+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8y6u | ||||||
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タイトル | Cryo-EM structure of E.coli transcription initiation complex with transcription factor GcvA | ||||||
要素 |
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キーワード | TRANSCRIPTION/DNA / RNA polymerase / TRANSCRIPTION-DNA COMPLEX | ||||||
機能・相同性 | 機能・相同性情報 RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility / nitrate assimilation / response to UV ...RNA polymerase complex / submerged biofilm formation / cellular response to cell envelope stress / cytosolic DNA-directed RNA polymerase complex / regulation of DNA-templated transcription initiation / sigma factor activity / bacterial-type flagellum assembly / bacterial-type flagellum-dependent cell motility / nitrate assimilation / response to UV / transcription elongation factor complex / regulation of DNA-templated transcription elongation / transcription antitermination / DNA-templated transcription initiation / cell motility / ribonucleoside binding / DNA-directed 5'-3' RNA polymerase activity / DNA-directed RNA polymerase / response to heat / protein-containing complex assembly / sequence-specific DNA binding / intracellular iron ion homeostasis / protein dimerization activity / DNA-binding transcription factor activity / response to antibiotic / DNA-templated transcription / regulation of DNA-templated transcription / magnesium ion binding / DNA binding / zinc ion binding / membrane / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能 | ||||||
生物種 | Escherichia coli K-12 (大腸菌) Escherichia coli (大腸菌) | ||||||
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: 3.97 Å | ||||||
データ登録者 | Lin, W. / Shi, J. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Biochem Biophys Res Commun / 年: 2024 タイトル: NMR analysis of a loop-bulge structure of UUCGA pentaloop. 著者: Rika Ichijo / Gota Kawai / 要旨: Although structures of many RNA loops, such as GNRA and UNCG tetraloops, were well known, it is still possible to find more RNA structures. In the present study, solution structure of an RNA fragment ...Although structures of many RNA loops, such as GNRA and UNCG tetraloops, were well known, it is still possible to find more RNA structures. In the present study, solution structure of an RNA fragment having UUCGA pentaloop was analyzed by NMR spectroscopy. It was found that the UUCG tetraloop is formed and the adenosine residue at the 3' side of the tetraloop is bulged out. The characteristic motif of the loop-bulge structure has also been found in other RNAs including CUUGU and CUGGC pentaloops. Along with the recently found T-hairpin structure with a UUUGAUU loop, in which UUUGA pentaloop and UU bulge are formed, the loop-bulge structures can be categorized as an RNA motif and it may be called as the integrated structure loop, I-loop. #1: ジャーナル: Protein Sci / 年: 2024 タイトル: Structural and functional insights into transcription activation of the essential LysR-type transcriptional regulators. 著者: Jing Shi / Zhenzhen Feng / Qian Song / Fulin Wang / Zhipeng Zhang / Jian Liu / Fangfang Li / Aijia Wen / Tianyu Liu / Zonghang Ye / Chao Zhang / Kalyan Das / Shuang Wang / Yu Feng / Wei Lin / 要旨: The enormous LysR-type transcriptional regulators (LTTRs), which are diversely distributed amongst prokaryotes, play crucial roles in transcription regulation of genes involved in basic metabolic ...The enormous LysR-type transcriptional regulators (LTTRs), which are diversely distributed amongst prokaryotes, play crucial roles in transcription regulation of genes involved in basic metabolic pathways, virulence and stress resistance. However, the precise transcription activation mechanism of these genes by LTTRs remains to be explored. Here, we determine the cryo-EM structure of a LTTR-dependent transcription activation complex comprising of Escherichia coli RNA polymerase (RNAP), an essential LTTR protein GcvA and its cognate promoter DNA. Structural analysis shows two N-terminal DNA binding domains of GcvA (GcvA_DBD) dimerize and engage the GcvA activation binding sites, presenting the -35 element for specific recognition with the conserved σR4. In particular, the versatile C-terminal domain of α subunit of RNAP directly interconnects with GcvA_DBD, σR4 and promoter DNA, providing more interfaces for stabilizing the complex. Moreover, molecular docking supports glycine as one potential inducer of GcvA, and single molecule photobleaching experiments kinetically visualize the occurrence of tetrameric GcvA-engaged transcription activation complex as suggested for the other LTTR homologs. Thus, a general model for tetrameric LTTR-dependent transcription activation is proposed. These findings will provide new structural and functional insights into transcription activation of the essential LTTRs. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8y6u.cif.gz | 785.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8y6u.ent.gz | 表示 | PDB形式 | |
PDBx/mmJSON形式 | 8y6u.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 8y6u_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8y6u_full_validation.pdf.gz | 1.6 MB | 表示 | |
XML形式データ | 8y6u_validation.xml.gz | 108.8 KB | 表示 | |
CIF形式データ | 8y6u_validation.cif.gz | 168.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/y6/8y6u ftp://data.pdbj.org/pub/pdb/validation_reports/y6/8y6u | HTTPS FTP |
-関連構造データ
関連構造データ | 39001MC 8k8bC 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-タンパク質 , 2種, 3分子 HJF
#1: タンパク質 | 分子量: 34447.500 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli K-12 (大腸菌) / 株: K-12 / 遺伝子: gcvA / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 株 (発現宿主): BL21(DE3) / 参照: UniProt: P0A9F6 #8: タンパク質 | | 分子量: 70352.242 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli (大腸菌) / 遺伝子: rpoD, GHR40_08205, NCTC12650_00972 / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: Q0P6L9 |
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-DNA鎖 , 2種, 2分子 12
#2: DNA鎖 | 分子量: 28330.164 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli (大腸菌) / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) |
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#3: DNA鎖 | 分子量: 28584.369 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli (大腸菌) / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 株 (発現宿主): BL21(DE3) |
-DNA-directed RNA polymerase subunit ... , 4種, 6分子 ABICDE
#4: タンパク質 | 分子量: 36558.680 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli (大腸菌) / 遺伝子: rpoA / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 参照: UniProt: P0A7Z4, DNA-directed RNA polymerase #5: タンパク質 | | 分子量: 150804.922 Da / 分子数: 1 / Mutation: D516V / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli K-12 (大腸菌) / 株: K-12 / 遺伝子: rpoB / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 株 (発現宿主): BL21(DE3) / 参照: UniProt: P0A8V2, DNA-directed RNA polymerase #6: タンパク質 | | 分子量: 155366.781 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli K-12 (大腸菌) / 株: K-12 / 遺伝子: rpoC / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 株 (発現宿主): BL21(DE3) / 参照: UniProt: P0A8T7, DNA-directed RNA polymerase #7: タンパク質 | | 分子量: 10249.547 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Escherichia coli K-12 (大腸菌) / 株: K-12 / 遺伝子: rpoZ / 発現宿主: Escherichia coli BL21(DE3) (大腸菌) / 株 (発現宿主): BL21(DE3) / 参照: UniProt: P0A800, DNA-directed RNA polymerase |
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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 |
-試料調製
構成要素 | 名称: E.coli transcription initiation complex with GcvA / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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由来(天然) | 生物種: Escherichia coli K-12 (大腸菌) / 株: K-12 |
由来(組換発現) | 生物種: Escherichia coli BL21(DE3) (大腸菌) / 株: BL21(DE3) |
緩衝液 | pH: 7.9 |
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 |
-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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 3000 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 52 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 3.97 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 583044 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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