FEATURES

FAMILY

DESCRIPTION

Also known as STAR3_HUMAN, STARD3, CAB1, MLN64. Sterol-binding protein that mediates cholesterol transport from the endoplasmic reticulum to endosomes (PubMed:11053434, PubMed:15930133, PubMed:22514632, PubMed:28377464). Creates contact site between the endoplasmic reticulum and late endosomes: localizes to late endosome membranes and contacts the endoplasmic reticulum via interaction with VAPA and VAPB (PubMed:24105263, PubMed:28377464). Acts as a lipid transfer protein that redirects sterol to the endosome at the expense of the cell membrane and favors membrane formation inside endosomes (PubMed:28377464). May also mediate cholesterol transport between other membranes, such as mitochondria membrane or cell membrane (PubMed:12070139, PubMed:19965586). However, such results need additional experimental evidences; probably mainly mediates cholesterol transport from the endoplasmic reticulum to endosomes (PubMed:28377464). Does not activate transcriptional cholesterol sensing (PubMed:28377464). Able to bind other lipids, such as lutein, a xanthophyll carotenoids that form the macular pigment of the retina (PubMed:21322544). Homodimer (PubMed:15718238, PubMed:16709157). Interacts (via the MENTAL domain) with STARD3NL (PubMed:15718238, PubMed:16709157). Interacts (via FFAT motif) with VAPA (PubMed:24105263, PubMed:28377464). Interacts (via FFAT motif) with VAPB (PubMed:24105263, PubMed:28377464). Interacts (via FFAT motif) with MOSPD2 (via MSP domain) (PubMed:29858488).

Also known as STAR3_HUMAN, STARD3, CAB1, MLN64. Sterol-binding protein that mediates cholesterol transport from the endoplasmic reticulum to endosomes (PubMed:11053434, PubMed:15930133, PubMed:22 ...

EXTERNAL LINKS

STARD3

StAR-related lipid transfer protein 3

STARD3

Molecular Synopsis