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Atlas of Genetics and Cytogenetics in Oncology and Haematology OPEN ACCESS JOURNAL AT INIST-CNRS Gene Section Mini Review POLH (polymerase (DNA direct), eta) Anne Stary, Alain Sarasin Laboratory of Genetic Instability and Cancer, UPR2169 CNRS, Institut de Recherches sur le Cancer, 7, rue guy Moquet, BP 8, 94801 Villejuif, France (AS, AS) Published in Atlas Database: February 2001 Online updated version : http://AtlasGeneticsOncology.org/Genes/XPVID303.html DOI: 10.4267/2042/37726 This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 2.0 France Licence. © 2001 Atlas of Genetics and Cytogenetics in Oncology and Haematology Identity Mutations Other names: XP-V; RAD30A HGNC (Hugo): POLH Location: 6p21.1 Note: See also the deep insight on: Nucleotide Excision Repair. Germinal DNA/RNA Disease Predisposition to skin cancer. 12 mutated sites involved in the XP variant syndrome. Implicated in Xeroderma pigmentosum, XP group V Description References 11 exons. Of the 11 splice donor/acceptor sites, 10 contained consensus GT/AG dinucleotides; only the splice donor site in exon 11 (sequence CT) varied from the consensus pattern. The POLH gene lacked a TATA sequence in the region upstream of the transcription-initiation site and the upstream region was GC rich (76% in the sequence between +1 and Ð270). The first ATG codon for initiation of translation was included in the second exon. Exon 11 contained the termination codon followed by 661 bp of 3’untranslated sequence. Lehmann AR, Kirk-Bell S, Arlett CF, Paterson MC, Lohman PH, de Weerd-Kastelein EA, Bootsma D. Xeroderma pigmentosum cells with normal levels of excision repair have a defect in DNA synthesis after UV-irradiation. Proc Natl Acad Sci U S A. 1975 Jan;72(1):219-23 D'Ambrosio SM, Setlow RB. Defective and enhanced postreplication repair in classical and variant xeroderma pigmentosum cells treated with N-acetoxy-2acetylaminofluorene. Cancer Res. 1978 Apr;38(4):1147-53 Lehmann AR. The relationship between pyrimidine dimers and replicating DNA in UV-irradiated human fibroblasts. Nucleic Acids Res. 1979 Dec 11;7(7):1901-12 Minka DF, Nath J. Cytological evidence for DNA chain elongation after UV irradiation in the S phase. Biochem Genet. 1981 Apr;19(3-4):199-210 Protein Function Cordeiro-Stone M, Boyer JC, Smith BA, Kaufmann WK. Xeroderma pigmentosum variant and normal fibroblasts show the same response to the inhibition of DNA replication by benzo[a]pyrene-diol-epoxide-I. Carcinogenesis. 1986 Oct;7(10):1783-6 The POLH gene encodes DNA polymerase h, which catalyzes the translesion synthesis past a cis-syn T-T pyrimidine dimer, one of the major DNA photoproducts induced by UV light. McCormick JJ, Kateley-Kohler S, Watanabe M, Maher VM. Abnormal sensitivity of human fibroblasts from xeroderma pigmentosum variants to transformation to anchorage independence by ultraviolet radiation. Cancer Res. 1986 Feb;46(2):489-92 Description 713 amino acids. Homology Boyer JC, Kaufmann WK, Brylawski BP, Cordeiro-Stone M. Defective postreplication repair in xeroderma pigmentosum variant fibroblasts. Cancer Res. 1990 May 1;50(9):2593-8 mXPV: 80.3% amino acids identity and 86.9% similarity. Atlas Genet Cytogenet Oncol Haematol. 2001; 5(2) 98 POLH (polymerase (DNA direct), eta) Stary A, Sarasin A Griffiths TD, Ling SY. Effect of UV light on DNA chain growth and replicon initiation in xeroderma pigmentosum variant cells. Mutagenesis. 1991 Jul;6(4):247-51 Masutani C, Araki M, Yamada A, Kusumoto R, Nogimori T, Maekawa T, Iwai S, Hanaoka F. Xeroderma pigmentosum variant (XP-V) correcting protein from HeLa cells has a thymine dimer bypass DNA polymerase activity. EMBO J. 1999 Jun 15;18(12):3491-501 Wang YC, Maher VM, McCormick JJ. Xeroderma pigmentosum variant cells are less likely than normal cells to incorporate dAMP opposite photoproducts during replication of UV-irradiated plasmids. Proc Natl Acad Sci U S A. 1991 Sep 1;88(17):7810-4 Masutani C, Kusumoto R, Yamada A, Dohmae N, Yokoi M, Yuasa M, Araki M, Iwai S, Takio K, Hanaoka F. The XPV (xeroderma pigmentosum variant) gene encodes human DNA polymerase. Nature. 