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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 8dmb | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Structure of Desulfovirgula thermocuniculi IsrB (DtIsrB) in complex with omega RNA and target DNA | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | RNA BINDING PROTEIN/RNA/DNA / Endonuclease / RNA BINDING PROTEIN / RNA BINDING PROTEIN-RNA-DNA complex / Transposon / CRISPR / IS200/IS605 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() SUMO is conjugated to E1 (UBA2:SAE1) / SUMOylation of nuclear envelope proteins / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / SUMO is proteolytically processed / SUMOylation of transcription factors / SUMOylation of transcription cofactors / Postmitotic nuclear pore complex (NPC) reformation / septin ring / SUMOylation of DNA damage response and repair proteins / Transcriptional and post-translational regulation of MITF-M expression and activity ...SUMO is conjugated to E1 (UBA2:SAE1) / SUMOylation of nuclear envelope proteins / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / SUMO is proteolytically processed / SUMOylation of transcription factors / SUMOylation of transcription cofactors / Postmitotic nuclear pore complex (NPC) reformation / septin ring / SUMOylation of DNA damage response and repair proteins / Transcriptional and post-translational regulation of MITF-M expression and activity / SUMOylation of DNA replication proteins / SUMOylation of SUMOylation proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / SUMOylation of RNA binding proteins / SUMOylation of chromatin organization proteins / ubiquitin-like protein ligase binding / protein sumoylation / condensed nuclear chromosome / protein tag activity / identical protein binding / nucleus 類似検索 - 分子機能 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
生物種 | ![]() ![]() ![]() synthetic construct (人工物) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 3.1 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Seiichi, H. / Kappel, K. / Zhang, F. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of the OMEGA nickase IsrB in complex with ωRNA and target DNA. 著者: Seiichi Hirano / Kalli Kappel / Han Altae-Tran / Guilhem Faure / Max E Wilkinson / Soumya Kannan / F Esra Demircioglu / Rui Yan / Momoko Shiozaki / Zhiheng Yu / Kira S Makarova / Eugene V ...著者: Seiichi Hirano / Kalli Kappel / Han Altae-Tran / Guilhem Faure / Max E Wilkinson / Soumya Kannan / F Esra Demircioglu / Rui Yan / Momoko Shiozaki / Zhiheng Yu / Kira S Makarova / Eugene V Koonin / Rhiannon K Macrae / Feng Zhang / ![]() 要旨: RNA-guided systems, such as CRISPR-Cas, combine programmable substrate recognition with enzymatic function, a combination that has been used advantageously to develop powerful molecular technologies. ...RNA-guided systems, such as CRISPR-Cas, combine programmable substrate recognition with enzymatic function, a combination that has been used advantageously to develop powerful molecular technologies. Structural studies of these systems have illuminated how the RNA and protein jointly recognize and cleave their substrates, guiding rational engineering for further technology development. Recent work identified a new class of RNA-guided systems, termed OMEGA, which include IscB, the likely ancestor of Cas9, and the nickase IsrB, a homologue of IscB lacking the HNH nuclease domain. IsrB consists of only around 350 amino acids, but its small size is counterbalanced by a relatively large RNA guide (roughly 300-nt ωRNA). Here, we report the cryogenic-electron microscopy structure of Desulfovirgula thermocuniculi IsrB (DtIsrB) in complex with its cognate ωRNA and a target DNA. We find the overall structure of the IsrB protein shares a common scaffold with Cas9. In contrast to Cas9, however, which uses a recognition (REC) lobe to facilitate target selection, IsrB relies on its ωRNA, part of which forms an intricate ternary structure positioned analogously to REC. Structural analyses of IsrB and its ωRNA as well as comparisons to other RNA-guided systems highlight the functional interplay between protein and RNA, advancing our understanding of the biology and evolution of these diverse systems. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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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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ダウンロード
PDBx/mmCIF形式 | ![]() | 370.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 281.4 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 25.3 KB | 表示 | |
CIF形式データ | ![]() | 40.1 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 27533MC 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: 84080.859 Da / 分子数: 1 / 変異: H584L / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() 株: ATCC 204508 / S288c / 遺伝子: SMT3, YDR510W, D9719.15 / 発現宿主: ![]() ![]() | ||||||
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#2: RNA鎖 | 分子量: 91748.258 Da / 分子数: 1 / 由来タイプ: 合成 由来: (合成) ![]() | ||||||
#3: DNA鎖 | 分子量: 9593.223 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) | ||||||
#4: DNA鎖 | 分子量: 3075.026 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) | ||||||
#5: 化合物 | 研究の焦点であるリガンドがあるか | Y | Has protein modification | N | 配列の詳細 | Chimeric construct consisting of initiating methionine (residue -149) followed by an expression tag ...Chimeric construct consisting of initiating methionine (residue -149) followed by an expression tag from -148 to -99, followed by protein SMT3 (-98 to -1), then a linker resdiue (0), then IsrB protein (residues 1 to 353), a linker from residues 354 to 355, and then msfGFP from 356 to 591. Residue 584 (in the msfGFP) was mutated from His to Leu during cloning. | |
-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: DtIsrB-wRNA-tgDNA complex / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: MULTIPLE SOURCES |
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分子量 | 実験値: NO |
緩衝液 | pH: 7 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
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 / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 1.2 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 58188 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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