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. 1992 Dec 11;20(23):6153–6157. doi: 10.1093/nar/20.23.6153

Protein splicing removes intervening sequences in an archaea DNA polymerase.

R A Hodges 1, F B Perler 1, C J Noren 1, W E Jack 1
PMCID: PMC334498  PMID: 1475179

Abstract

The Vent DNA polymerase gene from Thermococcus litoralis contains two in-frame insertions that must be spliced out to form the mature polymerase. Primer extension and cDNA PCR revealed no evidence of spliced RNA to account for this editing. In contrast, pulse-chase analysis indicated that expression constructs lacking the first insertion produced a protein precursor in Escherichia coli that was processed post-translationally to form polymerase and I-TliI, the endonuclease protein that is the product of the second insertion. At least one intermediate, which migrated more slowly than the precursor and may be branched, was also detected. Amino acid substitutions at the splice junction slowed or blocked the protein splicing reaction. Processing occurs in several heterologous systems, indicating either self-splicing or ubiquitous splicing factors. Processing occurs in a mutant lacking I-TliI endonuclease activity, establishing the independence of splicing and endonuclease activities.

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Selected References

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

  1. Belfort M. Phage T4 introns: self-splicing and mobility. Annu Rev Genet. 1990;24:363–385. doi: 10.1146/annurev.ge.24.120190.002051. [DOI] [PubMed] [Google Scholar]
  2. Cech T. R. Self-splicing of group I introns. Annu Rev Biochem. 1990;59:543–568. doi: 10.1146/annurev.bi.59.070190.002551. [DOI] [PubMed] [Google Scholar]
  3. Chomczynski P., Sacchi N. Single-step method of RNA isolation by acid guanidinium thiocyanate-phenol-chloroform extraction. Anal Biochem. 1987 Apr;162(1):156–159. doi: 10.1006/abio.1987.9999. [DOI] [PubMed] [Google Scholar]
  4. Dalbadie-McFarland G., Neitzel J. J., Richards J. H. Active-site mutants of beta-lactamase: use of an inactive double mutant to study requirements for catalysis. Biochemistry. 1986 Jan 28;25(2):332–338. doi: 10.1021/bi00350a008. [DOI] [PubMed] [Google Scholar]
  5. Davis E. O., Jenner P. J., Brooks P. C., Colston M. J., Sedgwick S. G. Protein splicing in the maturation of M. tuberculosis recA protein: a mechanism for tolerating a novel class of intervening sequence. Cell. 1992 Oct 16;71(2):201–210. doi: 10.1016/0092-8674(92)90349-h. [DOI] [PubMed] [Google Scholar]
  6. Davis E. O., Sedgwick S. G., Colston M. J. Novel structure of the recA locus of Mycobacterium tuberculosis implies processing of the gene product. J Bacteriol. 1991 Sep;173(18):5653–5662. doi: 10.1128/jb.173.18.5653-5662.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Frohman M. A., Dush M. K., Martin G. R. Rapid production of full-length cDNAs from rare transcripts: amplification using a single gene-specific oligonucleotide primer. Proc Natl Acad Sci U S A. 1988 Dec;85(23):8998–9002. doi: 10.1073/pnas.85.23.8998. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Garcia G. M., Mar P. K., Mullin D. A., Walker J. R., Prather N. E. The E. coli dnaY gene encodes an arginine transfer RNA. Cell. 1986 May 9;45(3):453–459. doi: 10.1016/0092-8674(86)90331-4. [DOI] [PubMed] [Google Scholar]
  9. Gimble F. S., Thorner J. Homing of a DNA endonuclease gene by meiotic gene conversion in Saccharomyces cerevisiae. Nature. 1992 May 28;357(6376):301–306. doi: 10.1038/357301a0. [DOI] [PubMed] [Google Scholar]
  10. Higaki J. N., Evnin L. B., Craik C. S. Introduction of a cysteine protease active site into trypsin. Biochemistry. 1989 Nov 28;28(24):9256–9263. doi: 10.1021/bi00450a004. [DOI] [PubMed] [Google Scholar]
  11. Hirata R., Ohsumk Y., Nakano A., Kawasaki H., Suzuki K., Anraku Y. Molecular structure of a gene, VMA1, encoding the catalytic subunit of H(+)-translocating adenosine triphosphatase from vacuolar membranes of Saccharomyces cerevisiae. J Biol Chem. 1990 Apr 25;265(12):6726–6733. [PubMed] [Google Scholar]
  12. Hunter D. J., Williams K., Cartinhour S., Herrick G. Precise excision of telomere-bearing transposons during Oxytricha fallax macronuclear development. Genes Dev. 1989 Dec;3(12B):2101–2112. doi: 10.1101/gad.3.12b.2101. [DOI] [PubMed] [Google Scholar]
  13. Kane P. M., Yamashiro C. T., Wolczyk D. F., Neff N., Goebl M., Stevens T. H. Protein splicing converts the yeast TFP1 gene product to the 69-kD subunit of the vacuolar H(+)-adenosine triphosphatase. Science. 1990 Nov 2;250(4981):651–657. doi: 10.1126/science.2146742. [DOI] [PubMed] [Google Scholar]
  14. Neet K. E., Koshland D. E., Jr The conversion of serine at the active site of subtilisin to cysteine: a "chemical mutation". Proc Natl Acad Sci U S A. 1966 Nov;56(5):1606–1611. doi: 10.1073/pnas.56.5.1606. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Perler F. B., Comb D. G., Jack W. E., Moran L. S., Qiang B., Kucera R. B., Benner J., Slatko B. E., Nwankwo D. O., Hempstead S. K. Intervening sequences in an Archaea DNA polymerase gene. Proc Natl Acad Sci U S A. 1992 Jun 15;89(12):5577–5581. doi: 10.1073/pnas.89.12.5577. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Rymond B. C., Pikielny C., Seraphin B., Legrain P., Rosbash M. Measurement and analysis of yeast pre-mRNA sequence contribution to splicing efficiency. Methods Enzymol. 1990;181:122–147. doi: 10.1016/0076-6879(90)81116-c. [DOI] [PubMed] [Google Scholar]
  17. Sigal I. S., DeGrado W. F., Thomas B. J., Petteway S. R., Jr Purification and properties of thiol beta-lactamase. A mutant of pBR322 beta-lactamase in which the active site serine has been replaced with cysteine. J Biol Chem. 1984 Apr 25;259(8):5327–5332. [PubMed] [Google Scholar]
  18. Studier F. W., Rosenberg A. H., Dunn J. J., Dubendorff J. W. Use of T7 RNA polymerase to direct expression of cloned genes. Methods Enzymol. 1990;185:60–89. doi: 10.1016/0076-6879(90)85008-c. [DOI] [PubMed] [Google Scholar]

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