Cytoplasmic FMR1-interacting protein 1 is a protein that in humans is encoded by the CYFIP1 gene. [5] [6]
CYFIP1 has been shown to interact with FMR1, [5] to the exclusion of FXR1 and FXR2. [5] It also forms part of the WAVE regulatory complex (WRC), [7] and based on the crystal structure of the WRC it is believed CYFIP1 provides the binding site for the complex to Rac1. [8]
The CYFIP1 gene with haploinsufficiency may provide a model for the associated neuropsychiatric and neurological phenotypes of disorders such as autism and schizophrenia. [9] [10] With autism, a potential molecular link was identified between FMR1-FM and the genetic disorder dup(15q), in terms of the cytoplasmic FMR1 interacting protein 1 (CYFIP1) up regulated in those with the disorder. [11]