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Cancer cells displayed moderate to strong cytoplasmic with additional nucleolar positivity in many cases. Several colorectal and a few pancreatic cancers showed additional membranous staining.
GENE INFORMATION
Gene name
ABCB9 (HGNC Symbol)
Synonyms
EST122234
Description
ATP-binding cassette, sub-family B (MDR/TAP), member 9 (HGNC Symbol)
Entrez gene summary
The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intra-cellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the MDR/TAP subfamily. Members of the MDR/TAP subfamily are involved in multidrug resistance as well as antigen presentation. This family member functions in the translocation of peptides from the cytosol into the lysosomal lumen. Alternative splicing of this gene results in distinct isoforms which are likely to have different substrate specificities. [provided by RefSeq, Jul 2011]