title: Gene BR140, which is related to AF10 and AF17, maps to chromosome band 3p25.
abstract: The genes AF10 and AF17 have been identified as the basis of the t(10;11) and t(11;17) translocations, events that result in their fusion to the MLL/HRX gene in acute myeloid leukaemias. AF10 and AF17 bear significant homology to each other within their putative zinc finger and leucine zipper domains, although they are diverged outside these regions. The BR140 gene encodes a 140 kDa protein of unknown function that contains a putative zinc finger domain, a leucine zipper region, and, in addition, a bromo domain. The zinc finger and leucine zipper domains of BR140 have significant homology to those of AF10 and AF17, suggesting that it belongs to this newly described gene family and, therefore, could be a target for chromosome translocation. To assess the potential involvement of BR140 in chromosome translocations in leukaemia, the chromosomal location of the BR140 gene has been determined by using several independent methods. A combination of Southern analysis, polymerase chain reactions (PCR) on monochromosomal cell hybrids, and fluorescence in situ hybridisation (FISH) has been used to show that the BR140 gene maps to chromosome band 3p25.
authors.affiliation: Imperial Cancer Research Fund, Department of Medical Oncology, St. Bartholomew's Hospital, London, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Gregorini
authors.forename: F I
authors.initials: FI
authors.lastname: Sahin
authors.forename: D M
authors.initials: DM
authors.lastname: Lillington
authors.forename: J
authors.initials: J
authors.lastname: Meerabux
authors.forename: V
authors.initials: V
authors.lastname: Saha
authors.forename: P
authors.initials: P
authors.lastname: McCullagh
authors.forename: M
authors.initials: M
authors.lastname: Bocci
authors.forename: S
authors.initials: S
authors.lastname: Menevse
authors.forename: S
authors.initials: S
authors.lastname: Papa
authors.forename: B D
authors.initials: BD
authors.lastname: Young
mesh_terms: D015139:Blotting, Southern; D002871:Chromosome Banding; D002893:Chromosomes, Human, Pair 3; D004268:DNA-Binding Proteins; D004587:Electrophoresis, Agar Gel; D006801:Humans; D017404:In Situ Hybridization, Fluorescence; D016350:Leucine Zippers; D009363:Neoplasm Proteins / Q000235:genetics*; D014157:Transcription Factors / Q000235:genetics*; D016335:Zinc Fingers
chemical_list: D004268:DNA-Binding Proteins; C092513:MLLT10 protein, human; C096106:MLLT6 protein, human; D009363:Neoplasm Proteins; D014157:Transcription Factors