5zwm

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Cryo-EM structure of the yeast pre-B complex at an average resolution of 3.4~4.6 angstrom (tri-snRNP and U2 snRNP Part)

Structural highlights

5zwm is a 57 chain structure with sequence from Saccharomyces cerevisiae s288c. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Activity:RNA helicase, with EC number 3.6.4.13
Experimental data:Check to display Experimental Data
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CUS1_YEAST] Essential splicing protein required for U2 snRNP binding to pre-mRNA during spliceosome assembly. [SF3B1_YEAST] Contacts pre-mRNA on both sides of the branch site early in spliceosome assembly. [RSMB_YEAST] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. [SNU13_YEAST] Common component of the spliceosome and rRNA processing machinery. In association with the spliceosomal U4/U6.U5 tri-snRNP particle, required for splicing of pre-mRNA. In association with box C/D snoRNPs, required for processing of pre-ribosomal RNA (rRNA) and site-specific 2'-O-methylation of substrate RNAs. Essential for the accumulation and stability of U4 snRNA, U6 snRNA, and box C/D snoRNAs.[1] [2] [3] [RUXG_YEAST] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. [PRP4_YEAST] Involved in RNA splicing. Is required for the association of U4/U6 snRNP with U5 snRNP in an early step of spliceosome assembly. [PRP8_YEAST] Required for pre-spliceosome formation, which is the first step of pre-mRNA splicing. This protein is associated with snRNP U5. Has a role in branch site-3' splice site selection. Associates with the branch site-3' splice 3'-exon region. Also has a role in cell cycle.[4] [5] [6] [7] [RU2A_YEAST] Involved in pre-mRNA splicing. Associates to U2 snRNA in a MSL1 dependent manner and is required for normal accumulation of U2 snRNA. Required for the spliceosome assembly and the efficient addition of U2 snRNP onto the pre-mRNA.[8] [BRR2_YEAST] RNA helicase that plays an essential role in pre-mRNA splicing as component of the U5 snRNP and U4/U6-U5 tri-snRNP complexes. Involved in spliceosome assembly, activation and disassembly. Mediates changes in the dynamic network of RNA-RNA interactions in the spliceosome. Catalyzes the ATP-dependent unwinding of U4/U6 RNA duplices, an essential step in the assembly of a catalytically active spliceosome.[9] [10] [11] [12] [RUXF_YEAST] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. [PML1_YEAST] Required for efficient splicing and pre-mRNA nuclear retention.[13] [LSM7_YEAST] Component of LSm protein complexes, which are involved in RNA processing and may function in a chaperone-like manner. Component of the cytoplasmic LSM1-LSM7 complex which is thought to be involved in mRNA degradation by activating the decapping step. Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple snRNP complexes containing the U6 snRNA (U4/U6 snRNP, spliceosomal U4/U6.U5 snRNP, and free U6 snRNP). It binds directly to the U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. It probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping. LSM7 binds specifically to the 3'-terminal U-tract of U6 snRNA. LSM2-LSM8 probably is involved in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. LSM7, probably in a complex that contains LSM2-LSM7 but not LSM1 or LSM8, associates with the precursor of the RNA component of RNase P (pre-P RNA) and may be involved in maturing pre-P RNA.[14] [15] [16] [SMD3_YEAST] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. Also binds telomerase RNA and is required for its accumulation.[17] [18] [RUXE_YEAST] Involved in pre-mRNA splicing. Binds and is required for the stability of snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. Involved in cap modification.[19] [LSM2_YEAST] Component of LSm protein complexes, which are involved in RNA processing and may function in a chaperone-like manner. Component of the cytoplasmic LSM1-LSM7 complex which is thought to be involved in mRNA degradation by activating the decapping step. Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple snRNP complexes containing the U6 snRNA (U4/U6 snRNP, U4/U6.U5 snRNP, and free U6 snRNP). It binds directly to the U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. It probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping. LSM2 binds specifically to the 3'-terminal U-tract of U6 snRNA. LSM2-LSM8 probably is involved in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. LSM2, probably in a complex that contains LSM2-LSM7 but not LSM1 or LSM8, associates with the precursor of the RNA component of RNase P (pre-P RNA) and may be involved in maturing pre-P RNA. LSM2 is required for processing of pre-tRNAs, pre-rRNAs and U3 snoRNA.