>tr|A0A5F5PYG5|A0A5F5PYG5_HORSE Chromobox 1 OS=Equus caballus GN=CBX1 MGKKQNKKKVEEVLEEEEEEYVVEKVLDRRVVKGKVEYLLKWKGFSDEDNTWEPEENLDC PDLIAEFLQSQKTAHETDKSEGGKRKADSDSEDKGEESKPKKKKEESEKPRGFARGLEPE RIIGATDSSGELMFLMK