Tube-forming lipid transport protein which binds to phosphatidylinositols and affects phosphatidylinositol-4,5-bisphosphate (PtdIns-4,5-P2) distribution.
Subcellular locations: Cell membrane, Endoplasmic reticulum membrane, Mitochondrion membrane
Localizes to endoplasmic reticulum-cell membrane and some endoplasmic reticulum-mitochondria contact sites.
Expressed in pancreas, placenta and up-regulated in breast carcinoma epithelial cells, ductal in situ carcinoma (DCIS), invasive breast carcinoma (IBC) and metastatic breast carcinoma cells (MET).