Abstract
We have identified a new Saccharomyces cerevisiae gene, MLH1 (mutL homolog), that encodes a predicted protein product with sequence similarity to DNA mismatch repair proteins of bacteria (MutL and HexB) and S. cerevisiae yeast (PMS1). Disruption of the MLH1 gene results in elevated spontaneous mutation rates during vegetative growth as measured by forward mutation to canavanine resistance and reversion of the hom3-10 allele. Additionally, the mlh1 delta mutant displays a dramatic increase in the instability of simple sequence repeats, i.e., (GT)n (M. Strand, T. A. Prolla, R. M. Liskay, and T. D. Petes, Nature [London] 365:274-276, 1993). Meiotic studies indicate that disruption of the MLH1 gene in diploid strains causes increased spore lethality, presumably due to the accumulation of recessive lethal mutations, and increased postmeiotic segregation at each of four loci, the latter being indicative of inefficient repair of heteroduplex DNA generated during genetic recombination. mlh1 delta mutants, which should represent the null phenotype, show the same mutator and meiotic phenotypes as isogenic pms1 delta mutants. Interestingly, mutator and meiotic phenotypes of the mlh1 delta pms1 delta double mutant are indistinguishable from those of the mlh1 delta and pms1 delta single mutants. On the basis of our data, we suggest that in contrast to Escherichia coli, there are two MutL/HexB-like proteins in S. cerevisiae and that each is a required component of the same DNA mismatch repair pathway.
Full text
PDFSelected References
These references are in PubMed. This may not be the complete list of references from this article.
- Aaltonen L. A., Peltomäki P., Leach F. S., Sistonen P., Pylkkänen L., Mecklin J. P., Järvinen H., Powell S. M., Jen J., Hamilton S. R. Clues to the pathogenesis of familial colorectal cancer. Science. 1993 May 7;260(5109):812–816. doi: 10.1126/science.8484121. [DOI] [PubMed] [Google Scholar]
- Au K. G., Welsh K., Modrich P. Initiation of methyl-directed mismatch repair. J Biol Chem. 1992 Jun 15;267(17):12142–12148. [PubMed] [Google Scholar]
- Bailis A. M., Rothstein R. A defect in mismatch repair in Saccharomyces cerevisiae stimulates ectopic recombination between homeologous genes by an excision repair dependent process. Genetics. 1990 Nov;126(3):535–547. doi: 10.1093/genetics/126.3.535. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bishop D. K., Andersen J., Kolodner R. D. Specificity of mismatch repair following transformation of Saccharomyces cerevisiae with heteroduplex plasmid DNA. Proc Natl Acad Sci U S A. 1989 May;86(10):3713–3717. doi: 10.1073/pnas.86.10.3713. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Bishop D. K., Williamson M. S., Fogel S., Kolodner R. D. The role of heteroduplex correction in gene conversion in Saccharomyces cerevisiae. Nature. 1987 Jul 23;328(6128):362–364. doi: 10.1038/328362a0. [DOI] [PubMed] [Google Scholar]
- Chu G., Vollrath D., Davis R. W. Separation of large DNA molecules by contour-clamped homogeneous electric fields. Science. 1986 Dec 19;234(4783):1582–1585. doi: 10.1126/science.3538420. [DOI] [PubMed] [Google Scholar]
- Church G. M., Gilbert W. Genomic sequencing. Proc Natl Acad Sci U S A. 1984 Apr;81(7):1991–1995. doi: 10.1073/pnas.81.7.1991. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Detloff P., Sieber J., Petes T. D. Repair of specific base pair mismatches formed during meiotic recombination in the yeast Saccharomyces cerevisiae. Mol Cell Biol. 1991 Feb;11(2):737–745. doi: 10.1128/mcb.11.2.737. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Feinberg A. P., Vogelstein B. A technique for radiolabeling DNA restriction endonuclease fragments to high specific activity. Anal Biochem. 1983 Jul 1;132(1):6–13. doi: 10.1016/0003-2697(83)90418-9. [DOI] [PubMed] [Google Scholar]
