- PDB-9qeq: Structure of the transcribing Pol II-DSIF-SPT6-U1 snRNP complex -
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基本情報
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データベース: PDB / ID: 9qeq
タイトル
Structure of the transcribing Pol II-DSIF-SPT6-U1 snRNP complex
要素
(DNA-directed RNA polymerase ...) x 7
(DNA-directed RNA polymerases I, II, and III subunit ...) x 3
(RNA polymerase ...) x 2
(Small nuclear ribonucleoprotein ...) x 6
(Transcription elongation factor ...) x 3
(U1 small nuclear ribonucleoprotein ...) x 2
Non-template DNA
Pre-mRNA
Small nuclear ribonucleoprotein-associated protein
Template DNA
U1 snRNA
キーワード
SPLICING / Transcription / elongation / cryo-EM
機能・相同性
機能・相同性情報
negative regulation of protein refolding / regulation of isotype switching / negative regulation of DNA-templated transcription, elongation / regulation of muscle cell differentiation / regulation of ATP-dependent activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / DSIF complex ...negative regulation of protein refolding / regulation of isotype switching / negative regulation of DNA-templated transcription, elongation / regulation of muscle cell differentiation / regulation of ATP-dependent activity / U2 snRNP binding / U7 snRNA binding / histone pre-mRNA DCP binding / U7 snRNP / DSIF complex / histone pre-mRNA 3'end processing complex / regulation of transcription elongation by RNA polymerase II / SLBP independent Processing of Histone Pre-mRNAs / SLBP Dependent Processing of Replication-Dependent Histone Pre-mRNAs / protein methylation / U12-type spliceosomal complex / nucleosome organization / 7-methylguanosine cap hypermethylation / Formation of RNA Pol II elongation complex / Formation of the Early Elongation Complex / Transcriptional regulation by small RNAs / RNA Polymerase II Pre-transcription Events / TP53 Regulates Transcription of DNA Repair Genes / FGFR2 alternative splicing / RNA polymerase II transcribes snRNA genes / mRNA Capping / mRNA Splicing - Minor Pathway / Processing of Capped Intron-Containing Pre-mRNA / RNA Polymerase II Promoter Escape / RNA Polymerase II Transcription Pre-Initiation And Promoter Opening / RNA Polymerase II Transcription Initiation / RNA Polymerase II Transcription Elongation / RNA Polymerase II Transcription Initiation And Promoter Clearance / RNA Pol II CTD phosphorylation and interaction with CE / Estrogen-dependent gene expression / Formation of TC-NER Pre-Incision Complex / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / mRNA Splicing - Major Pathway / U1 snRNP binding / methylosome / blastocyst formation / pICln-Sm protein complex / positive regulation of mRNA splicing, via spliceosome / small nuclear ribonucleoprotein complex / nuclear lumen / SMN-Sm protein complex / P granule / spliceosomal tri-snRNP complex / U2-type precatalytic spliceosome / telomerase holoenzyme complex / U2-type spliceosomal complex / telomerase RNA binding / commitment complex / U2-type prespliceosome assembly / positive regulation of DNA-templated transcription, elongation / negative regulation of chaperone-mediated autophagy / U2-type catalytic step 2 spliceosome / U4 snRNP / U2 snRNP / RNA Polymerase II Transcription Termination / Abortive elongation of HIV-1 transcript in the absence of Tat / U1 snRNP / U2-type prespliceosome / precatalytic spliceosome / transcription elongation-coupled chromatin remodeling / RNA Pol II CTD phosphorylation and interaction with CE during HIV infection / RNA Pol II CTD phosphorylation and interaction with CE / Formation of the Early Elongation Complex / Formation of the HIV-1 Early Elongation Complex / mRNA Capping / spliceosomal complex assembly / regulation of RNA splicing / mRNA Splicing - Minor Pathway / RNA polymerase II complex binding / maintenance of transcriptional fidelity during transcription elongation by RNA polymerase II / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / positive regulation of macroautophagy / negative regulation of transcription elongation by RNA polymerase II / RNA polymerase II transcribes snRNA genes / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / U5 snRNP / mRNA transport / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / spliceosomal snRNP assembly / cellular response to transforming growth factor beta stimulus / RNA polymerase I complex / transcription elongation by RNA polymerase I / RNA polymerase III complex / Formation of HIV elongation complex in the absence of HIV Tat / U1 snRNA binding / RNA polymerase II, core complex / nucleosome binding / tRNA transcription by RNA polymerase III / U4/U6 x U5 tri-snRNP complex / RNA Polymerase II Transcription Elongation / transcription by RNA polymerase I 類似検索 - 分子機能
snRNP70, RNA recognition motif / U1 small nuclear ribonucleoprotein of 70kDa N-terminal / U1 small nuclear ribonucleoprotein of 70kDa MW N terminal / HHH domain 9 / HHH domain / : / YqgF/RNase H-like domain / Likely ribonuclease with RNase H fold. / Spt6 acidic, N-terminal domain / Helix-turn-helix DNA-binding domain of Spt6 ...snRNP70, RNA recognition motif / U1 small nuclear ribonucleoprotein of 70kDa N-terminal / U1 small nuclear ribonucleoprotein of 70kDa MW N terminal / HHH domain 9 / HHH domain / : / YqgF/RNase H-like domain / Likely ribonuclease with RNase H fold. / Spt6 acidic, N-terminal domain / Helix-turn-helix DNA-binding domain of Spt6 / Transcription elongation factor Spt6, YqgF domain / Transcription elongation factor Spt6, helix-hairpin-helix motif / Spt6, SH2 domain, C terminus / Acidic N-terminal SPT6 / Helix-hairpin-helix