BTN1A1, Official Symbol BTN1A1provided by HGNC Official Full Name butyrophilin subfamily 1 member A1provided by HGNC Primary source HGNC:HGNC:1135 See related Ensembl:ENSG00000124557 MIM:601610; AllianceGenome:HGNC:1135 Gene type protein coding RefSeq status VALIDATED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as BT; BTN; BTN1 Summary Butyrophilin is the major protein associated with fat droplets in the milk. It is a member of the immunoglobulin superfamily. It may have a cell surface receptor function. The human butyrophilin gene is localized in the major histocompatibility complex (MHC) class I region of 6p and may have arisen relatively recently in evolution by the shuffling of exons between 2 ancestral gene families [provided by RefSeq, Jul 2008] Expression Low expression observed in reference dataset See more Orthologs mouse all