| Structural highlights
Function
[POLH_YEAST] DNA polymerase specifically involved in DNA repair. Plays an important role in translesion synthesis, where the normal high fidelity DNA polymerases cannot proceed and DNA synthesis stalls. Plays an important role in the repair of UV-induced pyrimidine dimers. Depending on the context, it inserts the correct base, but causes frequent base transitions and transversions. Efficiently incorporates nucleotides opposite to other UV or oxidative DNA damages like O(6)-methylguanine, 7,8-dihydro-8-oxoguanine, 2,6-diamino-4-hydroxy-5-formamidopyrimidine of 2'-deoxyguanosine (FaPydG), or p-benzoquinone DNA adducts.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34]
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
DNA polymerase eta (Pol eta) is a eukaryotic lesion bypass polymerase that helps organisms to survive exposure to ultraviolet (UV) radiation, and tumor cells to gain resistance against cisplatin-based chemotherapy. It allows cells to replicate across cross-link lesions such as 1,2-d(GpG) cisplatin adducts (Pt-GG) and UV-induced cis-syn thymine dimers. We present structural and biochemical analysis of how Pol eta copies Pt-GG-containing DNA. The damaged DNA is bound in an open DNA binding rim. Nucleotidyl transfer requires the DNA to rotate into an active conformation, driven by hydrogen bonding of the templating base to the dNTP. For the 3'dG of the Pt-GG, this step is accomplished by a Watson-Crick base pair to dCTP and is biochemically efficient and accurate. In contrast, bypass of the 5'dG of the Pt-GG is less efficient and promiscuous for dCTP and dATP as a result of the presence of the rigid Pt cross-link. Our analysis reveals the set of structural features that enable Pol eta to replicate across strongly distorting DNA lesions.
Bypass of DNA lesions generated during anticancer treatment with cisplatin by DNA polymerase eta.,Alt A, Lammens K, Chiocchini C, Lammens A, Pieck JC, Kuch D, Hopfner KP, Carell T Science. 2007 Nov 9;318(5852):967-70. PMID:17991862[35]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
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- ↑ Haracska L, Prakash S, Prakash L. Replication past O(6)-methylguanine by yeast and human DNA polymerase eta. Mol Cell Biol. 2000 Nov;20(21):8001-7. PMID:11027270
- ↑ Haracska L, Yu SL, Johnson RE, Prakash L, Prakash S. Efficient and accurate replication in the presence of 7,8-dihydro-8-oxoguanine by DNA polymerase eta. Nat Genet. 2000 Aug;25(4):458-61. PMID:10932195 doi:http://dx.doi.org/10.1038/78169
- ↑ Washington MT, Johnson RE, Prakash S, Prakash L. Accuracy of thymine-thymine dimer bypass by Saccharomyces cerevisiae DNA polymerase eta. Proc Natl Acad Sci U S A. 2000 Mar 28;97(7):3094-9. PMID:10725365 doi:http://dx.doi.org/10.1073/pnas.050491997
- ↑ Minko IG, Washington MT, Prakash L, Prakash S, Lloyd RS. Translesion DNA synthesis by yeast DNA polymerase eta on templates containing N2-guanine adducts of 1,3-butadiene metabolites. J Biol Chem. 2001 Jan 26;276(4):2517-22. Epub 2000 Nov 2. PMID:11062246 doi:http://dx.doi.org/10.1074/jbc.M007867200
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- ↑ Yu SL, Johnson RE, Prakash S, Prakash L. Requirement of DNA polymerase eta for error-free bypass of UV-induced CC and TC photoproducts. Mol Cell Biol. 2001 Jan;21(1):185-8. PMID:11113193 doi:http://dx.doi.org/10.1128/MCB.21.1.185-188.2001
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- ↑ Washington MT, Johnson RE, Prakash S, Prakash L. Mismatch extension ability of yeast and human DNA polymerase eta. J Biol Chem. 2001 Jan 19;276(3):2263-6. Epub 2000 Oct 27. PMID:11054429 doi:http://dx.doi.org/10.1074/jbc.M009049200
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- ↑ Zhang H, Siede W. UV-induced T-->C transition at a TT photoproduct site is dependent on Saccharomyces cerevisiae polymerase eta in vivo. Nucleic Acids Res. 2002 Mar 1;30(5):1262-7. PMID:11861920
- ↑ Sun L, Zhang K, Zhou L, Hohler P, Kool ET, Yuan F, Wang Z, Taylor JS. Yeast pol eta holds a cis-syn thymine dimer loosely in the active site during elongation opposite the 3'-T of the dimer, but tightly opposite the 5'-T. Biochemistry. 2003 Aug 12;42(31):9431-7. PMID:12899630 doi:http://dx.doi.org/10.1021/bi0345687
- ↑ Johnson RE, Trincao J, Aggarwal AK, Prakash S, Prakash L. Deoxynucleotide triphosphate binding mode conserved in Y family DNA polymerases. Mol Cell Biol. 2003 Apr;23(8):3008-12. PMID:12665597