motif / Holliday-junction resolvase-like of SPT6 / Helix-turn-helix DNA-binding domain of SPT6 / Tex-like protein, HTH domain superfamily / Tex-like domain superfamily / Spt6, Death-like domain / : / Tex central region-like / Transcription elongation factor Spt6 / Spt6, SH2 domain, N terminus / Spt6, SH2 domain / SH2 domain / YqgF/RNase H-like domain superfamily / Spt5, KOW domain repeat 6 / Transcription elongation factor SPT5, seventh KOW domain / Transcription elongation factor SPT5, sixth KOW domain / U1 small nuclear ribonucleoprotein A, RNA recognition motif 2 / U1 small nuclear ribonucleoprotein A, RNA recognition motif 1 / Transcription initiation Spt4 / Spt4 superfamily / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Spt4/RpoE2 zinc finger / Small ribonucleoprotein associated, SmB/SmN / Transcription elongation factor SPT5, second KOW domain / Transcription elongation factor SPT5, fifth KOW domain / Transcription elongation factor SPT5, KOWx domain / Transcription elongation factor SPT5, KOW1 domain / Transcription elongation factor SPT5, fourth KOW domain / Transcription elongation factor Spt5, eukaryote / Spt5 transcription elongation factor, N-terminal / Spt5, KOW domain repeat 2 / Spt5, KOW domain repeat 3 / Spt5, KOW domain repeat 5 / Spt5 transcription elongation factor, acidic N-terminal / NGN domain, eukaryotic / Spt5, KOW domain repeat 1 / Spt5, KOW domain repeat 4 / Spt5 C-terminal domain / Spt5 C-terminal nonapeptide repeat binding Spt4 / NGN domain / Transcription elongation factor SPT5 / Early transcription elongation factor of RNA pol II, NGN section / Small nuclear ribonucleoprotein D1 / Small nuclear ribonucleoprotein Sm D3 / RuvA domain 2-like / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein F / 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 / NusG, N-terminal / In Spt5p, this domain may confer affinity for Spt4p. It possesses a RNP-like fold. / NusG, N-terminal domain superfamily / : / Sm domain profile. / LSM domain superfamily / DNA-directed RNA polymerase II subunit Rpb4-like / RNA polymerase Rpb1 C-terminal repeat / RNA polymerase II, heptapeptide repeat, eukaryotic / RNA polymerase Rpb4/RPC9, core / Eukaryotic RNA polymerase II heptapeptide repeat. / DNA-directed RNA-polymerase II subunit / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 6 / RNA polymerase Rpb1, domain 7 / RNA polymerase Rpb1, domain 7 superfamily / RNA polymerase Rpb1, domain 7 / Pol II subunit B9, C-terminal zinc ribbon / RNA polymerase RBP11 / Rpb4/RPC9 superfamily / RNA polymerase subunit Rpb4/RPC9 / S1 domain profile. / RNA polymerase Rpb4 / Zinc finger TFIIS-type signature. / HRDC-like superfamily / RNA polymerase Rpb7-like , N-terminal / RNA polymerase Rpb7-like, N-terminal domain superfamily / RNA polymerase subunit Rpb7-like / SHS2 domain found in N terminus of Rpb7p/Rpc25p/MJ0397 / RNA polymerase Rpb2, domain 5 類似検索 - ドメイン・相同性
: / DNA / DNA (> 10) / RNA / RNA (> 10) / RNA (> 100) / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerase subunit ...: / DNA / DNA (> 10) / RNA / RNA (> 10) / RNA (> 100) / DNA-directed RNA polymerase subunit beta / DNA-directed RNA polymerases I, II, and III subunit RPABC4 / DNA-directed RNA polymerases I, II, and III subunit RPABC2 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerase II subunit RPB4 / DNA-directed RNA polymerases I, II, and III subunit RPABC5 / DNA-directed RNA polymerase subunit / DNA-directed RNA polymerase II subunit RPB11-a / DNA-directed RNA polymerases I, II, and III subunit RPABC3 / DNA-directed RNA polymerase II subunit RPB3 / DNA-directed RNA polymerases I, II, and III subunit RPABC1 / Transcription elongation factor SPT5 / U1 small nuclear ribonucleoprotein 70 kDa / U1 small nuclear ribonucleoprotein A / DNA-directed RNA polymerase II subunit RPB9 / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein F / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D1 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein Sm D3 / Transcription elongation factor SPT4 / Small nuclear ribonucleoprotein-associated protein / Transcription elongation factor SPT6 類似検索 - 構成要素
生物種
Homo sapiens (ヒト) Sus scrofa domesticus (ブタ) synthetic construct (人工物)
ジャーナル: Nat Commun / 年: 2025 タイトル: Structure of a transcribing Pol II-DSIF-SPT6-U1 snRNP complex. 著者: Luojia Zhang / Christopher Batters / Shintaro Aibara / Yuliya Gordiyenko / Kristina Žumer / Jana Schmitzová / Kerstin Maier / Patrick Cramer / Suyang Zhang / 要旨: In eukaryotic cells, splicing occurs predominantly co-transcriptionally, enhancing splicing efficiency and fidelity while introducing an additional layer of regulation over gene expression. RNA ...In eukaryotic cells, splicing occurs predominantly co-transcriptionally, enhancing splicing efficiency and fidelity while introducing an additional layer of regulation over gene expression. RNA polymerase II (Pol II) facilitates co-transcriptional splicing by recruiting the U1 small nuclear ribonucleoprotein particle (U1 snRNP) to the nascent transcripts. Here, we report the cryo-electron microscopy structure of a transcribing Pol II-U1 snRNP complex with elongation factors DSIF and SPT6. In addition, our biochemical analysis reveals that the phosphorylated Pol II carboxyl-terminal domain and SPT6 interact directly with U1 snRNP proteins, facilitating its recruitment to the elongation complex. This multivalent interaction between U1 snRNP and the transcription elongation complex may both allow efficient spliceosome assembly and ensure transcription processivity.
