RNase H2-initiated ribonucleotide excision repair.
RNase H2-initiated ribonucleotide excision repair.
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DOI:
10.1016/j.molcel.2012.06.035
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发表时间:
2012-09-28
期刊:
影响因子:
16
通讯作者:
Burgers, Peter M.
中科院分区:
文献类型:
--
作者:
Sparks, Justin L.;Chon, Hyongi;Cerritelli, Susana M.;Kunkel, Thomas A.;Johansson, Erik;Crouch, Robert J.;Burgers, Peter M.
Ribonucleotides are incorporated into DNA by the replicative DNA polymerases at frequencies of about 2 per kb which makes them by far the most abundant form of potential DNA damage in the cell. Their removal is essential for restoring a stable intact chromosome. Here we present a complete biochemical reconstitution of the ribonucleotide excision repair (RER) pathway with enzymes purified from Saccharomyces cerevisiae. RER is most efficient when the ribonucleotide is incised by RNase H2, and further excised by the flap endonuclease FEN1 with strand displacement synthesis carried out by DNA polymerase δ, the PCNA clamp, its loader RFC, and completed by DNA ligase I. We observed partial redundancy for several of the enzymes in this pathway. Exo1 substitutes for FEN1 and Pol ε for Pol δ with reasonable efficiency. However, RNase H1 fails to substitute for RNase H2 in the incision step of RER.
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影响因子:
64.5
作者:
Stetson DB;Ko JS;Heidmann T;Medzhitov R
通讯作者:
Medzhitov R
影响因子:
64.5
作者:
Reijns MA;Rabe B;Rigby RE;Mill P;Astell KR;Lettice LA;Boyle S;Leitch A;Keighren M;Kilanowski F;Devenney PS;Sexton D;Grimes G;Holt IJ;Hill RE;Taylor MS;Lawson KA;Dorin JR;Jackson AP
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Jackson AP
影响因子:
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作者:
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16
作者:
Rychlik MP;Chon H;Cerritelli SM;Klimek P;Crouch RJ;Nowotny M
通讯作者:
Nowotny M
DOI:
10.1073/pnas.94.5.1619
发表时间:
1997-03-04
影响因子:
11.1
作者:
Joyce, CM
通讯作者:
Joyce, CM