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PMID:12411443

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Citation

Cunnea, PM, Miranda-Vizuete, A, Bertoli, G, Simmen, T, Damdimopoulos, AE, Hermann, S, Leinonen, S, Huikko, MP, Gustafsson, JA, Sitia, R and Spyrou, G (2003) ERdj5, an endoplasmic reticulum (ER)-resident protein containing DnaJ and thioredoxin domains, is expressed in secretory cells or following ER stress. J. Biol. Chem. 278:1059-66

Abstract

A complex array of chaperones and enzymes reside in the endoplasmic reticulum (ER) to assist the folding and assembly of and the disulfide bond formation in nascent secretory proteins. Here we characterize a novel human putative ER co-chaperone (ERdj5) containing domains resembling DnaJ, protein-disulfide isomerase, and thioredoxin domains. Homologs of ERdj5 have been found in Caenorhabditis elegans and Mus musculus. In vitro experiments demonstrated that ERdj5 interacts via its DnaJ domain with BiP in an ATP-dependent manner. ERdj5 is a ubiquitous protein localized in the ER and is particularly abundant in secretory cells. Its transcription is induced during ER stress, suggesting potential roles for ERdj5 in protein folding and translocation across the ER membrane.

Links

PubMed Online version:10.1074/jbc.M206995200

Keywords

Adenosine Triphosphate/pharmacology; Amino Acid Sequence; Carrier Proteins/metabolism; Chromosome Mapping; Cloning, Molecular; Endoplasmic Reticulum/chemistry; Endoplasmic Reticulum/metabolism; HSP40 Heat-Shock Proteins; Heat-Shock Proteins/chemistry; Humans; Molecular Chaperones/analysis; Molecular Chaperones/chemistry; Molecular Chaperones/genetics; Molecular Chaperones/metabolism; Molecular Sequence Data; Protein Folding; Protein Transport; Sequence Alignment; Thioredoxins/chemistry

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


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References

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