登録情報 データベース : EMDB / ID : EMD-6564 構造の表示 ダウンロードとリンクタイトル The cryo-EM structure of yeast spliceosomal U4/U6.U5 tri-snRNP (improved map for Prp31 region at 3.52 A) マップデータReconstruction of tri-snRNP 詳細 試料試料 : U4/U6.U5 tri-snRNP from Saccharomyces cerevisiae細胞器官・細胞要素 : U4/U6.U5 tri-snRNP 詳細 キーワード tri-snRNP (核内低分子リボ核タンパク質) / pre-mRNA splicing機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
spliceosomal conformational changes to generate catalytic conformation / mRNA decay by 5' to 3' exoribonuclease / snoRNA splicing / snoRNA guided rRNA 2'-O-methylation / Lsm1-7-Pat1 complex / U6 snRNP / box C/D sno(s)RNA 3'-end processing / positive regulation of RNA binding / generation of catalytic spliceosome for first transesterification step / deadenylation-dependent decapping of nuclear-transcribed mRNA ... spliceosomal conformational changes to generate catalytic conformation / mRNA decay by 5' to 3' exoribonuclease / snoRNA splicing / snoRNA guided rRNA 2'-O-methylation / Lsm1-7-Pat1 complex / U6 snRNP / box C/D sno(s)RNA 3'-end processing / positive regulation of RNA binding / generation of catalytic spliceosome for first transesterification step / deadenylation-dependent decapping of nuclear-transcribed mRNA / splicing factor binding / spliceosome conformational change to release U4 (or U4atac) and U1 (or U11) / P-body assembly / U4/U6 snRNP / 7-methylguanosine cap hypermethylation / pICln-Sm protein complex / small nuclear ribonucleoprotein complex / sno(s)RNA-containing ribonucleoprotein complex / SMN-Sm protein complex / spliceosomal tri-snRNP complex / U4 snRNA binding / box C/D methylation guide snoRNP complex / commitment complex / U2-type prespliceosome assembly / U2-type catalytic step 2 spliceosome / poly(U) RNA binding / U4 snRNP / U2 snRNP / nuclear-transcribed mRNA catabolic process / U1 snRNP / U3 snoRNA binding / tRNA processing / U2-type prespliceosome / precatalytic spliceosome / spliceosomal complex assembly / Major pathway of rRNA processing in the nucleolus and cytosol / generation of catalytic spliceosome for second transesterification step / mRNA 5'-splice site recognition / mRNA 3'-splice site recognition / spliceosomal tri-snRNP complex assembly / U5 snRNA binding / U5 snRNP / U2 snRNA binding / U6 snRNA binding / spliceosomal snRNP assembly / pre-mRNA intronic binding / U1 snRNA binding / U4/U6 x U5 tri-snRNP complex / maturation of SSU-rRNA from tricistronic rRNA transcript (SSU-rRNA, 5.8S rRNA, LSU-rRNA) / catalytic step 2 spliceosome / maturation of LSU-rRNA / maturation of SSU-rRNA / small-subunit processome / spliceosomal complex / P-body / mRNA splicing, via spliceosome / rRNA processing / metallopeptidase activity / cytosolic large ribosomal subunit / nucleic acid binding / RNA helicase activity / ヘリカーゼ / GTPase activity / mRNA binding / 核小体 / GTP binding / ATP hydrolysis activity / ミトコンドリア / RNA binding / 核質 / ATP binding / identical protein binding / 細胞核 / 細胞質基質 / 細胞質 類似検索 - 分子機能 Sm-like protein Lsm8 / U6 snRNA-associated Sm-like protein Lsm1/8 / Pre-mRNA processing factor 4 (PRP4)-like / U6 snRNA-associated Sm-like protein LSm2 / Sm-like protein Lsm4 / Splicing Factor Motif, present in Prp18 and Pr04 / Sm-like protein Lsm7 / Sm-like protein LSm5 / Sm-like protein Lsm3 / U6 snRNA-associated Sm-like protein Lsm3 ... Sm-like protein