This entry includes Bridge-like lipid transfer protein family member 2 (BLTP2, also known as KIAA0100 in human), a member of the Hobbit family of proteins. It is a tube-forming lipid transport protein which binds to phosphatidylinositols and affects phosphatidylinositol-4,5-bisphosphate (PtdIns-4,5-P2) distribution [1,2]. It belongs to the repeating beta-groove (RBG superfamily, which are all conserved lipid transfer proteins containing long hydrophobic grooves sharing the same structure consisting of multiple repeating modules consisting of five beta-sheets followed by a loop. This entry represents the sixth RBG module from BLTP2, analogous to Pfam:PF10293.

1: The Hob proteins are novel and conserved lipid-binding proteins at ER-PM contact sites. Neuman SD, Jorgensen JR, Cavanagh AT, Smyth JT, Selegue JE, Emr SD, Bashirullah A; J Cell Sci. 2022; [Epub ahead of print] PMID:34415038

2: A novel superfamily of bridge-like lipid transfer proteins. Neuman SD, Levine TP, Bashirullah A; Trends Cell Biol. 2022;32:962-974. PMID:35491307

3: Vps13-like proteins provide phosphatidylethanolamine for GPI anchor synthesis in the ER. Toulmay A, Whittle FB, Yang J, Bai X, Diarra J, Banerjee S, Levine TP, Golden A, Prinz WA; J Cell Biol. 2022; [Epub ahead of print] PMID:35015055