[20] [21] [22] [23] [24] [MSL1_YEAST] Involved in pre-mRNA splicing. This protein is associated with snRNP U2. It binds stem loop IV of U2 snRNA.[25] [HSH49_YEAST] Possible SF3b-like factor. [LSM3_YEAST] Component of LSm protein complexes, which are involved in RNA processing and may function in a chaperone-like manner. Component of the cytoplasmic LSM1-LSM7 complex which is thought to be involved in mRNA degradation by activating the decapping step. Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple snRNP complexes containing the U6 snRNA (U4/U6 snRNP, U4/U6.U5 snRNP, and free U6 snRNP). It binds directly to the U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. It probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping. LSM3 binds specifically to the 3'-terminal U-tract of U6 snRNA. LSM2-LSM8 probably is involved in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. LSM3, probably in a complex that contains LSM2-LSM7 but not LSM1 or LSM8, associates with the precursor of the RNA component of RNase P (pre-P RNA) and may be involved in maturing pre-P RNA. LSM3 is required for processing of pre-tRNAs, pre-rRNAs and U3 snoRNA.[26] [27] [28] [29] [30] [31] [PRP21_YEAST] mRNA splicing factors, PRP9, PRP11, and PRP21, are necessary for binding of the U2 snRNP to the pre-mRNA in an early step of spliceosome assembly. [SMD1_YEAST] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. Also binds telomerase RNA and is required for its accumulation.[32] [33] [LSM5_YEAST] Component of LSm protein complexes, which are involved in RNA processing and may function in a chaperone-like manner. Component of the cytoplasmic LSM1-LSM7 complex which is thought to be involved in mRNA degradation by activating the decapping step. Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple snRNP complexes containing the U6 snRNA (U4/U6 snRNP, U4/U6.U5 snRNP, and free U6 snRNP). It binds directly to the U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. It probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping. LSM5 binds specifically to the 3'-terminal U-tract of U6 snRNA. LSM2-LSM8 probably is involved in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. LSM5, probably in a complex that contains LSM2-LSM7 but not LSM1 or LSM8, associates with the precursor of the RNA component of RNase P (pre-P RNA) and may be involved in maturing pre-P RNA. LSM5 is required for processing of pre-tRNAs, pre-rRNAs and U3 snoRNA.[34] [35] [36] [37] [38] [SMD2_YEAST] Involved in pre-mRNA splicing. Binds snRNA U1, U2, U4 and U5 which contain a highly conserved structural motif called the Sm binding site. [DIB1_YEAST] Essential role in pre-mRNA splicing. Also essential for entry into mitosis (G2/M progression) as well as for chromosome segregation during mitosis. [CWC26_YEAST] Required for efficient splicing and pre-mRNA nuclear retention. May also be involved in positioning the proximal bud pole signal.[39] [40] [41] [42] [PRP31_YEAST] Promotes the association of the U4/U6.U5 tri-snRNP particle with pre-spliceosomes to form the mature spliceosomal complex.[43] [RDS3_YEAST] Required for pre-mRNA splicing. Involved in regulation of drug sensitivity and may play a role in multidrug resistance.[44] [45] [LSM8_YEAST] Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple snRNP complexes containing the U6 snRNA (U4/U6 snRNP, spliceosomal U4/U6.U5 snRNP, and free U6 snRNP). It binds directly to the U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. It probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping. LSM2-LSM8 probably is involved in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. LSM2 is required for processing of pre-tRNAs, pre-rRNAs and U3 snoRNA.[46] [47] [48] [PRP9_YEAST] mRNA splicing factors, PRP9, PRP11, and PRP21, are necessary for binding of the U2 snRNP to the pre-mRNA in an early step of spliceosome assembly. [LSM6_YEAST] Component of LSm protein complexes, which are involved in RNA processing and may function in a chaperone-like manner, facilitating the efficient association of RNA processing factors with their substrates. Component of the cytoplasmic LSM1-LSM7 complex, which is thought to be involved in mRNA degradation by activating the decapping step in the 5'-to-3' mRNA decay pathway. In association with PAT1, LSM1-LSM7 binds directly to RNAs near the 3'-end and prefers oligoadenylated RNAs over polyadenylated RNAs. Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple snRNP complexes containing the U6 snRNA (U4/U6 di-snRNP, spliceosomal U4/U6.U5 tri-snRNP, and free U6 snRNP). It binds directly to the 3'-terminal U-tract of U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. LSM2-LSM8 probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping, and in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. Component of a nucleolar LSM2-LSM7 complex, which associates with the precursor of the RNA component of RNase P (pre-P RNA) and with the small nucleolar RNA (snoRNA) snR5. It may play a role in the maturation of a subset of nucleolus-associated small RNAs.[49] [50] [51] [52] [LSM4_YEAST] Component of LSm protein complexes, which are involved in RNA processing and may function in a chaperone-like manner. Component of the cytoplasmic LSM1-LSM7 complex which is thought to be involved in mRNA degradation by activating the decapping step. Component of the nuclear LSM2-LSM8 complex, which is involved in splicing of nuclear mRNAs. LSM2-LSM8 associates with multiple spliceosome snRNP complexes containing the U6 snRNA (U4/U6 snRNP, U4/U6.U5 snRNP, and free U6 snRNP). It binds directly to the U6 snRNA and plays a role in the biogenesis and stability of the U6 snRNP and U4/U6 snRNP complexes. It probably also is involved degradation of nuclear pre-mRNA by targeting them for decapping. LSM4 binds specifically to the 3'-terminal U-tract of U6 snRNA. LSM2-LSM8 probably is involved in processing of pre-tRNAs, pre-rRNAs and U3 snoRNA. LSM4, probably in a complex that contains LSM2-LSM7 but not LSM1 or LSM8, associates with the precursor of the RNA component of RNase P (pre-P RNA) and may be involved in maturing pre-P RNA. LSM4 is required for processing of pre-tRNAs, pre-rRNAs and U3 snoRNA.[53] [54] [55] [56] [57] [SN114_YEAST] Component of the U5 snRNP complex required for pre-mRNA splicing. Binds GTP. [IST3_YEAST] Required for pre-mRNA splicing and spliceosome assembly. As part of the pre-mRNA retention and splicing (RES) complex, required for nuclear pre-mRNA retention and efficient splicing. Required for MER1-activated splicing.[58] [59] [60] [PRP6_YEAST] Participates in pre-mRNA splicing. Part of the U4/U5/U6 tri-snRNP complex, one of the building blocks of the spliceosome. [RSE1_YEAST] Involved in G2/M transition (By similarity). Required for pre-mRNA splicing and endoplasmic reticulum (ER) to Golgi secretion pathway. U2 snRNPs associated protein required for the pre-spliceosome assembly. The involvement in ER to Golgi secretion is probably indirect and due to the splicing of the pre-mRNA coding for SAR1, a small GTP-binding protein required for COPII vesicle formation from the ER.[61] [62] [YSF3_YEAST] Involved in pre-mRNA splicing. Required for the SF3b integrity and prespliceosome assembly.[63] [PRP11_YEAST] mRNA splicing factors, PRP9, PRP11, and PRP21, are necessary for addition of the U2 snRNP to the pre-mRNA in an early step of spliceosome assembly.[64] [SNU66_YEAST] Component of the U4/U6.U5 tri-snRNP particle, one of the building blocks of the spliceosome. Required for pre-mRNA splicing.[65] [PRP3_YEAST] Participates in pre-mRNA splicing. Part of the U4/U5/U6 tri-snRNP complex, one of the building blocks of the spliceosome.[66]

Publication Abstract from PubMed

The precatalytic spliceosome (B complex) is preceded by the pre-B complex. Here we report the cryo-electron microscopy structures of the Saccharomyces cerevisiae pre-B and B complexes at average resolutions of 3.3 to 4.6 and 3.9 angstroms, respectively. In the pre-B complex, the duplex between the 5' splice site (5'SS) and U1 small nuclear RNA (snRNA) is recognized by Yhc1, Luc7, and the Sm ring. In the B complex, U1 small nuclear ribonucleoprotein is dissociated, the 5'-exon-5'SS sequences are translocated near U6 snRNA, and three B-specific proteins may orient the precursor messenger RNA. In both complexes, U6 snRNA is anchored to loop I of U5 snRNA, and the duplex between the branch point sequence and U2 snRNA is recognized by the SF3b complex. Structural analysis reveals the mechanism of assembly and activation for the yeast spliceosome.

