RBP4, Official Symbol RBP4provided by HGNC Official Full Name retinol binding protein 4provided by HGNC Primary source HGNC:HGNC:9922 See related Ensembl:ENSG00000138207 MIM:180250; AllianceGenome:HGNC:9922 Gene type protein coding RefSeq status REVIEWED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as RDCCAS; MCOPCB10 Summary This protein belongs to the lipocalin family and is the specific carrier for retinol (vitamin A alcohol) in the blood. It delivers retinol from the liver stores to the peripheral tissues. In plasma, the RBP-retinol complex interacts with transthyretin which prevents its loss by filtration through the kidney glomeruli. A deficiency of vitamin A blocks secretion of the binding protein posttranslationally and results in defective delivery and supply to the epidermal cells. [provided by RefSeq, Jul 2008] Expression Biased expression in liver (RPKM 2545.8) and fat (RPKM 387.7) See more Orthologs mouse all