The Sec61 complex is responsible for translocation of proteins across the rough endoplasmic reticulum membrane. Sec61 is composed of three subunits: alpha, beta, and gamma; that associate to form a heterotrimer. Multiple heterotrimers associate forming the ER translocon. Sec61 alpha is a polytopic protein that has ten membrane-spanning loops. Sec61 has been found to be tightly associated with membrane bound ribosomes, either directly or through adaptor proteins, and is required for assembly of membrane and secretory proteins.
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Protein Aliases: protein translocation complex beta; protein transport protein SEC61 beta subunit; Protein transport protein Sec61 subunit beta; sec61 beta; Sec61 beta subunit; Sec61 complex, beta subunit
Gene Aliases: 1190006C12Rik; AI326121; AW122942; SEC61B
Molecular Function: membrane traffic protein