Signal-containing nascent peptide translocates to endoplasmic reticulum

Stable Identifier
Reaction [dissociation]
Homo sapiens
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The Signal Recognition Particle (SRP) receptor mediates transfer of the ribosome:mRNA:nascent protein complex to the Translocon Complex. A coupled reaction (not annotated here) in which GTP molecules are hydrolyzed by the alpha subunit of the SRP Receptor and the SRP54 subunit of the SRP is thought to ensure release of the SRP only after the ribosome is properly reoriented. At the end of this process, the ribosome is attached to the endoplasmic reticulum (ER) membrane with its associated nascent polypeptide protruding through the Translocon Complex into the ER lumen.

Literature References
PubMed ID Title Journal Year
9631292 The role of assembly in insulin's biosynthesis

Dodson, G, Steiner, D

Curr Opin Struct Biol 1998
11964406 Endoplasmic reticulum-bound ribosomes reside in stable association with the translocon following termination of protein synthesis

Potter, MD, Nicchitta, CV

J Biol Chem 2002
18166647 The expanding role of the ER translocon in membrane protein folding

Skach, WR

J Cell Biol 2007
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