3F52

Crystal structure of the clp gene regulator ClgR from C. glutamicum

3F52 の概要

• エントリーDOI: 10.2210/pdb3f52/pdb
• 関連するPDBエントリー: 3F51
• 分子名称: clp gene regulator (ClgR), GLYCEROL (3 entities in total)
• 機能のキーワード: gene regulator, helix-turn-helix motif, transcriptional activator, human pathogen, transcription activator
• 由来する生物種: Corynebacterium glutamicum (Brevibacterium flavum)
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 25755.26

構造登録者

Russo, S.,Schweitzer, J.E.,Polen, T.,Bott, M.,Pohl, E. (登録日: 2008-11-03, 公開日: 2008-11-18, 最終更新日: 2023-09-06)

主引用文献

Russo, S.,Schweitzer, J.E.,Polen, T.,Bott, M.,Pohl, E.
Crystal structure of the caseinolytic protease gene regulator, a transcriptional activator in actinomycetes
J.Biol.Chem., 284:5208-5216, 2009

PubMed Abstract: Human pathogens of the genera Corynebacterium and Mycobacterium possess the transcriptional activator ClgR (clp gene regulator) which in Corynebacterium glutamicum has been shown to regulate the expression of the ClpCP protease genes. ClgR specifically binds to pseudo-palindromic operator regions upstream of clpC and clpP1P2. Here, we present the first crystal structure of a ClgR protein from C. glutamicum. The structure was determined from two different crystal forms to resolutions of 1.75 and 2.05 A, respectively. ClgR folds into a five-helix bundle with a helix-turn-helix motif typical for DNA-binding proteins. Upon dimerization the two DNA-recognition helices are arranged opposite to each other at the protein surface in a distance of approximately 30 A, which suggests that they bind into two adjacent major grooves of B-DNA in an anti-parallel manner. A binding pocket is situated at a strategic position in the dimer interface and could possess a regulatory role altering the positions of the DNA-binding helices.

PubMed: 19019826
DOI: 10.1074/jbc.M806591200

実験手法

X-RAY DIFFRACTION (1.75 Å)