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. 1990 Jan;10(1):84–94. doi: 10.1128/mcb.10.1.84

Exon definition may facilitate splice site selection in RNAs with multiple exons.

B L Robberson 1, G J Cote 1, S M Berget 1
PMCID: PMC360715  PMID: 2136768

Abstract

Interactions at the 3' end of the intron initiate spliceosome assembly and splice site selection in vertebrate pre-mRNAs. Multiple factors, including U1 small nuclear ribonucleoproteins (snRNPs), are involved in initial recognition at the 3' end of the intron. Experiments were designed to test the possibility that U1 snRNP interaction at the 3' end of the intron during early assembly functions to recognize and define the downstream exon and its resident 5' splice site. Splicing precursor RNAs constructed to have elongated second exons lacking 5' splice sites were deficient in spliceosome assembly and splicing activity in vitro. Similar substrates including a 5' splice site at the end of exon 2 assembled and spliced normally as long as the second exon was less than 300 nucleotides long. U2 snRNPs were required for protection of the 5' splice site terminating exon 2, suggesting direct communication during early assembly between factors binding the 3' and 5' splice sites bordering an exon. We suggest that exons are recognized and defined as units during early assembly by binding of factors to the 3' end of the intron, followed by a search for a downstream 5' splice site. In this view, only the presence of both a 3' and a 5' splice site in the correct orientation and within 300 nucleotides of one another will stable exon complexes be formed. Concerted recognition of exons may help explain the 300-nucleotide-length maximum of vertebrate internal exons, the mechanism whereby the splicing machinery ignores cryptic sites within introns, the mechanism whereby exon skipping is normally avoided, and the phenotypes of 5' splice site mutations that inhibit splicing of neighboring introns.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Aebi M., Hornig H., Weissmann C. 5' cleavage site in eukaryotic pre-mRNA splicing is determined by the overall 5' splice region, not by the conserved 5' GU. Cell. 1987 Jul 17;50(2):237–246. doi: 10.1016/0092-8674(87)90219-4. [DOI] [PubMed] [Google Scholar]
  2. Beyer A. L., Osheim Y. N. Splice site selection, rate of splicing, and alternative splicing on nascent transcripts. Genes Dev. 1988 Jun;2(6):754–765. doi: 10.1101/gad.2.6.754. [DOI] [PubMed] [Google Scholar]
  3. Bindereif A., Green M. R. An ordered pathway of snRNP binding during mammalian pre-mRNA splicing complex assembly. EMBO J. 1987 Aug;6(8):2415–2424. doi: 10.1002/j.1460-2075.1987.tb02520.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Black D. L., Chabot B., Steitz J. A. U2 as well as U1 small nuclear ribonucleoproteins are involved in premessenger RNA splicing. Cell. 1985 Oct;42(3):737–750. doi: 10.1016/0092-8674(85)90270-3. [DOI] [PubMed] [Google Scholar]
  5. Chabot B., Black D. L., LeMaster D. M., Steitz J. A. The 3' splice site of pre-messenger RNA is recognized by a small nuclear ribonucleoprotein. Science. 1985 Dec 20;230(4732):1344–1349. doi: 10.1126/science.2933810. [DOI] [PubMed] [Google Scholar]
  6. Chabot B., Steitz J. A. Multiple interactions between the splicing substrate and small nuclear ribonucleoproteins in spliceosomes. Mol Cell Biol. 1987 Jan;7(1):281–293. doi: 10.1128/mcb.7.1.281. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Cheng S. C., Abelson J. Spliceosome assembly in yeast. Genes Dev. 1987 Nov;1(9):1014–1027. doi: 10.1101/gad.1.9.1014. [DOI] [PubMed] [Google Scholar]
  8. Chu G., Sharp P. A. A gene chimaera of SV40 and mouse beta-globin is transcribed and properly spliced. Nature. 1981 Jan 29;289(5796):378–382. doi: 10.1038/289378a0. [DOI] [PubMed] [Google Scholar]
  9. Dobkin C., Bank A. Reversibility of IVS 2 missplicing in a mutant human beta-globin gene. J Biol Chem. 1985 Dec 25;260(30):16332–16337. [PubMed] [Google Scholar]