- ↑ Kozmin SG, Pavlov YI, Kunkel TA, Sage E. Roles of Saccharomyces cerevisiae DNA polymerases Poleta and Polzeta in response to irradiation by simulated sunlight. Nucleic Acids Res. 2003 Aug 1;31(15):4541-52. PMID:12888515
- ↑ Washington MT, Wolfle WT, Spratt TE, Prakash L, Prakash S. Yeast DNA polymerase eta makes functional contacts with the DNA minor groove only at the incoming nucleoside triphosphate. Proc Natl Acad Sci U S A. 2003 Apr 29;100(9):5113-8. Epub 2003 Apr 11. PMID:12692307 doi:http://dx.doi.org/10.1073/pnas.0837578100
- ↑ Washington MT, Prakash L, Prakash S. Mechanism of nucleotide incorporation opposite a thymine-thymine dimer by yeast DNA polymerase eta. Proc Natl Acad Sci U S A. 2003 Oct 14;100(21):12093-8. Epub 2003 Oct 3. PMID:14527996 doi:http://dx.doi.org/10.1073/pnas.2134223100
- ↑ Gu C, Wang Y. LC-MS/MS identification and yeast polymerase eta bypass of a novel gamma-irradiation-induced intrastrand cross-link lesion G[8-5]C. Biochemistry. 2004 Jun 1;43(21):6745-50. PMID:15157108 doi:http://dx.doi.org/10.1021/bi0497749
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- ↑ Zhao B, Xie Z, Shen H, Wang Z. Role of DNA polymerase eta in the bypass of abasic sites in yeast cells. Nucleic Acids Res. 2004 Jul 29;32(13):3984-94. Print 2004. PMID:15284331 doi:http://dx.doi.org/10.1093/nar/gkh710
- ↑ McCulloch SD, Kokoska RJ, Chilkova O, Welch CM, Johansson E, Burgers PM, Kunkel TA. Enzymatic switching for efficient and accurate translesion DNA replication. Nucleic Acids Res. 2004 Aug 27;32(15):4665-75. Print 2004. PMID:15333698 doi:http://dx.doi.org/10.1093/nar/gkh777
- ↑ Niimi A, Limsirichaikul S, Yoshida S, Iwai S, Masutani C, Hanaoka F, Kool ET, Nishiyama Y, Suzuki M. Palm mutants in DNA polymerases alpha and eta alter DNA replication fidelity and translesion activity. Mol Cell Biol. 2004 Apr;24(7):2734-46. PMID:15024063
- ↑ Hwang H, Taylor JS. Evidence for Watson-Crick and not Hoogsteen or wobble base pairing in the selection of nucleotides for insertion opposite pyrimidines and a thymine dimer by yeast DNA pol eta. Biochemistry. 2005 Mar 29;44(12):4850-60. PMID:15779911 doi:http://dx.doi.org/10.1021/bi048244+
- ↑ Xie Z, Zhang Y, Guliaev AB, Shen H, Hang B, Singer B, Wang Z. The p-benzoquinone DNA adducts derived from benzene are highly mutagenic. DNA Repair (Amst). 2005 Dec 8;4(12):1399-409. Epub 2005 Sep 21. PMID:16181813 doi:http://dx.doi.org/S1568-7864(05)00215-6
- ↑ Gibbs PE, McDonald J, Woodgate R, Lawrence CW. The relative roles in vivo of Saccharomyces cerevisiae Pol eta, Pol zeta, Rev1 protein and Pol32 in the bypass and mutation induction of an abasic site, T-T (6-4) photoadduct and T-T cis-syn cyclobutane dimer. Genetics. 2005 Feb;169(2):575-82. Epub 2004 Nov 1. PMID:15520252 doi:http://dx.doi.org/genetics.104.034611
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- ↑ Carlson KD, Washington MT. Mechanism of efficient and accurate nucleotide incorporation opposite 7,8-dihydro-8-oxoguanine by Saccharomyces cerevisiae DNA polymerase eta. Mol Cell Biol. 2005 Mar;25(6):2169-76. PMID:15743815 doi:http://dx.doi.org/25/6/2169
- ↑ Vu B, Cannistraro VJ, Sun L, Taylor JS. DNA synthesis past a 5-methylC-containing cis-syn-cyclobutane pyrimidine dimer by yeast pol eta is highly nonmutagenic. Biochemistry. 2006 Aug 1;45(30):9327-35. PMID:16866379 doi:http://dx.doi.org/10.1021/bi0602009
- ↑ Abdulovic AL, Jinks-Robertson S. The in vivo characterization of translesion synthesis across UV-induced lesions in Saccharomyces cerevisiae: insights into Pol zeta- and Pol eta-dependent frameshift mutagenesis. Genetics. 2006 Mar;172(3):1487-98. Epub 2005 Dec 30. PMID:16387871 doi:http://dx.doi.org/genetics.105.052480
- ↑ Zhao B, Wang J, Geacintov NE, Wang Z. Poleta, Polzeta and Rev1 together are required for G to T transversion mutations induced by the (+)- and (-)-trans-anti-BPDE-N2-dG DNA adducts in yeast cells. Nucleic Acids Res. 2006 Jan 13;34(2):417-25. Print 2006. PMID:16415180 doi:http://dx.doi.org/34/2/417
- ↑ Alt A, Lammens K, Chiocchini C, Lammens A, Pieck JC, Kuch D, Hopfner KP, Carell T. Bypass of DNA lesions generated during anticancer treatment with cisplatin by DNA polymerase eta. Science. 2007 Nov 9;318(5852):967-70. PMID:17991862 doi:318/5852/967
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