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Structural basis of core promoter recognition in a primitive eukaryote.

Publication ,  Journal Article
Schumacher, MA; Lau, AOT; Johnson, PJ
Published in: Cell
November 14, 2003

Transcription start site selection in eukaryotes is mediated through combinations of the TATA, initiator (Inr), and downstream promoter elements (DPE). In Trichomonas vaginalis, a parabasalian flagellate thought to represent an ancient eukaryote lineage, the Inr appears to be solely responsible for start site selection and is recognized by the initiator binding protein 39 kDa (IBP39). IBP39 contains an N-terminal Inr binding domain (IBD) connected via a flexible linker to a C-terminal domain (C domain). Here we present crystal structures of the apoIBD and IBD-Inr complexes and the C domain. The IBD structures reveal a winged-helix motif with prokaryotic and eukaryotic features and a scaffold similar to that of ETS-family proteins. The C domain structure and biochemical studies indicate that it interacts with the T. vaginalis RNAP II large subunit C-terminal domain. These data suggest that binding of IBP39 to the Inr directly recruits RNAP II and in this way initiates transcription.

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Published In

Cell

DOI

ISSN

0092-8674

Publication Date

November 14, 2003

Volume

115

Issue

4

Start / End Page

413 / 424

Location

United States

Related Subject Headings

  • Trichomonas vaginalis
  • Transcription Initiation Site
  • Substrate Specificity
  • RNA Polymerase II
  • Protozoan Proteins
  • Protein Subunits
  • Protein Structure, Tertiary
  • Protein Binding
  • Promoter Regions, Genetic
  • Prokaryotic Cells
 

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Schumacher, M. A., Lau, A. O. T., & Johnson, P. J. (2003). Structural basis of core promoter recognition in a primitive eukaryote. Cell, 115(4), 413–424. https://doi.org/10.1016/s0092-8674(03)00887-0
Schumacher, Maria A., Audrey O. T. Lau, and Patricia J. Johnson. “Structural basis of core promoter recognition in a primitive eukaryote.Cell 115, no. 4 (November 14, 2003): 413–24. https://doi.org/10.1016/s0092-8674(03)00887-0.
Schumacher MA, Lau AOT, Johnson PJ. Structural basis of core promoter recognition in a primitive eukaryote. Cell. 2003 Nov 14;115(4):413–24.
Schumacher, Maria A., et al. “Structural basis of core promoter recognition in a primitive eukaryote.Cell, vol. 115, no. 4, Nov. 2003, pp. 413–24. Pubmed, doi:10.1016/s0092-8674(03)00887-0.
Schumacher MA, Lau AOT, Johnson PJ. Structural basis of core promoter recognition in a primitive eukaryote. Cell. 2003 Nov 14;115(4):413–424.
Journal cover image

Published In

Cell

DOI

ISSN

0092-8674

Publication Date

November 14, 2003

Volume

115

Issue

4

Start / End Page

413 / 424

Location

United States

Related Subject Headings

  • Trichomonas vaginalis
  • Transcription Initiation Site
  • Substrate Specificity
  • RNA Polymerase II
  • Protozoan Proteins
  • Protein Subunits
  • Protein Structure, Tertiary
  • Protein Binding
  • Promoter Regions, Genetic
  • Prokaryotic Cells