  10. Eperon L. P., Estibeiro J. P., Eperon I. C. The role of nucleotide sequences in splice site selection in eukaryotic pre-messenger RNA. Nature. 1986 Nov 20;324(6094):280–282. doi: 10.1038/324280a0. [DOI] [PubMed] [Google Scholar]
  11. Frendewey D., Keller W. Stepwise assembly of a pre-mRNA splicing complex requires U-snRNPs and specific intron sequences. Cell. 1985 Aug;42(1):355–367. doi: 10.1016/s0092-8674(85)80131-8. [DOI] [PubMed] [Google Scholar]
  12. Frendewey D., Krämer A., Keller W. Different small nuclear ribonucleoprotein particles are involved in different steps of splicing complex formation. Cold Spring Harb Symp Quant Biol. 1987;52:287–298. doi: 10.1101/sqb.1987.052.01.034. [DOI] [PubMed] [Google Scholar]
  13. Furdon P. J., Kole R. Inhibition of splicing but not cleavage at the 5' splice site by truncating human beta-globin pre-mRNA. Proc Natl Acad Sci U S A. 1986 Feb;83(4):927–931. doi: 10.1073/pnas.83.4.927. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Furdon P. J., Kole R. The length of the downstream exon and the substitution of specific sequences affect pre-mRNA splicing in vitro. Mol Cell Biol. 1988 Feb;8(2):860–866. doi: 10.1128/mcb.8.2.860. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Gerke V., Steitz J. A. A protein associated with small nuclear ribonucleoprotein particles recognizes the 3' splice site of premessenger RNA. Cell. 1986 Dec 26;47(6):973–984. doi: 10.1016/0092-8674(86)90812-3. [DOI] [PubMed] [Google Scholar]
  16. Grabowski P. J., Padgett R. A., Sharp P. A. Messenger RNA splicing in vitro: an excised intervening sequence and a potential intermediate. Cell. 1984 Jun;37(2):415–427. doi: 10.1016/0092-8674(84)90372-6. [DOI] [PubMed] [Google Scholar]
  17. Grabowski P. J., Seiler S. R., Sharp P. A. A multicomponent complex is involved in the splicing of messenger RNA precursors. Cell. 1985 Aug;42(1):345–353. doi: 10.1016/s0092-8674(85)80130-6. [DOI] [PubMed] [Google Scholar]
  18. Grabowski P. J., Sharp P. A. Affinity chromatography of splicing complexes: U2, U5, and U4 + U6 small nuclear ribonucleoprotein particles in the spliceosome. Science. 1986 Sep 19;233(4770):1294–1299. doi: 10.1126/science.3638792. [DOI] [PubMed] [Google Scholar]
  19. Green M. R. Pre-mRNA splicing. Annu Rev Genet. 1986;20:671–708. doi: 10.1146/annurev.ge.20.120186.003323. [DOI] [PubMed] [Google Scholar]
  20. Hawkins J. D. A survey on intron and exon lengths. Nucleic Acids Res. 1988 Nov 11;16(21):9893–9908. doi: 10.1093/nar/16.21.9893. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Hornig H., Aebi M., Weissmann C. Effect of mutations at the lariat branch acceptor site on beta-globin pre-mRNA splicing in vitro. Nature. 1986 Dec 11;324(6097):589–591. doi: 10.1038/324589a0. [DOI] [PubMed] [Google Scholar]
  22. Konarska M. M., Padgett R. A., Sharp P. A. Trans splicing of mRNA precursors in vitro. Cell. 1985 Aug;42(1):165–171. doi: 10.1016/s0092-8674(85)80112-4. [DOI] [PubMed] [Google Scholar]
  23. Konarska M. M., Sharp P. A. Electrophoretic separation of complexes involved in the splicing of precursors to mRNAs. Cell. 1986 Sep 12;46(6):845–855. doi: 10.1016/0092-8674(86)90066-8. [DOI] [PubMed] [Google Scholar]
  24. Konarska M. M., Sharp P. A. Interactions between small nuclear ribonucleoprotein particles in formation of spliceosomes. Cell. 1987 Jun 19;49(6):763–774. doi: 10.1016/0092-8674(87)90614-3. [DOI] [PubMed] [Google Scholar]
  25. Krainer A. R., Maniatis T. Multiple factors including the small nuclear ribonucleoproteins U1 and U2 are necessary for pre-mRNA splicing in vitro. Cell. 1985 Oct;42(3):725–736. doi: 10.1016/0092-8674(85)90269-7. [DOI] [PubMed] [Google Scholar]
  26. Kühne T., Wieringa B., Reiser J., Weissmann C. Evidence against a scanning model of RNA splicing. EMBO J. 1983;2(5):727–733. doi: 10.1002/j.1460-2075.1983.tb01492.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Lamond A. I., Konarska M. M., Sharp P. A. A mutational analysis of spliceosome assembly: evidence for splice site collaboration during spliceosome formation. Genes Dev. 1987 Aug;1(6):532–543. doi: 10.1101/gad.1.6.532. [DOI] [PubMed] [Google Scholar]