- Fleck O., Michael H., Heim L. The swi4+ gene of Schizosaccharomyces pombe encodes a homologue of mismatch repair enzymes. Nucleic Acids Res. 1992 May 11;20(9):2271–2278. doi: 10.1093/nar/20.9.2271. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Fujii H., Shimada T. Isolation and characterization of cDNA clones derived from the divergently transcribed gene in the region upstream from the human dihydrofolate reductase gene. J Biol Chem. 1989 Jun 15;264(17):10057–10064. [PubMed] [Google Scholar]
- Goto T., Wang J. C. Cloning of yeast TOP1, the gene encoding DNA topoisomerase I, and construction of mutants defective in both DNA topoisomerase I and DNA topoisomerase II. Proc Natl Acad Sci U S A. 1985 Nov;82(21):7178–7182. doi: 10.1073/pnas.82.21.7178. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Gould S. J., Subramani S., Scheffler I. E. Use of the DNA polymerase chain reaction for homology probing: isolation of partial cDNA or genomic clones encoding the iron-sulfur protein of succinate dehydrogenase from several species. Proc Natl Acad Sci U S A. 1989 Mar;86(6):1934–1938. doi: 10.1073/pnas.86.6.1934. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grilley M., Holmes J., Yashar B., Modrich P. Mechanisms of DNA-mismatch correction. Mutat Res. 1990 Sep-Nov;236(2-3):253–267. doi: 10.1016/0921-8777(90)90009-t. [DOI] [PubMed] [Google Scholar]
- Grilley M., Welsh K. M., Su S. S., Modrich P. Isolation and characterization of the Escherichia coli mutL gene product. J Biol Chem. 1989 Jan 15;264(2):1000–1004. [PubMed] [Google Scholar]
- Haber L. T., Pang P. P., Sobell D. I., Mankovich J. A., Walker G. C. Nucleotide sequence of the Salmonella typhimurium mutS gene required for mismatch repair: homology of MutS and HexA of Streptococcus pneumoniae. J Bacteriol. 1988 Jan;170(1):197–202. doi: 10.1128/jb.170.1.197-202.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hickson I. D., Arthur H. M., Bramhill D., Emmerson P. T. The E. coli uvrD gene product is DNA helicase II. Mol Gen Genet. 1983;190(2):265–270. doi: 10.1007/BF00330649. [DOI] [PubMed] [Google Scholar]
- Ionov Y., Peinado M. A., Malkhosyan S., Shibata D., Perucho M. Ubiquitous somatic mutations in simple repeated sequences reveal a new mechanism for colonic carcinogenesis. Nature. 1993 Jun 10;363(6429):558–561. doi: 10.1038/363558a0. [DOI] [PubMed] [Google Scholar]
- Irie K., Takase M., Lee K. S., Levin D. E., Araki H., Matsumoto K., Oshima Y. MKK1 and MKK2, which encode Saccharomyces cerevisiae mitogen-activated protein kinase-kinase homologs, function in the pathway mediated by protein kinase C. Mol Cell Biol. 1993 May;13(5):3076–3083. doi: 10.1128/mcb.13.5.3076. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ito H., Fukuda Y., Murata K., Kimura A. Transformation of intact yeast cells treated with alkali cations. J Bacteriol. 1983 Jan;153(1):163–168. doi: 10.1128/jb.153.1.163-168.1983. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kataoka T., Powers S., McGill C., Fasano O., Strathern J., Broach J., Wigler M. Genetic analysis of yeast RAS1 and RAS2 genes. Cell. 1984 Jun;37(2):437–445. doi: 10.1016/0092-8674(84)90374-x. [DOI] [PubMed] [Google Scholar]
- Kramer B., Kramer W., Williamson M. S., Fogel S. Heteroduplex DNA correction in Saccharomyces cerevisiae is mismatch specific and requires functional PMS genes. Mol Cell Biol. 1989 Oct;9(10):4432–4440. doi: 10.1128/mcb.9.10.4432. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kramer W., Kramer B., Williamson M. S., Fogel S. Cloning and nucleotide sequence of DNA mismatch repair gene PMS1 from Saccharomyces cerevisiae: homology of PMS1 to procaryotic MutL and HexB. J Bacteriol. 1989 Oct;171(10):5339–5346. doi: 10.1128/jb.171.10.5339-5346.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lahue R. S., Au K. G., Modrich P. DNA mismatch correction in a defined system. Science. 1989 Jul 14;245(4914):160–164. doi: 10.1126/science.2665076. [DOI] [PubMed] [Google Scholar]
