mRNA splice site recognition / splicing factor binding / U4/U6 snRNP / 7-methylguanosine cap hypermethylation / pICln-Sm protein complex / positive regulation of mRNA splicing, via spliceosome / snRNP binding / small nuclear ribonucleoprotein complex / SMN-Sm protein complex / spliceosomal tri-snRNP complex ...mRNA splice site recognition / splicing factor binding / U4/U6 snRNP / 7-methylguanosine cap hypermethylation / pICln-Sm protein complex / positive regulation of mRNA splicing, via spliceosome / snRNP binding / small nuclear ribonucleoprotein complex / SMN-Sm protein complex / spliceosomal tri-snRNP complex / commitment complex / U2-type prespliceosome assembly / U4 snRNP / U2 snRNP / U1 snRNP / poly(U) RNA binding / U2-type prespliceosome / pre-mRNA 5'-splice site binding / precatalytic spliceosome / spliceosomal complex assembly / mRNA 5'-splice site recognition / Prp19 complex / U5 snRNP / spliceosomal snRNP assembly / U1 snRNA binding / U4/U6 x U5 tri-snRNP complex / catalytic step 2 spliceosome / spliceosomal complex / mRNA splicing, via spliceosome / mRNA binding / RNA binding / zinc ion binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
Snu56-like U1 small nuclear ribonucleoprotein component / Snu56-like U1 small nuclear ribonucleoprotein component / SNU71 RNA binding domain / SNU71 N-terminal / U1 small nuclear ribonucleoprotein C / PRP39 C-terminal HAT repeat / U1 small nuclear ribonucleoprotein of 70kDa N-terminal / U1 small nuclear ribonucleoprotein of 70kDa MW N terminal / : / : ...Snu56-like U1 small nuclear ribonucleoprotein component / Snu56-like U1 small nuclear ribonucleoprotein component / SNU71 RNA binding domain / SNU71 N-terminal / U1 small nuclear ribonucleoprotein C / PRP39 C-terminal HAT repeat / U1 small nuclear ribonucleoprotein of 70kDa N-terminal / U1 small nuclear ribonucleoprotein of 70kDa MW N terminal / : / : / U1-C, C2H2-type zinc finger / U1 zinc finger / PWI domain / PWI, domain in splicing factors / PRP39 N-terminal HAT repeat / : / Matrin/U1-C, C2H2-type zinc finger / Zinc finger matrin-type profile. / Small nuclear ribonucleoprotein Sm D3 / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein E / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein F / Matrin/U1-C-like, C2H2-type zinc finger / U1-like zinc finger / 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 / Zinc finger C2H2 superfamily / RNA recognition motif / RNA recognition motif / Eukaryotic RNA Recognition Motif (RRM) profile. / RNA recognition motif domain / RNA-binding domain superfamily / Tetratricopeptide-like helical domain superfamily / Nucleotide-binding alpha-beta plait domain superfamily 類似検索 - ドメイン・相同性
U1 small nuclear ribonucleoprotein A / Pre-mRNA-processing factor 39 / Small nuclear ribonucleoprotein-associated protein B / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D3 / U1 small nuclear ribonucleoprotein component SNU71 / Small nuclear ribonucleoprotein F / Protein NAM8 / U1 small nuclear ribonucleoprotein 70 kDa homolog / Small nuclear ribonucleoprotein Sm D1 ...U1 small nuclear ribonucleoprotein A / Pre-mRNA-processing factor 39 / Small nuclear ribonucleoprotein-associated protein B / Small nuclear ribonucleoprotein G / Small nuclear ribonucleoprotein Sm D3 / U1 small nuclear ribonucleoprotein component SNU71 / Small nuclear ribonucleoprotein F / Protein NAM8 / U1 small nuclear ribonucleoprotein 70 kDa homolog / Small nuclear ribonucleoprotein Sm D1 / U1 small nuclear ribonucleoprotein component PRP42 / 56 kDa U1 small nuclear ribonucleoprotein component / U1 small nuclear ribonucleoprotein C / Small nuclear ribonucleoprotein Sm D2 / Small nuclear ribonucleoprotein E 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences
GM114178
米国
National Institutes of Health/National Institute of General Medical Sciences
GM071940
米国
National Institutes of Health/National Institute of General Medical Sciences
GM114178-02S2
米国
National Institutes of Health/National Institute Of Allergy and Infectious Diseases
AI094386
米国
引用
ジャーナル: Nat Commun / 年: 2017 タイトル: CryoEM structure of Saccharomyces cerevisiae U1 snRNP offers insight into alternative splicing. 著者: Xueni Li / Shiheng Liu / Jiansen Jiang / Lingdi Zhang / Sara Espinosa / Ryan C Hill / Kirk C Hansen / Z Hong Zhou / Rui Zhao / 要旨: U1 snRNP plays a critical role in 5'-splice site recognition and is a frequent target of alternative splicing factors. These factors transiently associate with human U1 snRNP and are not amenable for ...U1 snRNP plays a critical role in 5'-splice site recognition and is a frequent target of alternative splicing factors. These factors transiently associate with human U1 snRNP and are not amenable for structural studies, while their Saccharomyces cerevisiae (yeast) homologs are stable components of U1 snRNP. Here, we report the cryoEM structure of yeast U1 snRNP at 3.6 Å resolution with atomic models for ten core proteins, nearly all essential domains of its RNA, and five stably associated auxiliary proteins. The foot-shaped yeast U1 snRNP contains a core in the "ball-and-toes" region architecturally similar to the human U1 snRNP. All auxiliary proteins are in the "arch-and-heel" region and connected to the core through the Prp42/Prp39 paralogs. Our demonstration that homodimeric human PrpF39 directly interacts with U1C-CTD, mirroring yeast Prp42/Prp39, supports yeast U1 snRNP as a model for understanding how transiently associated auxiliary proteins recruit human U1 snRNP in alternative splicing.