Lsm8 / U6 snRNA-associated Sm-like protein Lsm1/8 / Pre-mRNA processing factor 4 (PRP4)-like / U6 snRNA-associated Sm-like protein LSm2 / Sm-like protein Lsm4 / Splicing Factor Motif, present in Prp18 and Pr04 / Sm-like protein Lsm7 / Sm-like protein LSm5 / Sm-like protein Lsm3 / U6 snRNA-associated Sm-like protein Lsm3 / Pre-mRNA-splicing factor 3 / U4/U6 small nuclear ribonucleoprotein Prp3 / pre-mRNA processing factor 3 domain / Prp31 C-terminal / U4/U6 small nuclear ribonucleoprotein Prp31 / Prp31 C terminal domain / Small nuclear ribonucleoprotein Prp3, C-terminal domain / Small nuclear ribonucleoprotein Prp3, C-terminal domain / Dim1 family / Mitosis protein DIM1 / Mitosis protein DIM1 / PRP1 splicing factor, N-terminal / PRP1 splicing factor, N-terminal / Brr2, N-terminal helicase PWI domain / : / N-terminal helicase PWI domain / Pre-mRNA-splicing helicase BRR2 plug domain / H/ACA ribonucleoprotein complex, subunit Nhp2-like / Pre-mRNA-splicing factor Syf1-like / NOSIC / NOSIC (NUC001) domain / Nop domain / Nop domain superfamily / Nop, C-terminal domain / snoRNA binding domain, fibrillarin / Nop domain profile. / Sec63 Brl domain / Snu114, GTP-binding domain / 116kDa U5 small nuclear ribonucleoprotein component, N-terminal / 116kDa U5 small nuclear ribonucleoprotein component, C-terminal / 116 kDa U5 small nuclear ribonucleoprotein component N-terminus / Small nuclear ribonucleoprotein Sm D3 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein F / Sec63 domain / Sec63 Brl domain / Sm-like protein Lsm7/SmG / Like-Sm (LSM) domain containing protein, LSm4/SmD1/SmD3 / Sm-like protein Lsm6/SmF / LSM domain / LSM domain, eukaryotic/archaea-type / snRNP Sm proteins / HAT (Half-A-TPR) repeat / HAT (Half-A-TPR) repeats / : / Sm domain profile. / LSM domain superfamily / Translation elongation factor EFG/EF2, domain IV / Elongation factor G, domain IV / Elongation factor G, domain IV / Elongation factor G C-terminus / Elongation factor EFG, domain V-like / Elongation factor G C-terminus / EF-G domain III/V-like / PROCT domain / Prp8 RNase domain IV, fingers region / PROCT (NUC072) domain / PRO8NT domain / PROCN domain / Pre-mRNA-processing-splicing factor 8, U6-snRNA-binding / Pre-mRNA-processing-splicing factor 8, U5-snRNA-binding / RNA recognition motif, spliceosomal PrP8 / PRP8 domain IV core / Pre-mRNA-processing-splicing factor 8, U5-snRNA-binding domain superfamily / Prp8 RNase domain IV, palm region / PRO8NT (NUC069), PrP8 N-terminal domain / PROCN (NUC071) domain / U6-snRNA interacting domain of PrP8 / U5-snRNA binding site 2 of PrP8 / RNA recognition motif of the spliceosomal PrP8 / PRP8 domain IV core / Pre-mRNA-processing-splicing factor 8 / JAB/MPN domain / JAB1/MPN/MOV34 metalloenzyme domain / MPN domain / MPN domain profile. / Ribosomal protein L7Ae conserved site / Ribosomal protein L7Ae signature. / Translational (tr)-type GTP-binding domain / Elongation factor Tu GTP binding domain / Translational (tr)-type guanine nucleotide-binding (G) domain profile. / Tetratricopeptide repeats / DEAD/DEAH box helicase / DEAD/DEAH box helicase domain / Ribosomal protein L7Ae/L8/Nhp2 family / C2 domain superfamily / Tetratricopeptide repeat / Ribosomal protein L7Ae/L30e/S12e/Gadd45 類似検索 - ドメイン・相同性 Pre-mRNA-splicing factor 6 / U4/U6 small nuclear ribonucleoprotein