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ERp57/GRP58: A protein with multiple functions

✍ Scribed by Carlo Turano; Elisa Gaucci; Caterina Grillo; Silvia Chichiarelli

Book ID
111490481
Publisher
SP Versita
Year
2011
Tongue
English
Weight
502 KB
Volume
16
Category
Article
ISSN
1425-8153

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✦ Synopsis

Abstract

The protein ERp57/GRP58 is a stress-responsive protein and a component of the protein disulfide isomerase family. Its functions in the endoplasmic reticulum are well known, concerning mainly the proper folding and quality control of glycoproteins, and participation in the assembly of the major histocompatibility complex class 1. However, ERp57 is present in many other subcellular locations, where it is involved in a variety of functions, primarily suggested by its participation in complexes with other proteins and even with DNA. While in some instances these roles need to be confirmed by further studies, a great number of observations support the participation of ERp57 in signal transduction from the cell surface, in regulatory processes taking place in the nucleus, and in multimeric protein complexes involved in DNA repair.

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## Abstract The protein ERp57/GRP58 is a member of the protein disulfide isomerase family and is also a glucose‐regulated protein, which, together with the other GRPs, is induced by a variety of cellular stress conditions. ERp57/GRP58 is mainly located in the endoplasmic reticulum (ER), but has als