking proteins.the crosslinking proteins, suchas α-actinin, have low affinities for actin filaments with Kds in the micromolar range. At steady state in vitro, these crosslinking proteins bind to and dissociate from actin filaments on a second or subsecond time scale. Consequently, gels of actin filaments and α-actinin are much more rigid when deformed rapidly than when the deformations are slower, because crosslinks resisting the displacement of the filaments can rearrange if given sufficient time. Dynamic crosslinks between filaments allow actin networks to remodel passively as cells move. Cells also remodel the actin cytoskeleton actively by nucleating, severing or depolymerizing filaments.