- Linton J. P., Yen J. Y., Selby E., Chen Z., Chinsky J. M., Liu K., Kellems R. E., Crouse G. F. Dual bidirectional promoters at the mouse dhfr locus: cloning and characterization of two mRNA classes of the divergently transcribed Rep-1 gene. Mol Cell Biol. 1989 Jul;9(7):3058–3072. doi: 10.1128/mcb.9.7.3058. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Luria S. E., Delbrück M. Mutations of Bacteria from Virus Sensitivity to Virus Resistance. Genetics. 1943 Nov;28(6):491–511. doi: 10.1093/genetics/28.6.491. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Mankovich J. A., McIntyre C. A., Walker G. C. Nucleotide sequence of the Salmonella typhimurium mutL gene required for mismatch repair: homology of MutL to HexB of Streptococcus pneumoniae and to PMS1 of the yeast Saccharomyces cerevisiae. J Bacteriol. 1989 Oct;171(10):5325–5331. doi: 10.1128/jb.171.10.5325-5331.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Miret J. J., Milla M. G., Lahue R. S. Characterization of a DNA mismatch-binding activity in yeast extracts. J Biol Chem. 1993 Feb 15;268(5):3507–3513. [PubMed] [Google Scholar]
- Modrich P. DNA mismatch correction. Annu Rev Biochem. 1987;56:435–466. doi: 10.1146/annurev.bi.56.070187.002251. [DOI] [PubMed] [Google Scholar]
- Peltomäki P., Aaltonen L. A., Sistonen P., Pylkkänen L., Mecklin J. P., Järvinen H., Green J. S., Jass J. R., Weber J. L., Leach F. S. Genetic mapping of a locus predisposing to human colorectal cancer. Science. 1993 May 7;260(5109):810–812. doi: 10.1126/science.8484120. [DOI] [PubMed] [Google Scholar]
- Priebe S. D., Hadi S. M., Greenberg B., Lacks S. A. Nucleotide sequence of the hexA gene for DNA mismatch repair in Streptococcus pneumoniae and homology of hexA to mutS of Escherichia coli and Salmonella typhimurium. J Bacteriol. 1988 Jan;170(1):190–196. doi: 10.1128/jb.170.1.190-196.1988. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Proffitt J. H., Davie J. R., Swinton D., Hattman S. 5-Methylcytosine is not detectable in Saccharomyces cerevisiae DNA. Mol Cell Biol. 1984 May;4(5):985–988. doi: 10.1128/mcb.4.5.985. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Prudhomme M., Martin B., Mejean V., Claverys J. P. Nucleotide sequence of the Streptococcus pneumoniae hexB mismatch repair gene: homology of HexB to MutL of Salmonella typhimurium and to PMS1 of Saccharomyces cerevisiae. J Bacteriol. 1989 Oct;171(10):5332–5338. doi: 10.1128/jb.171.10.5332-5338.1989. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rayssiguier C., Thaler D. S., Radman M. The barrier to recombination between Escherichia coli and Salmonella typhimurium is disrupted in mismatch-repair mutants. Nature. 1989 Nov 23;342(6248):396–401. doi: 10.1038/342396a0. [DOI] [PubMed] [Google Scholar]
- Reenan R. A., Kolodner R. D. Characterization of insertion mutations in the Saccharomyces cerevisiae MSH1 and MSH2 genes: evidence for separate mitochondrial and nuclear functions. Genetics. 1992 Dec;132(4):975–985. doi: 10.1093/genetics/132.4.975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Reenan R. A., Kolodner R. D. Isolation and characterization of two Saccharomyces cerevisiae genes encoding homologs of the bacterial HexA and MutS mismatch repair proteins. Genetics. 1992 Dec;132(4):963–973. doi: 10.1093/genetics/132.4.963. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Resnick M. A., Zgaga Z., Hieter P., Westmoreland J., Fogel S., Nilsson-Tillgren T. Recombinant repair of diverged DNAs: a study of homoeologous chromosomes and mammalian YACs in yeast. Mol Gen Genet. 1992 Jul;234(1):65–73. doi: 10.1007/BF00272346. [DOI] [PubMed] [Google Scholar]
