Predicted to enable MHC class Ib protein binding, via antigen binding activity groove and small GTPase binding activity. Predicted to be involved in several processes, including positive regulation of interferon-gamma production; positive regulation of memory T cell activation; and regulation of organelle organization. Predicted to be located in cilium and mitochondrion. Orthologous to human CYRIB (CYFIP related Rac1 interactor B). [provided by Alliance of Genome Resources, Apr 2022]