PRP4 / Pre-mRNA-splicing helicase BRR2 / Pre-mRNA-splicing factor 8 / Pre-mRNA-splicing factor SNU114 / U6 snRNA-associated Sm-like protein LSm2 / 13 kDa ribonucleoprotein-associated protein / Small nuclear ribonucleoprotein-associated protein B / U6 snRNA-associated Sm-like protein LSm4 / U6 snRNA-associated Sm-like protein LSm5 ... Pre-mRNA-splicing factor 6 / U4/U6 small nuclear ribonucleoprotein PRP4 / Pre-mRNA-splicing helicase BRR2 / Pre-mRNA-splicing factor 8 / Pre-mRNA-splicing factor SNU114 / U6 snRNA-associated Sm-like protein LSm2 / 13 kDa ribonucleoprotein-associated protein / Small nuclear ribonucleoprotein-associated protein B / U6 snRNA-associated Sm-like protein LSm4 / U6 snRNA-associated Sm-like protein LSm5 / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D3 / U6 snRNA-associated Sm-like protein LSm8 / Pre-mRNA-processing factor 31 / U6 snRNA-associated Sm-like protein LSm7 / Small nuclear ribonucleoprotein F / U6 snRNA-associated Sm-like protein LSm3 / Small nuclear ribonucleoprotein Sm D1 / U4/U6 small nuclear ribonucleoprotein PRP3 / Small nuclear ribonucleoprotein Sm D2 / U6 snRNA-associated Sm-like protein LSm6 / Spliceosomal protein DIB1 / Small nuclear ribonucleoprotein E 類似検索 - 構成要素生物種 Saccharomyces cerevisiae (パン酵母)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.52 Å 詳細 データ登録者Wan R / Yan C / Bai R / Wang L / Huang M / Wong C / Shi Y 引用ジャーナル : Science / 年 : 2016タイトル : The 3.8 Å structure of the U4/U6.U5 tri-snRNP: Insights into spliceosome assembly and catalysis.著者 : Ruixue Wan / Chuangye Yan / Rui Bai / Lin Wang / Min Huang / Catherine C L Wong / Yigong Shi / 要旨 : Splicing of precursor messenger RNA is accomplished by a dynamic megacomplex known as the spliceosome. Assembly of a functional spliceosome requires a preassembled U4/U6.U5 tri-snRNP complex, which ... Splicing of precursor messenger RNA is accomplished by a dynamic megacomplex known as the spliceosome. Assembly of a functional spliceosome requires a preassembled U4/U6.U5 tri-snRNP complex, which comprises the U5 small nuclear ribonucleoprotein (snRNP), the U4 and U6 small nuclear RNA (snRNA) duplex, and a number of protein factors. Here we report the three-dimensional structure of a Saccharomyces cerevisiae U4/U6.U5 tri-snRNP at an overall resolution of 3.8 angstroms by single-particle electron cryomicroscopy. The local resolution for the core regions of the tri-snRNP reaches 3.0 to 3.5 angstroms, allowing construction of a refined atomic model. Our structure contains U5 snRNA, the extensively base-paired U4/U6 snRNA, and 30 proteins including Prp8 and Snu114, which amount to 8495 amino acids and 263 nucleotides with a combined molecular mass of ~1 megadalton. The catalytic nucleotide U80 from U6 snRNA exists in an inactive conformation, stabilized by its base-pairing interactions with U4 snRNA and protected by Prp3. Pre-messenger RNA is bound in the tri-snRNP through base-pairing interactions with U6 snRNA and loop I of U5 snRNA. This structure, together with that of the spliceosome, reveals the molecular choreography of the snRNAs in the activation process of the spliceosomal ribozyme. 履歴 登録 2015年12月23日 - ヘッダ(付随情報) 公開 2016年2月10日 - マップ公開 2016年2月10日 - 更新 2016年2月10日 - 現状 2016年2月10日 処理サイト : PDBj / 状態 : 公開
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