Structures of the fully assembled Saccharomyces cerevisiae spliceosome before activation.,Bai R, Wan R, Yan C, Lei J, Shi Y Science. 2018 Jun 29;360(6396):1423-1429. doi: 10.1126/science.aau0325. Epub 2018, May 24. PMID:29794219[67]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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References

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  21. ↑ Kufel J, Allmang C, Verdone L, Beggs JD, Tollervey D. Lsm proteins are required for normal processing of pre-tRNAs and their efficient association with La-homologous protein Lhp1p. Mol Cell Biol. 2002 Jul;22(14):5248-56. PMID:12077351
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  27. ↑ Bouveret E, Rigaut G, Shevchenko A, Wilm M, Seraphin B. A Sm-like protein complex that participates in mRNA degradation. EMBO J. 2000 Apr 3;19(7):1661-71. PMID:10747033 doi:10.1093/emboj/19.7.1661
  28. ↑ Tharun S, He W, Mayes AE, Lennertz P, Beggs JD, Parker R. Yeast Sm-like proteins function in mRNA decapping and decay. Nature. 2000 Mar 30;404(6777):515-8. PMID:10761922 doi:10.1038/35006676
  29. ↑ Kufel J, Allmang C, Verdone L, Beggs JD, Tollervey D. Lsm proteins are required for normal processing of pre-tRNAs and their efficient association with La-homologous protein Lhp1p. Mol Cell Biol. 2002 Jul;22(14):5248-56. PMID:12077351
  30. ↑ Kufel J, Allmang C, Petfalski E, Beggs J, Tollervey D. Lsm Proteins are required for normal processing and stability of ribosomal RNAs. J Biol Chem. 2003 Jan 24;278(4):2147-56. Epub 2002 Nov 15. PMID:12438310 doi:http://dx.doi.org/10.1074/jbc.M208856200
  31. ↑ Kufel J, Bousquet-Antonelli C, Beggs JD, Tollervey D. Nuclear pre-mRNA decapping and 5' degradation in yeast require the Lsm2-8p complex. Mol Cell Biol. 2004 Nov;24(21):9646-57. PMID:15485930 doi:http://dx.doi.org/10.1128/MCB.24.21.9646-9657.2004
  32. ↑ Seto AG, Zaug AJ, Sobel SG, Wolin SL, Cech TR. Saccharomyces cerevisiae telomerase is an Sm small nuclear ribonucleoprotein particle. Nature. 1999 Sep 9;401(6749):177-80. PMID:10490028 doi:http://dx.doi.org/10.1038/43694
  33. ↑ Rymond BC. Convergent transcripts of the yeast PRP38-SMD1 locus encode two essential splicing factors, including the D1 core polypeptide of small nuclear ribonucleoprotein particles. Proc Natl Acad Sci U S A. 1993 Feb 1;90(3):848-52. PMID:8430095
  34. ↑ Bouveret E, Rigaut G, Shevchenko A, Wilm M, Seraphin B. A Sm-like protein complex that participates in mRNA degradation. EMBO J. 2000 Apr 3;19(7):1661-71. PMID:10747033 doi:10.1093/emboj/19.7.1661
  35. ↑ Tharun S, He W, Mayes AE, Lennertz P, Beggs JD, Parker R. Yeast Sm-like proteins function in mRNA decapping and decay. Nature. 2000 Mar 30;404(6777):515-8. PMID:10761922 doi:10.1038/35006676
  36. ↑ Kufel J, Allmang C, Verdone L, Beggs JD, Tollervey D. Lsm proteins are required for normal processing of pre-tRNAs and their efficient association with La-homologous protein Lhp1p. Mol Cell Biol. 2002 Jul;22(14):5248-56. PMID:12077351
  37. ↑ Kufel J, Allmang C, Petfalski E, Beggs J, Tollervey D. Lsm Proteins are required for normal processing and stability of ribosomal RNAs. J Biol Chem. 2003 Jan 24;278(4):2147-56. Epub 2002 Nov 15. PMID:12438310 doi:http://dx.doi.org/10.1074/jbc.M208856200
  38. ↑ Kufel J, Bousquet-Antonelli C, Beggs JD, Tollervey D. Nuclear pre-mRNA decapping and 5' degradation in yeast require the Lsm2-8p complex. Mol Cell Biol. 2004 Nov;24(21):9646-57. PMID:15485930 doi:http://dx.doi.org/10.1128/MCB.24.21.9646-9657.2004