  28. Lang K. M., Spritz R. A. RNA splice site selection: evidence for a 5' leads to 3' scanning model. Science. 1983 Jun 24;220(4604):1351–1355. doi: 10.1126/science.6304877. [DOI] [PubMed] [Google Scholar]
  29. Langford C. J., Gallwitz D. Evidence for an intron-contained sequence required for the splicing of yeast RNA polymerase II transcripts. Cell. 1983 Jun;33(2):519–527. doi: 10.1016/0092-8674(83)90433-6. [DOI] [PubMed] [Google Scholar]
  30. Lewin B. Alternatives for splicing: recognizing the ends of introns. Cell. 1980 Nov;22(2 Pt 2):324–326. doi: 10.1016/0092-8674(80)90340-2. [DOI] [PubMed] [Google Scholar]
  31. Maniatis T., Reed R. The role of small nuclear ribonucleoprotein particles in pre-mRNA splicing. Nature. 1987 Feb 19;325(6106):673–678. doi: 10.1038/325673a0. [DOI] [PubMed] [Google Scholar]
  32. Mitchell P. J., Urlaub G., Chasin L. Spontaneous splicing mutations at the dihydrofolate reductase locus in Chinese hamster ovary cells. Mol Cell Biol. 1986 Jun;6(6):1926–1935. doi: 10.1128/mcb.6.6.1926. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Mount S. M., Pettersson I., Hinterberger M., Karmas A., Steitz J. A. The U1 small nuclear RNA-protein complex selectively binds a 5' splice site in vitro. Cell. 1983 Jun;33(2):509–518. doi: 10.1016/0092-8674(83)90432-4. [DOI] [PubMed] [Google Scholar]
  34. Munroe S. H. Antisense RNA inhibits splicing of pre-mRNA in vitro. EMBO J. 1988 Aug;7(8):2523–2532. doi: 10.1002/j.1460-2075.1988.tb03100.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Naora H., Deacon N. J. Relationship between the total size of exons and introns in protein-coding genes of higher eukaryotes. Proc Natl Acad Sci U S A. 1982 Oct;79(20):6196–6200. doi: 10.1073/pnas.79.20.6196. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Nelson K. K., Green M. R. Splice site selection and ribonucleoprotein complex assembly during in vitro pre-mRNA splicing. Genes Dev. 1988 Mar;2(3):319–329. doi: 10.1101/gad.2.3.319. [DOI] [PubMed] [Google Scholar]
  37. Ohno M., Sakamoto H., Shimura Y. Preferential excision of the 5' proximal intron from mRNA precursors with two introns as mediated by the cap structure. Proc Natl Acad Sci U S A. 1987 Aug;84(15):5187–5191. doi: 10.1073/pnas.84.15.5187. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Ohshima Y., Gotoh Y. Signals for the selection of a splice site in pre-mRNA. Computer analysis of splice junction sequences and like sequences. J Mol Biol. 1987 May 20;195(2):247–259. doi: 10.1016/0022-2836(87)90647-4. [DOI] [PubMed] [Google Scholar]
  39. Parent A., Zeitlin S., Efstratiadis A. Minimal exon sequence requirements for efficient in vitro splicing of mono-intronic nuclear pre-mRNA. J Biol Chem. 1987 Aug 15;262(23):11284–11291. [PubMed] [Google Scholar]
  40. Parker R., Siliciano P. G., Guthrie C. Recognition of the TACTAAC box during mRNA splicing in yeast involves base pairing to the U2-like snRNA. Cell. 1987 Apr 24;49(2):229–239. doi: 10.1016/0092-8674(87)90564-2. [DOI] [PubMed] [Google Scholar]
  41. Pikielny C. W., Rosbash M. mRNA splicing efficiency in yeast and the contribution of nonconserved sequences. Cell. 1985 May;41(1):119–126. doi: 10.1016/0092-8674(85)90066-2. [DOI] [PubMed] [Google Scholar]
  42. Pikielny C. W., Rymond B. C., Rosbash M. Electrophoresis of ribonucleoproteins reveals an ordered assembly pathway of yeast splicing complexes. 1986 Nov 27-Dec 3Nature. 324(6095):341–345. doi: 10.1038/324341a0. [DOI] [PubMed] [Google Scholar]
  43. Rautmann G., Breathnach R. A role for branchpoints in splicing in vivo. 1985 May 30-Jun 5Nature. 315(6018):430–432. doi: 10.1038/315430a0. [DOI] [PubMed] [Google Scholar]
  44. Rautmann G., Matthes H. W., Gait M. J., Breathnach R. Synthetic donor and acceptor splice sites function in an RNA polymerase B (II) transcription unit. EMBO J. 1984 Sep;3(9):2021–2028. doi: 10.1002/j.1460-2075.1984.tb02085.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Reed R., Maniatis T. A role for exon sequences and splice-site proximity in splice-site selection. Cell. 1986 Aug 29;46(5):681–690. doi: 10.1016/0092-8674(86)90343-0. [DOI] [PubMed] [Google Scholar]
