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. 1990 Jan 11;18(1):143–149. doi: 10.1093/nar/18.1.143

Splicing of a C. elegans myosin pre-mRNA in a human nuclear extract.

S C Ogg 1, P Anderson 1, M P Wickens 1
PMCID: PMC330214  PMID: 2308820

Abstract

Splicing of mammalian introns requires that the intron possess at least 80 nucleotides. This length requirement presumably reflects the constraints of accommodating multiple snRNPs simultaneously in the same intron. In the free-living nematode, C. elegans, introns typically are 45 to 55 nucleotides in length. In this report, we determine whether C. elegans introns can obviate the mammalian length requirement by virtue of their structure or sequence. We demonstrate that a 53 nucleotide intron from the unc-54 gene of C. elegans does not undergo splicing in a mammalian (HeLa) nuclear extract. However, insertion of 31 nucleotides of foreign, prokaryotic sequence into the same intron results in efficient splicing. The observed splicing proceeds by the same two-step mechanism observed with mammalian introns, and exploits the same 3' and 5' splice sites as are used in C. elegans. The branch point used lies in the inserted sequence. We conclude that C. elegans splicing components are either fewer in number or smaller than their mammalian counterparts.

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Selected References

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

  1. Blumenthal T., Thomas J. Cis and trans mRNA splicing in C. elegans. Trends Genet. 1988 Nov;4(11):305–308. doi: 10.1016/0168-9525(88)90107-2. [DOI] [PubMed] [Google Scholar]
  2. Conway L., Wickens M. Analysis of mRNA 3' end formation by modification interference: the only modifications which prevent processing lie in AAUAAA and the poly(A) site. EMBO J. 1987 Dec 20;6(13):4177–4184. doi: 10.1002/j.1460-2075.1987.tb02764.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Dignam J. D., Lebovitz R. M., Roeder R. G. Accurate transcription initiation by RNA polymerase II in a soluble extract from isolated mammalian nuclei. Nucleic Acids Res. 1983 Mar 11;11(5):1475–1489. doi: 10.1093/nar/11.5.1475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Fu X. Y., Colgan J. D., Manley J. L. Multiple cis-acting sequence elements are required for efficient splicing of simian virus 40 small-t antigen pre-mRNA. Mol Cell Biol. 1988 Sep;8(9):3582–3590. doi: 10.1128/mcb.8.9.3582. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. 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]
  6. 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]
  7. Karn J., Brenner S., Barnett L. Protein structural domains in the Caenorhabditis elegans unc-54 myosin heavy chain gene are not separated by introns. Proc Natl Acad Sci U S A. 1983 Jul;80(14):4253–4257. doi: 10.1073/pnas.80.14.4253. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Konarska M. M., Padgett R. A., Sharp P. A. Recognition of cap structure in splicing in vitro of mRNA precursors. Cell. 1984 Oct;38(3):731–736. doi: 10.1016/0092-8674(84)90268-x. [DOI] [PubMed] [Google Scholar]
  9. Krainer A. R., Maniatis T., Ruskin B., Green M. R. Normal and mutant human beta-globin pre-mRNAs are faithfully and efficiently spliced in vitro. Cell. 1984 Apr;36(4):993–1005. doi: 10.1016/0092-8674(84)90049-7. [DOI] [PubMed] [Google Scholar]
  10. Melton D. A., Krieg P. A., Rebagliati M. R., Maniatis T., Zinn K., Green M. R. Efficient in vitro synthesis of biologically active RNA and RNA hybridization probes from plasmids containing a bacteriophage SP6 promoter. Nucleic Acids Res. 1984 Sep 25;12(18):7035–7056. doi: 10.1093/nar/12.18.7035. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Nielsen D. A., Shapiro D. J. Preparation of capped RNA transcripts using T7 RNA polymerase. Nucleic Acids Res. 1986 Jul 25;14(14):5936–5936. doi: 10.1093/nar/14.14.5936. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Noble J. C., Prives C., Manley J. L. Alternative splicing of SV40 early pre-mRNA is determined by branch site selection. Genes Dev. 1988 Nov;2(11):1460–1475. doi: 10.1101/gad.2.11.1460. [DOI] [PubMed] [Google Scholar]
  13. Padgett R. A., Grabowski P. J., Konarska M. M., Seiler S., Sharp P. A. Splicing of messenger RNA precursors. Annu Rev Biochem. 1986;55:1119–1150. doi: 10.1146/annurev.bi.55.070186.005351. [DOI] [PubMed] [Google Scholar]
  14. Padgett R. A., Konarska M. M., Grabowski P. J., Hardy S. F., Sharp P. A. Lariat RNA's as intermediates and products in the splicing of messenger RNA precursors. Science. 1984 Aug 31;225(4665):898–903. doi: 10.1126/science.6206566. [DOI] [PubMed] [Google Scholar]
  15. Peattie D. A. Direct chemical method for sequencing RNA. Proc Natl Acad Sci U S A. 1979 Apr;76(4):1760–1764. doi: 10.1073/pnas.76.4.1760. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. 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]
  17. 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]
  18. Ruskin B., Krainer A. R., Maniatis T., Green M. R. Excision of an intact intron as a novel lariat structure during pre-mRNA splicing in vitro. Cell. 1984 Aug;38(1):317–331. doi: 10.1016/0092-8674(84)90553-1. [DOI] [PubMed] [Google Scholar]
  19. Sanger F., Coulson A. R. The use of thin acrylamide gels for DNA sequencing. FEBS Lett. 1978 Mar 1;87(1):107–110. doi: 10.1016/0014-5793(78)80145-8. [DOI] [PubMed] [Google Scholar]
  20. Thomas J. D., Conrad R. C., Blumenthal T. The C. elegans trans-spliced leader RNA is bound to Sm and has a trimethylguanosine cap. Cell. 1988 Aug 12;54(4):533–539. doi: 10.1016/0092-8674(88)90075-x. [DOI] [PubMed] [Google Scholar]
  21. 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]

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