Phosphatidylinositol transfer protein beta isoform (PI-TP-beta) (PtdIns transfer protein beta) (PtdInsTP beta)
1_MVLIK 6_ EFRVV 11_ LPCSV 16_ QEYQV 21_ GQLYS 26_ VAEAS 31_ KNETG 36_ GGEGI 41_ EVLKN 46_ EPYEK 51_ DGEKG 56_ QYTHK 61_ IYHLK 66_ SKVPA 71_ FVRMI 76_ APEGS 81_ LVFHE 86_ KAWNA 91_ YPYCR 96_ TIVTN 101_ EYMKD 106_ DFFIK 111_ IETWH 116_ KPDLG 121_ TLENV 126_ HGLDP 131_ NTWKT 136_ VEIVH 141_ IDIAD 146_ RSQVE 151_ PADYK 156_ ADEDP 161_ ALFQS 166_ VKTKR 171_ GPLGP 176_ NWKKE 181_ LANSP 186_ DCPQM 191_ CAYKL 196_ VTIKF 201_ KWWGL 206_ QSKVE 211_ NFIQK 216_ QEKRI 221_ FTNFH 226_ RQLFC 231_ WIDKW 236_ IDLTM 241_ EDIRR 246_ MEDET 251_ QKELE 256_ TMRKR 261_ GSVRG 266_TSAAD
1: Catalyzes the transfer of phosphatidylinositol and phosphatidylcholine between membranes (PubMed:10531358, PubMed:18636990, PubMed:20332109). Also catalyzes the transfer of sphingomyelin (By similarity). Required for COPI-mediated retrograde transport from the Golgi to the endoplasmic reticulum; phosphatidylinositol and phosphatidylcholine transfer activity is essential for this function (PubMed:20332109)