SGD Paper Help


Page Contents:
Zhang L, et al.  (2009) Structural evidence for consecutive Hel308-like modules in the spliceosomal ATPase Brr2. Nat Struct Mol Biol 16(7):731-9

Abstract: Brr2 is a DExD/H-box helicase responsible for U4/U6 unwinding during spliceosomal activation. Brr2 contains two helicase-like domains, each of which is followed by a Sec63 domain with unknown function. We determined the crystal structure of the second Sec63 domain, which unexpectedly resembles domains 4 and 5 of DNA helicase Hel308. This, together with sequence similarities between Brr2's helicase-like domains and domains 1-3 of Hel308, led us to hypothesize that Brr2 contains two consecutive Hel308-like modules (Hel308-I and Hel308-II). Our structural model and mutagenesis data suggest that Brr2 shares a similar helicase mechanism with Hel308. We demonstrate that Hel308-II interacts with Prp8 and Snu114 in vitro and in vivo. We further find that the C-terminal region of Prp8 (Prp8-CTR) facilitates the binding of the Brr2-Prp8-CTR complex to U4/U6. Our results have important implications for the mechanism and regulation of Brr2's activity in splicing.

Status: Published Type: Journal Article | Research Support, N.I.H., Extramural | Research Support, Non-U.S. Gov't PubMed ID: 19525970

Topics addressed in this paper

Number of different genes curated to this paper: 5

  • To find other papers on a gene and topic, click on the colored ball in the appropriate box.
  • displays other papers with information about that topic for that gene.
  • displays other papers in SGD that are associated with that topic.
    The topic is addressed in these papers but does not describe a specific gene or chromosomal feature.
  • To go to the Locus page for a gene, click on the gene name.
Topics Genes linked to topics
BRR2 PRP8 SNR14 SNR6 SNU114
Additional Literature blue ball blue ball blue ball
Alias blue ball blue ball
Function/Process blue ball blue ball
Mutants/Phenotypes blue ball
Primary Literature blue ball blue ball
Protein Sequence Features blue ball blue ball
Protein-Nucleic Acid Interactions blue ball blue ball blue ball blue ball
Protein-protein Interactions blue ball blue ball blue ball
Protein/Nucleic Acid Structure blue ball
Regulatory Role blue ball
Strains/Constructs blue ball blue ball blue ball
Substrates/Ligands/Cofactors blue ball

Author Searches

To find contact information or other publications by the authors of this paper, follow these three steps:
  1. (1) Choose an author,
  2. (2) Choose a search parameter,
  3. (3) Click to implement
Page Contents: