LOCALIZATION OF THE HUMAN RNA-POLYMERASE-I TRANSCRIPTION FACTOR GENE (UBTF) TO THE D17S183 LOCUS ON CHROMOSOME 17Q21 AND CONSTRUCTION OF A LONG-RANGE RESTRICTION MAP OF THE REGION

Human upstream binding factor (hUBF) is a sequence-specific DNA-bindin g protein that is essential for the activation of human 18s and 28s rR NA gene transcription. We have isolated and localized the gene (UBTF) encoding hUBF to the D17S183 locus on chromosome 17q21 by analyzing a cosmid from the region and carrying out Southern analysis on a previou sly constructed chromosome 17 somatic cell hybrid mapping panel using a probe from the hUBF cDNA. Confirmation of its location at this regio n was obtained from the results of pulsed-field gel electrophoresis an alysis of genomic DNA using the hUBF cDNA and other probes from the re gion. These data also enabled the construction of a long-range restric tion map of the region. (C) 1995 Academic Press, Inc.