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Most malignant tissues showed weak to moderate cytoplasmic positivity. Strong staining was observed in cases of malignant lymphomas, colorectal and endometrial cancers.
Malignancies generally displayed weak to moderate cytoplasmic immunoreactivity, in some cases accompanied with nuclear staining in a fraction of the cells. Strong positivity was found in some prostate cancers, hepatocellular carcinomas and in a few malignant gliomas. Squamous cell carcinomas were negative or displayed faint positivity.
GENE INFORMATION
Gene name
USP2 (HGNC Symbol)
Synonyms
UBP41
Description
Ubiquitin specific peptidase 2 (HGNC Symbol)
Entrez gene summary
This gene encodes a member of the family of de-ubiquitinating enzymes, which belongs to the peptidase C19 superfamily. The encoded protein is a ubiquitin-specific protease which is required for TNF-alpha (tumor necrosis factor alpha) -induced NF-kB (nuclear factor kB) signaling. This protein deubiquitinates polyubiquitinated target proteins such as fatty acid synthase, murine double minute 2 (MDM2), MDM4/MDMX and cyclin D1. MDM2 and MDM4 are negative regulators of the p53 tumor suppressor and cyclin D1 is required for cell cycle G1/S transition. Multiple alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Aug 2011]