FEATURES

FAMILY

DESCRIPTION

Also known as SC61G_HUMAN, SEC61G. Component of SEC61 channel-forming translocon complex that mediates transport of signal peptide-containing precursor polypeptides across the endoplasmic reticulum (ER) (By similarity). Forms a ribosome receptor and a gated pore in the ER membrane, both functions required for cotranslational translocation of nascent polypeptides (By similarity). The SEC61 channel is also involved in ER membrane insertion of transmembrane proteins: it mediates membrane insertion of the first few transmembrane segments of proteins, while insertion of subsequent transmembrane regions of multi-pass membrane proteins is mediated by the multi-pass translocon (MPT) complex (PubMed:32820719, PubMed:36261522). The SEC61 channel cooperates with the translocating protein TRAM1 to import nascent proteins into the ER (By similarity). The SEC61 channel-forming translocon complex consists of channel-forming core components SEC61A1, SEC61B and SEC61G and different auxiliary components such as SEC62 and SEC63 (By similarity). The SEC61 channel associates with the multi-pass translocon (MPT) complex (PubMed:32820719, PubMed:36261522).

EXTERNAL LINKS

SEC61G

Protein transport protein Sec61 subunit gamma

SEC61G

Molecular Synopsis