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Cancer tissues displayed weak to moderate nuclear positivity with additional cytoplasmic staining in a few tissues. Rare case of urothelial cancer was strongly stained. Several cases of lymphomas, malignant gliomas, testicular, endometrial, colorectal and pancreatic cancers were negative.
Malignant tissues showed weak to moderate nuclear and cytoplasmic immunoreactivity. Strong nuclear staining was observed in several of malignant gliomas and renal cancers.
GENE INFORMATION
Gene name
UBB (HGNC Symbol)
Synonyms
FLJ25987, MGC8385
Description
Ubiquitin B (HGNC Symbol)
Entrez gene summary
This gene encodes ubiquitin, one of the most conserved proteins known. Ubiquitin has a major role in targeting cellular proteins for degradation by the 26S proteosome. It is also involved in the maintenance of chromatin structure, the regulation of gene expression, and the stress response. Ubiquitin is synthesized as a precursor protein consisting of either polyubiquitin chains or a single ubiquitin moiety fused to an unrelated protein. This gene consists of three direct repeats of the ubiquitin coding sequence with no spacer sequence. Consequently, the protein is expressed as a polyubiquitin precursor with a final amino acid after the last repeat. An aberrant form of this protein has been detected in patients with Alzheimer's disease and Down syndrome. Pseudogenes of this gene are located on chromosomes 1, 2, 13, and 17. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2013]