Abstract
Exonuclease 1, a class III member of the RAD2 nuclease family, is a structure-specific nuclease involved in DNA metabolism (replication, repair and recombination). We have identified a homologue to Exonuclease-1 from rice (Oryza sativa L. cv. Nipponbare) and have designated it O. sativa Exonuclease-1 (OsEXO1). The open reading frame of OsEXO1 encodes a predicted product of 836 amino acid residues with a molecular weight of 92 kDa. Two highly conserved nuclease domains (XPG-N and XPG-I) are present in the N-terminal region of the protein. OsEXO1-sGFP fusion protein transiently overexpressed in the onion epidermal cells localized to the nucleus. The transcript of OsEXO1 is highly expressed in meristematic tissues and panicles. Inhibition of cell proliferation by removal of sucrose from the medium or by the addition of cell cycle inhibitors decreased OsEXO1 expression. Functional complementation assays using yeast RAD2 member null mutants demonstrates that OsEXO1 is able to substitute for ScEXO1 and ScRAD27 functions. Yeast two-hybrid analysis shows that OsEXO1 interacted with rice DNA polymerase λ (OsPol λ), the 70 kDa subunit b of rice replication protein A (OsRPA70b), and the 32 kDa subunit 1 of rice replication protein A (OsRPA32-1). Irradiation of UV-B induces OsEXO1 expression while hydrogen peroxide treatment represses it. These results suggest that OsEXO1 plays an important role in both cell proliferation and UV-damaged nuclear DNA repair pathway under dark conditions.
Similar content being viewed by others
Abbreviations
- EXO1:
-
Exonuclease-1
- FEN-1:
-
Flap endonuclease-1
- Pol:
-
DNA polymerase
- RACE:
-
Rapid amplification of cDNA ends
- RPA:
-
Replication protein A
References
Alleva JL, Doetsch PW (1998) Characterization of Schizosaccharomyces pombe Rad2 protein, a FEN-1 homolog. Nucleic Acids Res 26:3645–3650
Amin NS, Nguyen M, Oh S, Kolodner RD (2001) exo1-dependent mutator mutations: model system for studying functional interactions in mismatch repair. Mol Cell Biol 21:5142–5155
Baba A, Hasegawa S, Syono K (1986) Cultivation of rice protoplasts and their transformation mediated by Agrobacterium spheroplasts. Plant Cell Physiol 27:463–471
Bardwell PD, Woo CJ, Wei K, Li Z, Martin A, Sack SZ, Parris T, Edelmann W, Scharff MD (2004) Altered somatic hypermutation and reduced class-switch recombination in exonuclease 1-mutant mice. Nat Immunol 5:224–229
Bertuch AA, Lundblad V (2004) EXO1 contributes to telomere maintenance in both telomerase-proficient and telomerase-deficient Saccharomyces cerevisiae. Genetics 166:1651–1659
Britt AB (1999) Molecular genetics of DNA repair in higher plants. Trends Plant Sci 4:20–25
Britt AB, Chen JJ, Wykoff D, Mitchell D (1993) A UV-sensitive mutant of Arabidopsis defective in the repair of pyrimidine–pyrimidine (6–4) dimers. Science 261:1571–1574
Calleja FMGR, Nivard MJM, Eeken JCJ (2001) Induced mutagenic effects in the nucleotide excision repair deficient Drosophila mutantmus201D1, expressing a truncated XPG protein. Mutat Res 461:279–288
Constantinou A, Gunz D, Evans E, Lalle P, Bates PA, Wood RD, Clarkson SG (1999) Conserved residues of human XPG protein important for nuclease activity and function in nucleotide excision repair. J Biol Chem 274:5637–5648
Davies AA, Friedberg EC, Tomkinson AE, Wood RD, West SC (1995) Role of the Rad1 and Rad10 proteins in nucleotide excision repair and recombination. J Biol Chem 270:24638–24641
Doherty KM, Sharma S, Uzdilla LA, Wilson TM, Cui S, Vindigni A, Brosh RM Jr (2005) RecQ1 helicase interacts with human mismatch repair factors that regulate genetic recombination. J Biol Chem 280:28085–28094
Evans E, Fellows J, Coffer A, Wood RD (1997) Open complex formation around a lesion during nucleotide excision repair provides a structure for cleavage by human XPG protein. EMBO J 16:625–638
