background:
DNAJC3 may act as an inhibitor of both the autophosphorylation of EIF2AK2/PKR and the ability of EIF2AK2/PKR to catalyze phosphorylation of the EIF2A. It also functions as a Co-chaperone of HSPA8/HSC70 and is involved in the unfolded protein response (UPR) during ER stress. It has been reported that this protein stimulates the ATPase activity of HSPA8/HSC70.DNAJC3 is also involved in ativiral defense - it is activated in response to infection by influenza virus through the dissociation of DNAJB1. DNAJC3 is widely expressed and can be found at high levels in the testis and pancreas (expression in cell lines is variable).
Function:
Involved in the unfolded protein response (UPR) during ER stress. Co-chaperone of HSPA8/HSC70, it stimulates its ATPase activity. May inhibit both the autophosphorylation of EIF2AK2/PKR and the ability of EIF2AK2 to catalyze phosphorylation of the EIF2A. May inhibit EIF2AK3/PERK activity.
Subcellular Location:
Endoplasmic reticulum.
Tissue Specificity:
Widely expressed with high level in the pancreas and testis. Also expressed in cell lines with different levels.
Similarity:
Contains 1 J domain.
Contains 9 TPR repeats.
Database links:
Entrez Gene: 5611 Human
Entrez Gene: 100037258 Mouse
Entrez Gene: 63176 Rat
Omim: 601184 Human
SwissProt: Q13217 Human
SwissProt: Q91YW3 Mouse
SwissProt: Q9R0T3 Rat
Unigene: 59214 Human
Unigene: 12616 Mouse
Unigene: 162234 Rat
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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