  39. ↑ Zahner JE, Harkins HA, Pringle JR. Genetic analysis of the bipolar pattern of bud site selection in the yeast Saccharomyces cerevisiae. Mol Cell Biol. 1996 Apr;16(4):1857-70. PMID:8657162
  40. ↑ Ni L, Snyder M. A genomic study of the bipolar bud site selection pattern in Saccharomyces cerevisiae. Mol Biol Cell. 2001 Jul;12(7):2147-70. PMID:11452010
  41. ↑ Vincent K, Wang Q, Jay S, Hobbs K, Rymond BC. Genetic interactions with CLF1 identify additional pre-mRNA splicing factors and a link between activators of yeast vesicular transport and splicing. Genetics. 2003 Jul;164(3):895-907. PMID:12871902
  42. ↑ Dziembowski A, Ventura AP, Rutz B, Caspary F, Faux C, Halgand F, Laprevote O, Seraphin B. Proteomic analysis identifies a new complex required for nuclear pre-mRNA retention and splicing. EMBO J. 2004 Dec 8;23(24):4847-56. Epub 2004 Nov 25. PMID:15565172 doi:http://dx.doi.org/7600482
  43. ↑ Weidenhammer EM, Singh M, Ruiz-Noriega M, Woolford JL Jr. The PRP31 gene encodes a novel protein required for pre-mRNA splicing in Saccharomyces cerevisiae. Nucleic Acids Res. 1996 Mar 15;24(6):1164-70. PMID:8604353
  44. ↑ Akache B, Turcotte B. New regulators of drug sensitivity in the family of yeast zinc cluster proteins. J Biol Chem. 2002 Jun 14;277(24):21254-60. Epub 2002 Apr 9. PMID:11943786 doi:http://dx.doi.org/10.1074/jbc.M202566200
  45. ↑ Wang Q, Rymond BC. Rds3p is required for stable U2 snRNP recruitment to the splicing apparatus. Mol Cell Biol. 2003 Oct;23(20):7339-49. PMID:14517302
  46. ↑ Kufel J, Allmang C, Verdone L, Beggs JD, Tollervey D. Lsm proteins are required for normal processing of pre-tRNAs and their efficient association with La-homologous protein Lhp1p. Mol Cell Biol. 2002 Jul;22(14):5248-56. PMID:12077351
  47. ↑ Kufel J, Allmang C, Petfalski E, Beggs J, Tollervey D. Lsm Proteins are required for normal processing and stability of ribosomal RNAs. J Biol Chem. 2003 Jan 24;278(4):2147-56. Epub 2002 Nov 15. PMID:12438310 doi:http://dx.doi.org/10.1074/jbc.M208856200
  48. ↑ Kufel J, Bousquet-Antonelli C, Beggs JD, Tollervey D. Nuclear pre-mRNA decapping and 5' degradation in yeast require the Lsm2-8p complex. Mol Cell Biol. 2004 Nov;24(21):9646-57. PMID:15485930 doi:http://dx.doi.org/10.1128/MCB.24.21.9646-9657.2004
  49. ↑ Bouveret E, Rigaut G, Shevchenko A, Wilm M, Seraphin B. A Sm-like protein complex that participates in mRNA degradation. EMBO J. 2000 Apr 3;19(7):1661-71. PMID:10747033 doi:10.1093/emboj/19.7.1661
  50. ↑ Tharun S, He W, Mayes AE, Lennertz P, Beggs JD, Parker R. Yeast Sm-like proteins function in mRNA decapping and decay. Nature. 2000 Mar 30;404(6777):515-8. PMID:10761922 doi:10.1038/35006676
  51. ↑ Kufel J, Bousquet-Antonelli C, Beggs JD, Tollervey D. Nuclear pre-mRNA decapping and 5' degradation in yeast require the Lsm2-8p complex. Mol Cell Biol. 2004 Nov;24(21):9646-57. PMID:15485930 doi:http://dx.doi.org/10.1128/MCB.24.21.9646-9657.2004
  52. ↑ Chowdhury A, Mukhopadhyay J, Tharun S. The decapping activator Lsm1p-7p-Pat1p complex has the intrinsic ability to distinguish between oligoadenylated and polyadenylated RNAs. RNA. 2007 Jul;13(7):998-1016. Epub 2007 May 18. PMID:17513695 doi:rna.502507
  53. ↑ Bouveret E, Rigaut G, Shevchenko A, Wilm M, Seraphin B. A Sm-like protein complex that participates in mRNA degradation. EMBO J. 2000 Apr 3;19(7):1661-71. PMID:10747033 doi:10.1093/emboj/19.7.1661
