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基本情報
登録情報 | データベース: PDB / ID: 8uuz | ||||||
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タイトル | Campylobacter jejuni CosR apo form | ||||||
![]() | DNA-binding response regulator | ||||||
![]() | DNA BINDING PROTEIN / Campylobacter jejuni / CosR / transcriptional regulator | ||||||
機能・相同性 | ![]() phosphorelay response regulator activity / protein-DNA complex / transcription cis-regulatory region binding / regulation of DNA-templated transcription / cytosol 類似検索 - 分子機能 | ||||||
生物種 | ![]() ![]() | ||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.77 Å | ||||||
![]() | Zhang, Z. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of DNA recognition of the CosR regulator. 著者: Zhemin Zhang / Yuqi Yan / Jinji Pang / Lei Dai / Qijing Zhang / Edward W Yu / ![]() 要旨: is a foodborne pathogen commonly found in the intestinal tracts of animals. This pathogen is a leading cause of gastroenteritis in humans. Besides its highly infectious nature, is increasingly ... is a foodborne pathogen commonly found in the intestinal tracts of animals. This pathogen is a leading cause of gastroenteritis in humans. Besides its highly infectious nature, is increasingly resistant to a number of clinically administrated antibiotics. As a consequence, the Centers for Disease Control and Prevention has designated antibiotic-resistant as a serious antibiotic resistance threat in the United States. The CosR regulator is essential to the viability of this bacterium and is responsible for regulating the expression of a number of oxidative stress defense enzymes. Importantly, it also modulates the expression of the CmeABC multidrug efflux system, the most predominant and clinically important system in that mediates resistance to multiple antimicrobials. Here, we report structures of apo-CosR and CosR bound with a 21 bp DNA sequence located at the promotor region using both single-particle cryo-electron microscopy and X-ray crystallography. These structures allow us to propose a novel mechanism for CosR regulation that involves a long-distance conformational coupling and rearrangement of the secondary structural elements of the regulator to bind target DNA. IMPORTANCE: has emerged as an antibiotic-resistant threat worldwide. CosR is an essential regulator for this bacterium and is important for adaptation to various stresses. Here, we describe the ...IMPORTANCE: has emerged as an antibiotic-resistant threat worldwide. CosR is an essential regulator for this bacterium and is important for adaptation to various stresses. Here, we describe the structural basis of CosR binding to target DNA as determined by cryo-electron microscopy and X-ray crystallography. Since CosR is a potential target for intervention, our studies may facilitate the development of novel therapeutics to combat infection. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 120.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 92.3 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 42602MC ![]() 8uvkC ![]() 8uvxC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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要素
#1: タンパク質 | 分子量: 25561.270 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: hsrA / 発現宿主: ![]() ![]() |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: CosR / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 165000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 54.6 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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粒子像の選択 | 選択した粒子像数: 1504675 |
3次元再構成 | 解像度: 3.77 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 31260 / 対称性のタイプ: POINT |