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One case of mucinous cystadenocarcinoma of ovary and fractions of tumor cells in one case of pancreatic cancer displayed strong cytoplasmic positivity. Remaining cancer tissues were negative.
A few cases of hepatocellular carcinomas displayed moderate cytoplasmic and/or nuclear staining. Moderate cytoplasmic staining was observed in occasional cases of seminomas. Remaining cancer tissues were weakly stained or negative.
GENE INFORMATION
Gene name
POLR2J3
Synonyms
Description
Polymerase (RNA) II (DNA directed) polypeptide J3 (HGNC Symbol)
Entrez gene summary
This gene is a member of the RNA polymerase II subunit 11 gene family, which includes three genes in a cluster on chromosome 7q22.1 and a pseudogene on chromosome 7p13. The founding member of this family, DNA directed RNA polymerase II polypeptide J, has been shown to encode a subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. This locus produces multiple, alternatively spliced transcripts that potentially express isoforms with distinct C-termini compared to DNA directed RNA polymerase II polypeptide J. Most or all variants are spliced to include additional non-coding exons at the 3' end which makes them candidates for nonsense-mediated decay (NMD). Consequently, it is not known if this locus expresses a protein or proteins in vivo. [provided by RefSeq, Jul 2008]