Fidantsef AL, Mitchell DL, Britt AB (2000) The Arabidopsis UVH1 gene is a homolog of the yeast repair endonuclease RAD1. Plant Physiol 124:579–586
Fiorentini P, Huang KN, Tishkoff DX, Kolodner RD, Symington LS (1997) Exonuclease I of Saccharomyces cerevisiae functions in mitotic recombination in vivo and in vitro. Mol Cell Biol 17:2764–2773
Furukawa T, Kimura S, Ishibashi T, Mori Y, Hashimoto J, Sakaguchi K (2003) OsSEND-1: a new RAD2 nuclease family member in higher plants. Plant Mol Biol 51:59–70
Gallego F, Fleck O, Li A, Wyrzykowska J, Tinland B (2000) AtRAD1, a plant homologue of human and yeast nucleotide excision repair endonuclease, is involved in dark repair of UV damages and recombination. Plant J 21:507–518
Habraken Y, Sung P, Prakash L, Prakash S (1993) Yeast excision repair gene RAD2 encodes a single-stranded DNA endonuclease. Nature 366:365–368
Hiraoka LR, Harrington JJ, Gerhard DS, Lieber MR, Hsieh CL (1995) Sequence of human FEN-1, a structure specific endonuclease, and chromosomal localization of the gene (FEN-1) in mouse and human. Genomics 25:220–225
Ishibashi T, Kimura S, Furukawa T, Hatanaka M, Hashimoto J, Sakaguchi K (2001) Two types of replication protein A 70 kDa subunit in rice, Oryza sativa: molecular cloning, characterization, and cellular and tissue distribution. Gene 272:335–343
Ishibashi T, Kimura S, Yamamoto T, Furukawa T, Takata K, Uchiyama Y, Hashimoto J, Sakaguchi K (2003) Rice UV-damaged DNA binding protein homologues are most abundant in proliferating tissues. Gene 308:79–87
Ishibashi T, Koga A, Yamamoto T, Uchiyama Y, Mori Y, Hashimoto J, Kimura S, Sakaguchi K (2005) Two types of replication protein A in seed plants characterization of their functions in vitro and in vivo. FEBS J 272:3270–3281
Ishibashi T, Kimura S, Sakaguchi K (2006) A higher plant has three different types of RPA heterotrimeric complex. J Biochem 139:99–104
Ishikawa G, Kanai Y, Takata K, Takeuchi R, Shimanouchi K, Ruike T, Furukawa T, Kimura S, Sakaguchi K (2004) DmGEN, a novel RAD2 family endo-exonuclease from Drosophila melanogaster. Nucleic Acids Res 32:6251–6259
Itoh J, Nonomura K, Ikeda K, Yamaki S, Inukai Y, Yamagishi H, Kitano H, Nagato Y (2005) Rice plant development: from zygote to spikelet. Plant Cell Physiol 46:23–47
Kaufer NF, Fried HM, Schwindinger WF, Jasin M, Warner JR (1983) Cycloheximide resistance in yeast: the gene and its protein. Nucleic Acids Res 11:3123–3135
Kimura S, Kai M, Kobayashi H, Suzuki A, Morioka H, Otsuka E, Sakaguchi K (1997) A structure-specific endonuclease from cauliflower (Brassica oleracea var. botrytis) inflorescence. Nucleic Acids Res 25:4970–4976
Kimura S, Ueda T, Hatanaka M, Takenouchi M, Hashimoto J, Sakaguchi K (2000) Plant homologue of flap endonclease-1: molecular cloning, characterization, and evidence for expression in meristematic tissues. Plant Mol Biol 42:415–427
Kimura S, Furukawa T, Kasai N, Mori Y, Kitamoto KH, Sugawara F, Hashimoto J, Sakaguchi K (2003) Functional characterization of two flap endonuclease-1 homologues in rice. Gene 314:63–71
Kimura S, Tahira Y, Oshibashi T, Mori Y, Mori T, Hashimoto J, Sakaguchi K (2004) DNA repair in higher plants; photoactivation is the major DNA repair pathway in non-proliferating cells while excision repair (nucleotide excision repair and base excision repair) is active in proliferating cells. Nucleic Acids Res 32:2760–2767
Koga A, Ishibashi T, Kimura S, Uchiyama Y, Sakaguchi K (2006) Characterization of T-DNA insertion mutants and RNAi silenced plants of Arabidopsis thaliana UV-damaged DNA binding protein 2 (AtUV-DDB2). Plant Mol Biol 61:227–240
Landry LG, Stapleton AE, Jim J, Hoffman P, Hays JB, Walbot V, Last RL (1997) An Arabidopsis photolyase mutant is hypersensitive to ultraviolet-B radiation. Proc Natl Acad Sci USA 94:328–332
Lee B-I, Wilson DM III (1999) The RAD2 domain of human exonuclease 1 exhibits 5′ to 3′ exonuclease and flap structure-specific endonuclease activities. J Biol Chem 274:37763–37769
