Ankyrin Repeat Domain Protein 30B (ANKRD30B)
NY-BR-1.1; Serologically defined breast cancer antigen NY-BR-1.1
NY-BR-1, representing 6 of 14 clones isolated, showed tissue-restricted mRNA expression in breast and testis but not in 13 other normal tissues tested. Additional structural features include five tandem ankyrin repeats, implying a role for NY-BR-1 in protein-protein interactions. NY-BR-1 thus represents a breast tissue-specific putative transcription factor with autoimmunogenicity in breast cancer patients. In addition to NY-BR-1, a homologous gene, NY-BR-1.1, was identified in this study. NY-BR-1.1 shares 54% amino acid homology with NY-BR-1 and also shows tissue-restricted mRNA expression. However, unlike NY-BR-1, NY-BR-1.1 mRNA is expressed in brain, in addition to breast and testis. The exon structure of NY-BR-1.1 remains to be defined. Using human genome database, NY-BR-1 was localized to chromosome 10p11-p12, and NY-BR-1.1 was tentatively localized to chromosome 9.
Organism species: Homo sapiens (Human)
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