Immunogen sequence: KAAVKSKKAT DTYKLYVEKY ALAKADFEQK MTETAQKFQD IEETHLIHIK EIIGSLSNAI KEIHLQIG Highest antigen sequence identity to the following orthologs: Mouse - 97%, Rat - 99%. FCHO2 (FCH domain only 2) is a ubiquitously expressed member of the FCFBS