A: DNA-directed RNA polymerase subunit B: DNA-directed RNA polymerase subunit beta C: DNA-directed RNA polymerase II subunit RPB3 D: RNA polymerase II subunit D E: DNA-directed RNA polymerase II subunit E F: DNA-directed RNA polymerases I, II, and III subunit RPABC2 G: DNA-directed RNA polymerase subunit H: DNA-directed RNA polymerases I, II, and III subunit RPABC3 I: DNA-directed RNA polymerase II subunit RPB9 J: DNA-directed RNA polymerases I, II, and III subunit RPABC5 K: DNA-directed RNA polymerase II subunit RPB11-a L: RNA polymerase II, I and III subunit K M: Transcription elongation factor SPT6 N: Non-template DNA P: Pre-mRNA T: Template DNA Y: Transcription elongation factor SPT4 Z: Transcription elongation factor SPT5 a: U1 snRNA b: U1 small nuclear ribonucleoprotein 70 kDa c: U1 small nuclear ribonucleoprotein A e: Small nuclear ribonucleoprotein Sm D2 f: Small nuclear ribonucleoprotein F g: Small nuclear ribonucleoprotein E h: Small nuclear ribonucleoprotein G i: Small nuclear ribonucleoprotein Sm D3 j: Small nuclear ribonucleoprotein-associated protein k: Small nuclear ribonucleoprotein Sm D1 ヘテロ分子
分子量: 24644.318 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: I3LSI7
#7: タンパク質
DNA-directedRNApolymerasesubunit
分子量: 19314.283 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: A0A4X1VKG7
#9: タンパク質
DNA-directedRNApolymeraseIIsubunitRPB9 / RNA polymerase II subunit B9 / DNA-directed RNA polymerase II subunit I / RNA polymerase II 14.5 ...RNA polymerase II subunit B9 / DNA-directed RNA polymerase II subunit I / RNA polymerase II 14.5 kDa subunit / RPB14.5
分子量: 14541.221 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: P60899
#11: タンパク質
DNA-directedRNApolymeraseIIsubunitRPB11-a
分子量: 13310.284 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: F1RKE4
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RNA polymerase ... , 2種, 2分子 DL
#4: タンパク質
RNApolymeraseIIsubunitD
分子量: 16331.255 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: A0A4X1VM56
#12: タンパク質
RNApolymeraseII, IandIIIsubunitK
分子量: 7018.244 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: A0A4X1TRS6
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DNA-directed RNA polymerases I, II, and III subunit ... , 3種, 3分子 FHJ
#6: タンパク質
DNA-directedRNApolymerasesI, II, andIIIsubunitRPABC2 / DNA-directed RNA polymerase II subunit F / RPB6 homolog
分子量: 14477.001 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: A0A4X1VEK9
#8: タンパク質
DNA-directedRNApolymerasesI, II, andIIIsubunitRPABC3
分子量: 17162.273 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: I3LCB2
#10: タンパク質
DNA-directedRNApolymerasesI, II, andIIIsubunitRPABC5
分子量: 7655.123 Da / 分子数: 1 / 由来タイプ: 天然 / 由来: (天然) Sus scrofa domesticus (ブタ) / 参照: UniProt: A0A4X1VYD0
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Transcription elongation factor ... , 3種, 3分子 MYZ
#13: タンパク質
TranscriptionelongationfactorSPT6 / hSPT6 / Histone chaperone suppressor of Ty6 / Tat-cotransactivator 2 protein / Tat-CT2 protein
分子量: 199330.719 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SUPT6H, KIAA0162, SPT6H / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q7KZ85
#17: タンパク質
TranscriptionelongationfactorSPT4 / DRB sensitivity-inducing factor small subunit / DSIF small subunit