- Richardson W. D., Roberts B. L., Smith A. E. Nuclear location signals in polyoma virus large-T. Cell. 1986 Jan 17;44(1):77–85. doi: 10.1016/0092-8674(86)90486-1. [DOI] [PubMed] [Google Scholar]
- Rothstein R. J. One-step gene disruption in yeast. Methods Enzymol. 1983;101:202–211. doi: 10.1016/0076-6879(83)01015-0. [DOI] [PubMed] [Google Scholar]
- Rykowski M. C., Wallis J. W., Choe J., Grunstein M. Histone H2B subtypes are dispensable during the yeast cell cycle. Cell. 1981 Aug;25(2):477–487. doi: 10.1016/0092-8674(81)90066-0. [DOI] [PubMed] [Google Scholar]
- Saiki R. K., Gelfand D. H., Stoffel S., Scharf S. J., Higuchi R., Horn G. T., Mullis K. B., Erlich H. A. Primer-directed enzymatic amplification of DNA with a thermostable DNA polymerase. Science. 1988 Jan 29;239(4839):487–491. doi: 10.1126/science.2448875. [DOI] [PubMed] [Google Scholar]
- Sancar A., Hearst J. E. Molecular matchmakers. Science. 1993 Mar 5;259(5100):1415–1420. doi: 10.1126/science.8451638. [DOI] [PubMed] [Google Scholar]
- Scherer S., Davis R. W. Replacement of chromosome segments with altered DNA sequences constructed in vitro. Proc Natl Acad Sci U S A. 1979 Oct;76(10):4951–4955. doi: 10.1073/pnas.76.10.4951. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Schär P., Munz P., Kohli J. Meiotic mismatch repair quantified on the basis of segregation patterns in Schizosaccharomyces pombe. Genetics. 1993 Apr;133(4):815–824. doi: 10.1093/genetics/133.4.815. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sikorski R. S., Boeke J. D. In vitro mutagenesis and plasmid shuffling: from cloned gene to mutant yeast. Methods Enzymol. 1991;194:302–318. doi: 10.1016/0076-6879(91)94023-6. [DOI] [PubMed] [Google Scholar]
- Southern E. M. Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol. 1975 Nov 5;98(3):503–517. doi: 10.1016/s0022-2836(75)80083-0. [DOI] [PubMed] [Google Scholar]
- Strand M., Prolla T. A., Liskay R. M., Petes T. D. Destabilization of tracts of simple repetitive DNA in yeast by mutations affecting DNA mismatch repair. Nature. 1993 Sep 16;365(6443):274–276. doi: 10.1038/365274a0. [DOI] [PubMed] [Google Scholar]
- Su S. S., Lahue R. S., Au K. G., Modrich P. Mispair specificity of methyl-directed DNA mismatch correction in vitro. J Biol Chem. 1988 May 15;263(14):6829–6835. [PubMed] [Google Scholar]
- Su S. S., Modrich P. Escherichia coli mutS-encoded protein binds to mismatched DNA base pairs. Proc Natl Acad Sci U S A. 1986 Jul;83(14):5057–5061. doi: 10.1073/pnas.83.14.5057. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Szostak J. W., Orr-Weaver T. L., Rothstein R. J., Stahl F. W. The double-strand-break repair model for recombination. Cell. 1983 May;33(1):25–35. doi: 10.1016/0092-8674(83)90331-8. [DOI] [PubMed] [Google Scholar]
- Thibodeau S. N., Bren G., Schaid D. Microsatellite instability in cancer of the proximal colon. Science. 1993 May 7;260(5109):816–819. doi: 10.1126/science.8484122. [DOI] [PubMed] [Google Scholar]
- Valle G., Bergantino E., Lanfranchi G., Carignani G. The sequence of a 6.3 kb segment of yeast chromosome III reveals an open reading frame coding for a putative mismatch binding protein. Yeast. 1991 Dec;7(9):981–988. doi: 10.1002/yea.320070910. [DOI] [PubMed] [Google Scholar]
- Welsh K. M., Lu A. L., Clark S., Modrich P. Isolation and characterization of the Escherichia coli mutH gene product. J Biol Chem. 1987 Nov 15;262(32):15624–15629. [PubMed] [Google Scholar]
- Williamson M. S., Game J. C., Fogel S. Meiotic gene conversion mutants in Saccharomyces cerevisiae. I. Isolation and characterization of pms1-1 and pms1-2. Genetics. 1985 Aug;110(4):609–646. doi: 10.1093/genetics/110.4.609. [DOI] [PMC free article] [PubMed] [Google Scholar]