Bdp1 interacts with SNAPc bound to a U6, but not U1, snRNA gene promoter element to establish a stable protein‐DNA complex. Issue 14 (5th July 2018)

• Record Type: Journal Article
• Authors: Verma, Neha; Hurlburt, Ann Marie; Wolfe, Angela; Kim, Mun Kyoung; Kang, Yoon Soon; Kang, Jin Joo; Stumph, William E.
• Is Part Of: FEBS letters. Volume 592:Issue 14(2018)
• Page Start: 2489
• Page End: 2498
• Publication Date: 2018-07-05
• Subjects: Bdp1 -- proximal sequence element -- RNA polymerase specificity -- snRNA‐activating protein complex -- snRNA gene transcription; Biochemistry -- Periodicals; Biophysics -- Periodicals; Molecular biology -- Periodicals; Biochimie -- Périodiques; Biochemistry; Biophysics; Molecular biology; Periodicals; 572.05
• DOI: 10.1002/1873-3468.13169
• Languages: English
• ISSNs: 0014-5793

Abstract

Abstract : In metazoans, U6 small nuclear RNA (snRNA) gene promoters utilize a proximal sequence element (PSE) recognized by the small nuclear RNA‐activating protein complex (SNAPc). SNAPc interacts with the transcription factor TFIIIB, which consists of the subunits TBP, Brf1 (Brf2 in vertebrates), and Bdp1. Here, we show that, in Drosophila melanogaster, DmSNAPc directly recruits Bdp1 to the U6 promoter, and we identify an 87‐residue region of Bdp1 involved in this interaction. Importantly, Bdp1 recruitment requires that DmSNAPc be bound to a U6 PSE rather than a U1 PSE. This is consistent with the concept that DmSNAPc adopts different conformations on U6 and U1 PSEs, which lead to the subsequent recruitment of distinct general transcription factors and RNA polymerases for U6 and U1 gene transcription. Abstract :