Abstract
During each yeast cell cycle, ∼100,000 nicks are generated during lagging-strand DNA replication. Efficient nick processing during Okazaki fragment maturation requires the coordinated action of DNA polymerase δ (Pol δ) and the FLAP endonuclease FEN1. Misregulation of this process leads to the accumulation of double-stranded breaks and cell lethality. Our studies highlight a remarkably efficient mechanism for Okazaki fragment maturation in which Pol δ by default displaces 2–3 nt of any downstream RNA or DNA it encounters. In the presence of FEN1, efficient nick translation ensues, whereby a mixture of mono- and small oligonucleotides are released. If FEN1 is absent or not optimally functional, the ability of Pol δ to back up via its 3′–5′-exonuclease activity, a process called idling, maintains the polymerase at a position that is ideal either for ligation (in case of a DNA–DNA nick) or for subsequent engagement by FEN1 (in case of a DNA–RNA nick). Consistent with the hypothesis that DNA polymerase ϵ is the leading-strand enzyme, we observed no idling by this enzyme and no cooperation with FEN1 for creating a ligatable nick.
References
40
Referenced
174
10.1074/jbc.M209801200
10.1002/j.1460-2075.1985.tb03778.x
/ EMBO J. (1985)10.1038/35086609
10.1074/jbc.M111026200
10.1073/pnas.91.19.9047
10.1128/MCB.17.4.2136
/ Mol. Cell. Biol. (1997)10.1016/S0021-9258(18)54625-1
/ J. Biol. Chem. (1991)10.1074/jbc.273.31.19756
10.1016/S0021-9258(18)68447-9
/ J. Biol. Chem. (1988)10.1074/jbc.274.39.27481
10.1093/nar/28.18.3649
10.1074/jbc.M211818200
10.1016/S0092-8674(01)00367-1
10.1111/j.1356-9597.2004.00716.x
10.1038/ng0697-116
10.1002/j.1460-2075.1994.tb06373.x
/ EMBO J. (1994)10.1016/S0021-9258(19)78100-9
/ J. Biol. Chem. (1994)10.1073/pnas.091095198
10.1074/jbc.M209803200
-
Jin Y.H ., Garg, P., Stith, C.M., Al Refai, H., Sterling, J., Weston, L., Kunkel, T., Resnick, M.A., Burgers, P.M., and Gordenin, D.A. 2004. The multiple biological roles for the 3′–5′-exonuclease of DNA polymerase δ require switching between the polymerase and exonuclease domains. Mol. Cell. Biol. (in press).
(
10.1128/MCB.25.1.461-471.2005
) 10.1146/annurev.bi.62.070193.003345
10.1073/pnas.90.22.10881
10.1080/10409230390259382
10.1074/jbc.M313216200
10.1006/jmbi.2000.3744
10.1073/pnas.251193198
10.1074/jbc.270.51.30377
10.1074/jbc.271.42.25888
10.1016/S0021-9258(19)44602-4
/ J. Biol. Chem. (1972)10.1128/MCB.19.12.8361
/ Mol. Cell. Biol. (1999)10.1016/0022-5193(78)90164-9
{'key': '2021111607214699000_18.22.2764.32', 'first-page': '1267', 'volume': '257', 'year': '1981', 'journal-title': 'J. Biol. Chem.'}
/ J. Biol. Chem. (1981)10.1093/genetics/142.3.717
/ Genetics (1996)10.1074/jbc.M306893200
10.1002/j.1460-2075.1992.tb05517.x
/ EMBO J. (1992)10.1098/rstb.2003.1374
10.1073/pnas.94.14.7487
10.1016/S0092-8674(00)81846-2
10.1016/S0021-9258(19)70193-8
/ J. Biol. Chem. (1980)10.1016/S1568-7864(02)00114-3
Dates
Type | When |
---|---|
Created | 20 years, 10 months ago (Nov. 2, 2004, 9:58 p.m.) |
Deposited | 3 years, 9 months ago (Nov. 16, 2021, 10:23 a.m.) |
Indexed | 11 months ago (Oct. 5, 2024, 8:32 p.m.) |
Issued | 20 years, 10 months ago (Nov. 1, 2004) |
Published | 20 years, 10 months ago (Nov. 1, 2004) |
Published Online | 20 years, 10 months ago (Nov. 1, 2004) |
Published Print | 20 years, 9 months ago (Nov. 15, 2004) |
@article{Garg_2004, title={Idling by DNA polymerase δ maintains a ligatable nick during lagging-strand DNA replication}, volume={18}, ISSN={1549-5477}, url={http://dx.doi.org/10.1101/gad.1252304}, DOI={10.1101/gad.1252304}, number={22}, journal={Genes & Development}, publisher={Cold Spring Harbor Laboratory}, author={Garg, Parie and Stith, Carrie M. and Sabouri, Nasim and Johansson, Erik and Burgers, Peter M.}, year={2004}, month=nov, pages={2764–2773} }