1999 Jun 17;399(6737):700-4 Misra RR, Vos JM. Defective replication of psoralen adducts detected at the gene-specific level in xeroderma pigmentosum variant cells. Mol Cell Biol. 1993 Feb;13(2):1002-12 McGregor WG, Wei D, Maher VM, McCormick JJ. Abnormal, error-prone bypass of photoproducts by xeroderma pigmentosum variant cell extracts results in extreme strand bias for the kinds of mutations induced by UV light. Mol Cell Biol. 1999 Jan;19(1):147-54 Wang YC, Maher VM, Mitchell DL, McCormick JJ. Evidence from mutation spectra that the UV hypermutability of xeroderma pigmentosum variant cells reflects abnormal, errorprone replication on a template containing photoproducts. Mol Cell Biol. 1993 Jul;13(7):4276-83 Goodman MF, Tippin B. Sloppier copier DNA polymerases involved in genome repair. Curr Opin Genet Dev. 2000 Apr;10(2):162-8 Waters HL, Seetharam S, Seidman MM, Kraemer KH. Ultraviolet hypermutability of a shuttle vector propagated in xeroderma pigmentosum variant cells. J Invest Dermatol. 1993 Nov;101(5):744-8 Haracska L, Yu SL, Johnson RE, Prakash L, Prakash S. Efficient and accurate replication in the presence of 7,8dihydro-8-oxoguanine by DNA polymerase eta. Nat Genet. 2000 Aug;25(4):458-61 Fujikawa K, Ayaki H, Ishizaki K, Takatera H, Matsuo S, Iizuka H, Koizumi H, Ikenaga M. Assignment of six patients with xeroderma pigmentosum in Hokkaido area to a variant form. J Radiat Res (Tokyo). 1994 Sep;35(3):168-78 Johnson RE, Washington MT, Prakash S, Prakash L. Fidelity of human DNA polymerase eta. J Biol Chem. 2000 Mar 17;275(11):7447-50 King SA, Wilson SJ, Farber RA, Kaufmann WK, CordeiroStone M. Xeroderma pigmentosum variant: generation and characterization of fibroblastic cell lines transformed with SV40 large T antigen. Exp Cell Res. 1995 Mar;217(1):100-8 Limoli CL, Giedzinski E, Morgan WF, Cleaver JE. Polymerase eta deficiency in the xeroderma pigmentosum variant uncovers an overlap between the S phase checkpoint and double-strand break repair. Proc Natl Acad Sci U S A. 2000 Jul 5;97(14):7939-46 Mitchell DL, Cleaver JE, Lowery MP, Hewitt RR. Induction and repair of (6-4) photoproducts in normal human and xeroderma pigmentosum variant cells during the cell cycle. Mutat Res. 1995 Nov;337(3):161-7 Masutani C, Kusumoto R, Iwai S, Hanaoka F. Mechanisms of accurate translesion synthesis by human DNA polymerase eta. EMBO J. 2000 Jun 15;19(12):3100-9 Tung BS, McGregor WG, Wang YC, Maher VM, McCormick JJ. Comparison of the rate of excision of major UV photoproducts in the strands of the human HPRT gene of normal and xeroderma pigmentosum variant cells. Mutat Res. 1996 Jan 2;362(1):65-74 Matsuda T, Bebenek K, Masutani C, Hanaoka F, Kunkel TA. Low fidelity DNA synthesis by human DNA polymerase-eta. Nature. 2000 Apr 27;404(6781):1011-3 Yamada A, Masutani C, Iwai S, Hanaoka F. Complementation of defective translesion synthesis and UV light sensitivity in xeroderma pigmentosum variant cells by human and mouse DNA polymerase eta. Nucleic Acids Res. 2000 Jul 1;28(13):2473-80 Ensch-Simon I, Burgers PM, Taylor JS. Bypass of a sitespecific cis-Syn thymine dimer in an SV40 vector during in vitro replication by HeLa and XPV cell-free extracts. Biochemistry. 1998 Jun 2;37(22):8218-26 Yuasa M, Masutani C, Eki T, Hanaoka F. Genomic structure, chromosomal localization and identification of mutations in the xeroderma pigmentosum variant (XPV) gene. Oncogene. 2000 Sep 28;19(41):4721-8 Svoboda DL, Briley LP, Vos JM. Defective bypass replication of a leading strand cyclobutane thymine dimer in xeroderma pigmentosum variant cell extracts. Cancer Res. 1998 Jun 1;58(11):2445-8 Zhang Y, Yuan F, Wu X, Rechkoblit O, Taylor JS, Geacintov NE, Wang Z. Error-prone lesion bypass by human DNA polymerase eta. Nucleic Acids Res. 2000 Dec 1;28(23):471724 Cleaver JE, Afzal V, Feeney L, McDowell M, Sadinski W, Volpe JP, Busch DB, Coleman DM, Ziffer DW, Yu Y, Nagasawa H, Little JB. Increased ultraviolet sensitivity and chromosomal instability related to P53 function in the xeroderma pigmentosum variant. Cancer Res. 1999 Mar 1;59(5):1102-8 Bebenek K, Matsuda T, Masutani C ,et al. Proofreading of DNA polymerase eta-dependent replication errors. J Biol Chem. 2001 Jan 26;276(4):2317-20 Cordonnier AM, Fuchs RP. Replication of damaged DNA: molecular defect in xeroderma pigmentosum variant cells. Mutat Res. 1999 Oct 22;435(2):111-9 Haracska L, Washington MT, Prakash S, Prakash L. Inefficient bypass of an abasic site by DNA polymerase eta. J Biol Chem. 2001 Mar 2;276(9):6861-6 Cordonnier AM, Lehmann AR, Fuchs RP. Impaired translesion synthesis in xeroderma pigmentosum variant extracts. Mol Cell Biol. 1999 Mar;19(3):2206-11 This article should be referenced as such: Stary A, Sarasin A. POLH (polymerase (DNA direct), eta). Atlas Genet Cytogenet Oncol Haematol. 2001; 5(2):98-99. Johnson RE, Kondratick CM, Prakash S, Prakash L. hRAD30 mutations in the variant form of xeroderma pigmentosum. Science. 1999 Jul 9;285(5425):263-5 Atlas Genet Cytogenet Oncol Haematol. 2001; 5(2) 99