Rac

Rac is a subfamily of the Rho family of GTPases, small (~21 kDa) signaling G proteins (more specifically a GTPase).

The subgroup include:

Rac1.

Rac2.

Rac3

RhoG

Some research has suggested that Rac could be involved in mediating the process of forgetting.

Results strongly suggest that Rac acts as a positive regulator of the PAR-elicited release of phosphorylated-HSP27 from human platelets via p38 MAPK but not JNK 1).

1)
Uematsu K, Enomoto Y, Onuma T, Tsujimoto M, Doi T, Matsushima-Nishiwaki R, Tokuda H, Ogura S, Iida H, Kozawa O, Iwama T. Rac Regulates the TRAP-Induced Release of Phosphorylated-HSP27 from Human Platelets via p38 MAP Kinase but Not JNK. Cell Physiol Biochem. 2018 Sep 13;49(4):1523-1538. doi: 10.1159/000493456. [Epub ahead of print] PubMed PMID: 30212812.