XKR4, Official Symbol XKR4provided by HGNC Official Full Name XK related 4provided by HGNC Primary source HGNC:HGNC:29394 See related Ensembl:ENSG00000206579 AllianceGenome:HGNC:29394 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 XRG4; hXKR4 Summary Enables phospholipid scramblase activity. Involved in phosphatidylserine exposure on apoptotic cell surface. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022] Expression Biased expression in brain (RPKM 2.2), colon (RPKM 0.4) and 8 other tissues See more Orthologs mouse all