PITPNB, Official Symbol PITPNBprovided by HGNC Official Full Name phosphatidylinositol transfer protein betaprovided by HGNC Primary source HGNC:HGNC:9002 See related Ensembl:ENSG00000180957 MIM:606876; AllianceGenome:HGNC:9002 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 VIB1B; PtdInsTP; PI-TP-beta Summary This gene encodes a cytoplasmic protein that catalyzes the transfer of phosphatidylinositol and phosphatidylcholine between membranes. This transfer activity is required for COPI complex-mediated retrograde transport from the Golgi apparatus to the endoplasmic reticulum. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Sep 2013] Expression Ubiquitous expression in esophagus (RPKM 27.0), urinary bladder (RPKM 21.0) and 25 other tissues See more Orthologs mouse all