Peptide sequence: MLPRLLLLIC APLCEPAELF LIASPSHPTE GSPVTLTCKM PFLQSSDAQF Sequence homology: Cow: 93%; Horse: 83%; Human: 100%; Mouse: 77%. Fc receptor-like 1 (FCRL1) is a gene situated on chromosome 1q23, encoding a protein that is part of the Fc recepto