  46. Reed R., Maniatis T. Intron sequences involved in lariat formation during pre-mRNA splicing. Cell. 1985 May;41(1):95–105. doi: 10.1016/0092-8674(85)90064-9. [DOI] [PubMed] [Google Scholar]
  47. Ruby S. W., Abelson J. An early hierarchic role of U1 small nuclear ribonucleoprotein in spliceosome assembly. Science. 1988 Nov 18;242(4881):1028–1035. doi: 10.1126/science.2973660. [DOI] [PubMed] [Google Scholar]
  48. Ruskin B., Green M. R. Specific and stable intron-factor interactions are established early during in vitro pre-mRNA splicing. Cell. 1985 Nov;43(1):131–142. doi: 10.1016/0092-8674(85)90018-2. [DOI] [PubMed] [Google Scholar]
  49. Ruskin B., Greene J. M., Green M. R. Cryptic branch point activation allows accurate in vitro splicing of human beta-globin intron mutants. Cell. 1985 Jul;41(3):833–844. doi: 10.1016/s0092-8674(85)80064-7. [DOI] [PubMed] [Google Scholar]
  50. Sharp P. A. Speculations on RNA splicing. Cell. 1981 Mar;23(3):643–646. doi: 10.1016/0092-8674(81)90425-6. [DOI] [PubMed] [Google Scholar]
  51. Sharp P. A. Splicing of messenger RNA precursors. Science. 1987 Feb 13;235(4790):766–771. doi: 10.1126/science.3544217. [DOI] [PubMed] [Google Scholar]
  52. Solnick D. Alternative splicing caused by RNA secondary structure. Cell. 1985 Dec;43(3 Pt 2):667–676. doi: 10.1016/0092-8674(85)90239-9. [DOI] [PubMed] [Google Scholar]
  53. Somasekhar M. B., Mertz J. E. Exon mutations that affect the choice of splice sites used in processing the SV40 late transcripts. Nucleic Acids Res. 1985 Aug 12;13(15):5591–5609. doi: 10.1093/nar/13.15.5591. [DOI] [PMC free article] [PubMed] [Google Scholar]
  54. Tazi J., Alibert C., Temsamani J., Reveillaud I., Cathala G., Brunel C., Jeanteur P. A protein that specifically recognizes the 3' splice site of mammalian pre-mRNA introns is associated with a small nuclear ribonucleoprotein. Cell. 1986 Dec 5;47(5):755–766. doi: 10.1016/0092-8674(86)90518-0. [DOI] [PubMed] [Google Scholar]
  55. Treisman R., Orkin S. H., Maniatis T. Specific transcription and RNA splicing defects in five cloned beta-thalassaemia genes. Nature. 1983 Apr 14;302(5909):591–596. doi: 10.1038/302591a0. [DOI] [PubMed] [Google Scholar]
  56. Treisman R., Orkin S. H., Maniatis T. Structural and functional defects in beta-thalassemia. Prog Clin Biol Res. 1983;134:99–121. [PubMed] [Google Scholar]
  57. Treisman R., Proudfoot N. J., Shander M., Maniatis T. A single-base change at a splice site in a beta 0-thalassemic gene causes abnormal RNA splicing. Cell. 1982 Jul;29(3):903–911. doi: 10.1016/0092-8674(82)90452-4. [DOI] [PubMed] [Google Scholar]
  58. Wieringa B., Hofer E., Weissmann C. A minimal intron length but no specific internal sequence is required for splicing the large rabbit beta-globin intron. Cell. 1984 Jul;37(3):915–925. doi: 10.1016/0092-8674(84)90426-4. [DOI] [PubMed] [Google Scholar]
  59. Zapp M. L., Berget S. M. Evidence for nuclear factors involved in recognition of 5' splice sites. Nucleic Acids Res. 1989 Apr 11;17(7):2655–2674. doi: 10.1093/nar/17.7.2655. [DOI] [PMC free article] [PubMed] [Google Scholar]
  60. Zhuang Y., Weiner A. M. A compensatory base change in U1 snRNA suppresses a 5' splice site mutation. Cell. 1986 Sep 12;46(6):827–835. doi: 10.1016/0092-8674(86)90064-4. [DOI] [PubMed] [Google Scholar]
  61. Zillmann M., Rose S. D., Berget S. M. U1 small nuclear ribonucleoproteins are required early during spliceosome assembly. Mol Cell Biol. 1987 Aug;7(8):2877–2883. doi: 10.1128/mcb.7.8.2877. [DOI] [PMC free article] [PubMed] [Google Scholar]
  62. Zillmann M., Zapp M. L., Berget S. M. Gel electrophoretic isolation of splicing complexes containing U1 small nuclear ribonucleoprotein particles. Mol Cell Biol. 1988 Feb;8(2):814–821. doi: 10.1128/mcb.8.2.814. [DOI] [PMC free article] [PubMed] [Google Scholar]

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