FEATURES

FAMILY

membrane magnesium transporter (TC 1.A.67) family

DESCRIPTION

Also known as EMC5_RAT, Mmgt1, Emc5, Tmem32. Part of the endoplasmic reticulum membrane protein complex (EMC) that enables the energy-independent insertion into endoplasmic reticulum membranes of newly synthesized membrane proteins. Preferentially accommodates proteins with transmembrane domains that are weakly hydrophobic or contain destabilizing features such as charged and aromatic residues. Involved in the cotranslational insertion of multi-pass membrane proteins in which stop-transfer membrane-anchor sequences become ER membrane spanning helices. It is also required for the post-translational insertion of tail-anchored/TA proteins in endoplasmic reticulum membranes. By mediating the proper cotranslational insertion of N-terminal transmembrane domains in an N-exo topology, with translocated N-terminus in the lumen of the ER, controls the topology of multi-pass membrane proteins like the G protein-coupled receptors (By similarity). By regulating the insertion of various proteins in membranes, it is indirectly involved in many cellular processes. May be involved in Mg(2+) transport (By similarity). Component of the ER membrane protein complex (EMC).

EXTERNAL LINKS

Mmgt1

ER membrane protein complex subunit 5

Mmgt1

Molecular Synopsis