This domain is found at the N-terminal end of Ciliogenesis-associated TTC17-interacting protein from humans (CATIP) and similar sequences predominantly found in vertebrates. CATIP plays a role in primary ciliogenesis by modulating actin polymerisation [1]. According to structure predictions, this domain folds into a structure mainly consisting of beta-sheets.

1: C2orf62 and TTC17 are involved in actin organization and ciliogenesis in zebrafish and human. Bontems F, Fish RJ, Borlat I, Lembo F, Chocu S, Chalmel F, Borg JP, Pineau C, Neerman-Arbez M, Bairoch A, Lane L; PLoS One. 2014;9:e86476. PMID:24475127