1UMQ

solution structure and DNA binding of the effector domain from the global regulator PrrA(RegA) from R. sphaeroides: Insights into DNA binding specificity

1UMQ の概要

• エントリーDOI: 10.2210/pdb1umq/pdb
• NMR情報: BMRB: 5920
• 分子名称: PHOTOSYNTHETIC APPARATUS REGULATORY PROTEIN (1 entity in total)
• 機能のキーワード: dna-binding protein, response regulator, dna binding domain, helix-turn-helix, sensory transduction, phosphorylation, transcription regulation, dna-binding, activator, dna binding protein
• 由来する生物種: RHODOBACTER SPHAEROIDES
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 9482.88

構造登録者

Laguri, C.,Phillips-Jones, M.K.,Williamson, M.P. (登録日: 2003-08-28, 公開日: 2003-11-21, 最終更新日: 2024-06-19)

主引用文献

Laguri, C.,Phillips-Jones, M.K.,Williamson, M.P.
Solution Structure and DNA Binding of the Effector Domain from the Global Regulator Prra(Rega) from Rhodobacter Sphaeroides: Insights Into DNA Binding Specificity
Nucleic Acids Res., 31:6778-, 2003

PubMed Abstract: Prr/RegA response regulator is a global transcription regulator in purple bacteria Rhodobacter sphaeroides and Rhodobacter capsulatus, and is essential in controlling the metabolic changes between aerobic and anaerobic environments. We report here the structure determination by NMR of the C-terminal effector domain of PrrA, PrrAC. It forms a three-helix bundle containing a helix-turn-helix DNA binding motif. The fold is similar to FIS protein, but the domain architecture is different from previously characterised response regulator effector domains, as it is shorter than any characterised so far. Alignment of Prr/RegA DNA targets permitted a refinement of the consensus sequence, which contains two GCGNC inverted repeats with variable half-site spacings. NMR titrations of PrrAC with specific and non-specific DNA show which surfaces are involved in DNA binding and suggest residues important for binding specificity. A model of the PrrAC/DNA complex was constructed in which two PrrAC molecules are bound to DNA in a symmetrical manner.

PubMed: 14627811
DOI: 10.1093/NAR/GKG891

実験手法

SOLUTION NMR