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A majority of malignant cells showed weak to moderate nuclear immunoreactivity with additional cytoplasmic staining in several tissues. Several colorectal, cervical and breast cancers were negative.
GENE INFORMATION
Gene name
COPS4 (HGNC Symbol)
Synonyms
CSN4
Description
COP9 signalosome subunit 4 (HGNC Symbol)
Entrez gene summary
This gene encodes one of eight subunits composing COP9 signalosome, a highly conserved protein complex that functions as an important regulator in multiple signaling pathways. The structure and function of COP9 signalosome is similar to that of the 19S regulatory particle of 26S proteasome. COP9 signalosome has been shown to interact with SCF-type E3 ubiquitin ligases and act as a positive regulator of E3 ubiquitin ligases. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]