  54. ↑ Tharun S, He W, Mayes AE, Lennertz P, Beggs JD, Parker R. Yeast Sm-like proteins function in mRNA decapping and decay. Nature. 2000 Mar 30;404(6777):515-8. PMID:10761922 doi:10.1038/35006676
  55. ↑ Kufel J, Allmang C, Verdone L, Beggs JD, Tollervey D. Lsm proteins are required for normal processing of pre-tRNAs and their efficient association with La-homologous protein Lhp1p. Mol Cell Biol. 2002 Jul;22(14):5248-56. PMID:12077351
  56. ↑ Kufel J, Allmang C, Petfalski E, Beggs J, Tollervey D. Lsm Proteins are required for normal processing and stability of ribosomal RNAs. J Biol Chem. 2003 Jan 24;278(4):2147-56. Epub 2002 Nov 15. PMID:12438310 doi:http://dx.doi.org/10.1074/jbc.M208856200
  57. ↑ Kufel J, Bousquet-Antonelli C, Beggs JD, Tollervey D. Nuclear pre-mRNA decapping and 5' degradation in yeast require the Lsm2-8p complex. Mol Cell Biol. 2004 Nov;24(21):9646-57. PMID:15485930 doi:http://dx.doi.org/10.1128/MCB.24.21.9646-9657.2004
  58. ↑ Gottschalk A, Bartels C, Neubauer G, Luhrmann R, Fabrizio P. A novel yeast U2 snRNP protein, Snu17p, is required for the first catalytic step of splicing and for progression of spliceosome assembly. Mol Cell Biol. 2001 May;21(9):3037-46. PMID:11287609 doi:http://dx.doi.org/10.1128/MCB.21.9.3037-3046.2001
  59. ↑ Dziembowski A, Ventura AP, Rutz B, Caspary F, Faux C, Halgand F, Laprevote O, Seraphin B. Proteomic analysis identifies a new complex required for nuclear pre-mRNA retention and splicing. EMBO J. 2004 Dec 8;23(24):4847-56. Epub 2004 Nov 25. PMID:15565172 doi:http://dx.doi.org/7600482
  60. ↑ Spingola M, Armisen J, Ares M Jr. Mer1p is a modular splicing factor whose function depends on the conserved U2 snRNP protein Snu17p. Nucleic Acids Res. 2004 Feb 18;32(3):1242-50. Print 2004. PMID:14973223 doi:http://dx.doi.org/10.1093/nar/gkh281
  61. ↑ Caspary F, Shevchenko A, Wilm M, Seraphin B. Partial purification of the yeast U2 snRNP reveals a novel yeast pre-mRNA splicing factor required for pre-spliceosome assembly. EMBO J. 1999 Jun 15;18(12):3463-74. PMID:10369685 doi:http://dx.doi.org/10.1093/emboj/18.12.3463
  62. ↑ Chen EJ, Frand AR, Chitouras E, Kaiser CA. A link between secretion and pre-mRNA processing defects in Saccharomyces cerevisiae and the identification of a novel splicing gene, RSE1. Mol Cell Biol. 1998 Dec;18(12):7139-46. PMID:9819400
  63. ↑ Wang Q, He J, Lynn B, Rymond BC. Interactions of the yeast SF3b splicing factor. Mol Cell Biol. 2005 Dec;25(24):10745-54. PMID:16314500 doi:http://dx.doi.org/25/24/10745
  64. ↑ Yan D, Perriman R, Igel H, Howe KJ, Neville M, Ares M Jr. CUS2, a yeast homolog of human Tat-SF1, rescues function of misfolded U2 through an unusual RNA recognition motif. Mol Cell Biol. 1998 Sep;18(9):5000-9. PMID:9710584
  65. ↑ van Nues RW, Beggs JD. Functional contacts with a range of splicing proteins suggest a central role for Brr2p in the dynamic control of the order of events in spliceosomes of Saccharomyces cerevisiae. Genetics. 2001 Apr;157(4):1451-67. PMID:11290703
  66. ↑ Anthony JG, Weidenhammer EM, Woolford JL Jr. The yeast Prp3 protein is a U4/U6 snRNP protein necessary for integrity of the U4/U6 snRNP and the U4/U6.U5 tri-snRNP. RNA. 1997 Oct;3(10):1143-52. PMID:9326489
  67. ↑ Bai R, Wan R, Yan C, Lei J, Shi Y. Structures of the fully assembled Saccharomyces cerevisiae spliceosome before activation. Science. 2018 Jun 29;360(6396):1423-1429. doi: 10.1126/science.aau0325. Epub 2018, May 24. PMID:29794219 doi:http://dx.doi.org/10.1126/science.aau0325

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