This domain family is found in eukaryotes, and is approximately 120 amino acids in length. The family is found in association with Pfam:PF01412, Pfam:PF00023, Pfam:PF08518. GIT1 plays an important role in cell adhesion, motility, cytoskeletal remodelling and membrane trafficking. To perform this function, it localises p21-activated kinase (PAK) and PAK-interactive exchange factor to focal adhesions. Its activation is regulated by interaction between its paxillin-binding C terminal and the LD motifs of paxillin. The C terminal folds into a four helix bundle.

1: GIT1 paxillin-binding domain is a four-helix bundle, and it binds to both paxillin LD2 and LD4 motifs. Zhang ZM, Simmerman JA, Guibao CD, Zheng JJ; J Biol Chem. 2008;283:18685-18693. PMID:18448431