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Tail-anchored membrane protein insertion into the endoplasmic reticulum.

ABSTRACT: Membrane proteins are inserted into the endoplasmic reticulum (ER) by two highly conserved parallel pathways. The well-studied co-translational pathway uses signal recognition particle (SRP) and its receptor for targeting and the SEC61 translocon for membrane integration. A recently discovered post-translational pathway uses an entirely different set of factors involving transmembrane domain (TMD)-selective cytosolic chaperones and an accompanying receptor at the ER. Elucidation of the structural and mechanistic basis of this post-translational membrane protein insertion pathway highlights general principles shared between the two pathways and key distinctions unique to each.

SUBMITTER: Hegde RS

PROVIDER: S-EPMC3760496 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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Tail-anchored membrane protein insertion into the endoplasmic reticulum.

Hegde Ramanujan S RS Keenan Robert J RJ

Nature reviews. Molecular cell biology 20111116 12

Membrane proteins are inserted into the endoplasmic reticulum (ER) by two highly conserved parallel pathways. The well-studied co-translational pathway uses signal recognition particle (SRP) and its receptor for targeting and the SEC61 translocon for membrane integration. A recently discovered post-translational pathway uses an entirely different set of factors involving transmembrane domain (TMD)-selective cytosolic chaperones and an accompanying receptor at the ER. Elucidation of the structura ...[more]

PMID: 22086371

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