Lee B-I, Shannon M, Stubbs L, Wilson DM III (1999) Expression specificity of the mouse exonuclease 1 (mExo1) gene. Nucleic Acids Res 27:4114–4120
Lee B-I, Nguyen LH, Barsky D, Fernandes M, Wilson DM III (2002) Molecular interactions of human Exo1 with DNA. Nucleic Acids Res 30:942–949
Lewis LK, Westmoreland JW, Resnick MA (1999) Repair of endonuclease-induced double-strand breaks in Saccharomyces cerevisiae: essential role for genes associated with nonhomologous end-joining. Genetics 152:1513–1529
Lieber MR (1997) The FEN-1 family of structure-specific nuclease in eukaryotic DNA replication, recombination and repair. Bioessays 19:233–240
Liu Z, Hossain GS, Islas-Osuna MA, Mitchell DL, Mount DW (2000) Repair of UV damage in plants by nucleotide excision repair; Arabidopsis UVH1 DNA repair gene is a homolog of Saccharomyces cerevisiae Rad1. Plant J 21:519–528
Liu Z, Hall JD, Mount DW (2001) Arabidopsis UVH3 gene is a homologue of the Saccharomyces cerevisiae RAD2 and human XPG DNA repair genes. Plant J 26:329–338
Moritoh S, Miki D, Akiyama M, Kawahara M, Izawa T, Maki H, Shimamoto K (2005) RNAi-mediated silencing of OsGEN-L (OsGEN-like), a new member of the RAD2/XPG nuclease family, cause male sterility by defect of microspore development in rice. Plant Cell Physiol 46:699–715
Murray JM, Tavassoli M, Al-Harithy R, Sheldrick KS, Lehmann AR, Carr AM, Watts FZ (1994) Structural and functional conservation of the human homolog of the Schizosaccharomyces pombe rad2 gene, which is required for chromosome segregation and recovery from DNA damage. Mol Cell Biol 14:4878–4888
Nielsen FC, Jager AC, Lutzen A, Bundgaard JR, Rasmussen LJ (2004) Characterization of human exonuclease 1 in complex with mismatch repair proteins, subcellular localization and association with PCNA. Oncogene 23:1467–1468
O’Donovan A, Davies AA, Moggs JG, West SC, Wood RD (1994a) XPG endonuclease makes the 3′ incision in human DNA nucleotide excision repair. Nature 371:432–435
O’Donovan A, Scherly D, Clarkson SG, Wood RD (1994b) Isolation of active recombinant XPG protein, a human DNA repair endonuclease. J Biol Chem 269:15965–15968
Qui J, Qian Y, Guan MX, Bailis AM, Shen B (1998) Saccharomyces cerevisiae exonuclease-1 plays a role in UV resistance that is distinct from nucleotide excision repair. Nucleic Acids Res 26:3077–3088
Qui J, Qian Y, Chen V, Guan MX, Shen B (1999) Human exonuclease 1 functionally complements its yeast homologous in DNA recombination, RNA primer removal, and mutation avoidance. J Biol Chem 274:17893–17900
Reagan MS, Pittenger C, Siede W, Friedberg EC (1995) Characterization of a mutant strain of Saccharomyces cerevisiae with a deletion of the RAD27 gene, a structural homolog of the RAD2 nucleotide excision repair gene. J Bacteriol 177:364–371
Sato Y, Hong S-K, Tagiri A, Kitano H, Yamamoto N, Nagato Y, Matsuoka M (1996) A rice homeobox gene, OSH1, is expressed before again before organ differentiation in a specific region during early embryogenesis. Proc Natl Acad Sci USA 93:8117–8122
Schmutte C, Sadoff MM, Shim KS, Acharya S, Fishel R (2001) The interaction of DNA mismatch repair proteins with human exonuclease I. J Biol Chem 276:33011–33018
Schwede T, Kopp J, Guex N, Peitsch MC (2003) SWISS-MODEL: an automated protein homology-modeling server. Nucleic Acids Res 31:3381–3385
Sekelsky JJ, Hollis KJ, Eimerl AI, Burtis KC, Hawley RS (2000) Nucleotide excision repair endonuclease genes in Drosophila melanogaster. Mutat Res 459:219–228
Sharma S, Sommers JA, Driscoll HC, Uzdilla L, Wilson TM, Brosh RM Jr (2003) The exonucleolytic and endonucleolytic cleavage activities of human exonuclease 1 are stimulated by an interaction with the carboxyl-terminal region of the werner syndrome protein. J Biol Chem 278:23487–23496
