Chromosomal assignment of two human B-raf (Rmil) proto-oncogene loci: B-raf-1 encoding the p94Braf/Rmil and B-raf-2, a processed pseudogene
Eychène, A.; Barnier, J.V.; Apiou, F.; Dutrillaux, B.; Calothy, G.
Oncogene 7(8): 1657-1660
1992
ISSN/ISBN: 0950-9232 PMID: 1630826 Document Number: 388216
The B-raf gene is the human homolog of the avian c-Rmil proto-oncogene encoding a 94-kDa serine/threonine kinase detected in avian cells. We have previously shown that this protein contains amino-terminal sequences not found in other proteins of the mil/raf gene family. These sequences are encoded by three exons in the avian genome. We report that these three exons are conserved in the human B-raf gene and that they encode an amino acid sequence similar to that of the avian c-Rmil gene, indicating that in both avian and mammalian species the product of the B-raf/c-Rmil gene is a 94-kDa protein. We also identified two human B-raf loci: B-raf-1, located on chromosome 7q34, which encodes the functional B-raf/Rmil gene product, and B-raf-2, an inactive processed pseudogene located on chromosome Xq13.