- EMDB-2898: Structures of the CRISPR-Cmr complex reveal mode of RNA target po... -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-2898
タイトル
Structures of the CRISPR-Cmr complex reveal mode of RNA target positioning
マップデータ
Reconstruction of intact apo CRISPR-Cas complex
試料
試料: apo CRISPR-Cmr complex
タンパク質・ペプチド: CRISPR-associated protein TM1791
タンパク質・ペプチド: CRISPR system Cmr subunit Cmr5
タンパク質・ペプチド: CRISPR-associated protein Cmr3
タンパク質・ペプチド: CRISPR-associated protein Crm2
タンパク質・ペプチド: CRISPR-associated RAMP Cmr4
タンパク質・ペプチド: CRISPR-associated protein TM1795
RNA: CRISPR RNA
キーワード
CRISPR-Cas
機能・相同性
機能・相同性情報
regulation of defense response to virus / defense response to virus / cytoplasm 類似検索 - 分子機能
CRISPR-associated protein (Cas_Cmr5) / CRISPR-associated protein, TM1791 / CRISPR-associated protein, TM1791 / CRISPR-associated protein TM1795 / CRISPR-associated protein TM1795 / CRISPR-associated protein, Cmr3 / CRISPR-associated protein, Cmr3 / CRISPR-associated protein (Cas_Cmr3) / CRISPR-associated protein, Cmr5 / CRISPR-associated RAMP Cmr4 ...CRISPR-associated protein (Cas_Cmr5) / CRISPR-associated protein, TM1791 / CRISPR-associated protein, TM1791 / CRISPR-associated protein TM1795 / CRISPR-associated protein TM1795 / CRISPR-associated protein, Cmr3 / CRISPR-associated protein, Cmr3 / CRISPR-associated protein (Cas_Cmr3) / CRISPR-associated protein, Cmr5 / CRISPR-associated RAMP Cmr4 / CRISPR-associated protein, Cmr5 / CRISPR-associated RAMP Cmr4 / AF1862-like domain superfamily / CRISPR-associated protein Cmr2 / CRISPR-associated protein Cmr2 / CRISPR-associated protein Cmr2, N-terminal / CRISPR-Cas system, Cmr2 subunit, D1 domain, cysteine cluster / CRISPR-associated protein Cmr2, N-terminal / Cas10/Cmr2, second palm domain / CRISPR type III-associated protein / RAMP superfamily / GGDEF domain profile. / GGDEF domain / Reverse transcriptase/Diguanylate cyclase domain 類似検索 - ドメイン・相同性
Type III-B CRISPR module RAMP protein Cmr6 / CRISPR system Cmr subunit Cmr5 / Type III-B CRISPR module RAMP protein Cmr4 / Type III-B CRISPR module RAMP protein Cmr1 / CRISPR-associated protein Cmr3 / GGDEF domain-containing protein 類似検索 - 構成要素
ジャーナル: Science / 年: 2015 タイトル: Structural biology. Structures of the CRISPR-Cmr complex reveal mode of RNA target positioning. 著者: David W Taylor / Yifan Zhu / Raymond H J Staals / Jack E Kornfeld / Akeo Shinkai / John van der Oost / Eva Nogales / Jennifer A Doudna / 要旨: Adaptive immunity in bacteria involves RNA-guided surveillance complexes that use CRISPR (clustered regularly interspaced short palindromic repeats)-associated (Cas) proteins together with CRISPR ...Adaptive immunity in bacteria involves RNA-guided surveillance complexes that use CRISPR (clustered regularly interspaced short palindromic repeats)-associated (Cas) proteins together with CRISPR RNAs (crRNAs) to target invasive nucleic acids for degradation. Whereas type I and type II CRISPR-Cas surveillance complexes target double-stranded DNA, type III complexes target single-stranded RNA. Near-atomic resolution cryo-electron microscopy reconstructions of native type III Cmr (CRISPR RAMP module) complexes in the absence and presence of target RNA reveal a helical protein arrangement that positions the crRNA for substrate binding. Thumblike β hairpins intercalate between segments of duplexed crRNA:target RNA to facilitate cleavage of the target at 6-nucleotide intervals. The Cmr complex is architecturally similar to the type I CRISPR-Cascade complex, suggesting divergent evolution of these immune systems from a common ancestor.
UniProtKB: Type III-B CRISPR module RAMP protein Cmr4 / InterPro: CRISPR-associated RAMP Cmr4
-
分子 #7: CRISPR-associated protein TM1795
分子
名称: CRISPR-associated protein TM1795 / タイプ: protein_or_peptide / ID: 7 / Name.synonym: Cmr1, TTHB162 / コピー数: 1 / 組換発現: No
由来(天然)
生物種: Thermus thermophilus (バクテリア)
分子量
実験値: 44 KDa
配列
UniProtKB: Type III-B CRISPR module RAMP protein Cmr1 / InterPro: CRISPR-associated protein TM1795
-
分子 #2: CRISPR RNA
分子
名称: CRISPR RNA / タイプ: rna / ID: 2 / Name.synonym: crRNA / 詳細: 46 nucleotide endogenous crRNA bound to complex / 分類: OTHER / Structure: SINGLE STRANDED / Synthetic?: No
由来(天然)
生物種: Thermus thermophilus (バクテリア)
-
実験情報
-
構造解析
手法
クライオ電子顕微鏡法
解析
単粒子再構成法
試料の集合状態
particle
-
試料調製
濃度
1.0 mg/mL
緩衝液
pH: 8 / 詳細: 20 mM Tris-HCl, pH 8.0, 150 mM NaCl
グリッド
詳細: 4/2 C-flat grids with a thin-layer of carbon over the holes
凍結
凍結剤: ETHANE / チャンバー内湿度: 100 % / チャンバー内温度: 100 K / 装置: FEI VITROBOT MARK IV 手法: Grids were rapidly plunged into liquid ethane using an FEI Vitrobot MarkIV maintained at 4 degrees C after being blotted for 4-4.5 seconds with a blotting force of 15-20.
-
電子顕微鏡法
顕微鏡
FEI TITAN KRIOS
アライメント法
Legacy - 非点収差: Objective astigmatism was corrected at 210,000 times magnification
詳細
Data acquired using Leginon. We collected a 6 s exposure fractionated into 20, 300 ms frames with a dose of 8 electrons per square Angstrom per second.