Stapleton AE, Walvot V (1994) Flavonoids protect maize DNA from the induction of ultraviolet radiation damage. Plant Physiol 105:881–889
Stapleton AE, Thornber CS, Walbot V (1997) UV-B component of sunlight causes measurable damage in field grown maize (Zea mays L.): developmental and cellular heterogeneity of damage and repair. Plant Cell Environ 20:279–290
Szankasi P, Smith GR (1992) A DNA exonuclease induced during meiosis of Schizosaccharomyces pombe. J Biol Chem 267:3014–3023
Tishkoff DX, Boerger AL, Bertrand P, Filosi N, Gaida GM, Kane MF, Kolodner RD (1997) Identification and characterization of Saccharomyces cerevisiae EXO1, a gene encoding an exonuclease that interacts with MSH2. Proc Natl Acad Sci USA 94:7487–7492
Tomita K, Matsuura A, Caspari T, Carr AM, Akamatsu Y, Iwasaki H, Mizuno K, Ohta K, Uritani M, Ushimaru T, Yoshinaga K, Ueno M (2003) Competition between the Rad50 complex and the Ku heterodimer reveals a role for Exo1 in processing double-strand breaks but not telomeres. Mol Cell Biol 23:5186–5197
Tsubouchi H, Ogawa H (2000) Exo1 roles for repair of DNA double-strand breaks and meiotic crossing over in Saccharomyces cerevisiae. Mol Biol Cell 11:2221–2233
Uchiyama Y, Hatanaka M, Kimura S, Ishibashi T, Ueda T, Sakakibara Y, Matsumoto T, Furukawa T, Hashimoto J, Sakaguchi K (2002) Characterization of DNA polymerase δ from a higher plant, rice (Oryza sativa L.). Gene 295:19–26
Uchiyama Y, Kimura S, Yamamoto T, Ishibashi T, Sakaguchi K (2004) Plant DNA polymerase λ, a DNA repair enzyme that functions in plant meristematic and meiotic tissues. Eur J Biochem 271:2799–2807
Vogel EW, Nivard MJM (2001) Phenotypes of Drosophila homologs of human XPF and XPG to chemically-induces DNA modifications. Mutat Res 476:149–165
Wei K, Clark AB, Wong E, Kane MF, Mazur DJ, Parris T, Kolas NK, Russell R, Hou H Jr, Kneitz B, Yang G, Kunkel TA, Kolodner RD, Cohen PE, Edelmann W (2003) Inactivation of exonuclease 1 in mice results in DNA mismatch repair defects, increased cancer susceptibility, and male and female sterility. Genes Dev 17:603–614
Wilson DM III, Carney JP, Coleman MA, Adamson AW, Christensen M, Lamerdin JE (1998) Hex1: a new human Rad2 nuclease family member with homology to yeast exonuclease 1. Nucleic Acids Res 26:3762–3768
Zubko MK, Guillard S, Lydall D (2004) Exo1 and Rad24 differentially regulate generation of ssDNA at telomeres of Saccharomyces cerevisiae cdc13-1 mutants. Genetics 168:103–115
Acknowledgements
This work was supported in part by Sasakawa Grants for Science Fellows (SGSF), Grants-in Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan (Grants Nos. 15570042, 17310115 and 17657020 to HS). We thank Dr. N. Kasai for generating 3D models of protein structures. We also thank Dr. A. Britt and Mr. N. Heufner for useful discussion and critical reading of the manuscript.
Author information
Authors and Affiliations
Corresponding author
Additional information
Each nucleotide sequence data reported appears in the EMBL, GenBank and DDBJ Nucleotide Sequence Databases under the Accession No. AB179767 for OsEXO1.
Electronic supplementary material
Below is the link to the electronic supplementary material.
11103_2008_9288_MOESM1_ESM.tif
Supplementary Fig. 1 A modeled 3D structure for OsEXO1 protein. (Left) X-ray structure of HEX1 protein (amino acids 15–313). This structure was used as a template for modeling of OsEXO1. (Right) Modeled 3D structure for OsEXO1 protein (amino acids 17–258). Arrowheads indicate conserved aspartic acids in XPG domains. (TIF 45332 kb)
Rights and permissions
About this article
Cite this article
Furukawa, T., Imamura, T., Kitamoto, H.K. et al. Rice exonuclease-1 homologue, OsEXO1, that interacts with DNA polymerase λ and RPA subunit proteins, is involved in cell proliferation. Plant Mol Biol 66, 519–531 (2008). https://doi.org/10.1007/s11103-008-9288-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11103-008-9288-6