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A single case each of embryonal carcinoma and colorectal cancer exhibited strong nucleolar positivity. Several cases of head and neck cancers displayed weak nuclear staining. Moderate cytoplasmic staining was observed in a single case of renal cancer. Remaining cancer tissues were in general negative.
GENE INFORMATION
Gene name
AP1S3
Synonyms
Description
Adaptor-related protein complex 1, sigma 3 subunit (HGNC Symbol)
Entrez gene summary
This gene encodes a member of the adaptor-related protein complex 1, sigma subunit genes. The encoded protein is a component of adaptor protein complex 1 (AP-1), one of the AP complexes involved in claathrin-mediated vesicular transport from the Golgi or endosomes. Disruption of the pathway for display of HIV-1 antigens, which prevents recognition of the virus by cytotoxic T cells, has been shown to involve the AP-1 complex (PMID: 15569716). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2014]