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Cited by 175

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Reconstitution of Proliferating Cell Nuclear Antigen-dependent Repair of Apurinic/Apyrimidinic Sites with Purified Human Proteins

Open access
Matsumoto, Yoshihiro, Kim, Kyung, Hurwitz, Jerard, Gary, Ronald, Levin, David S., Tomkinson, Alan E., Park, Min S.·1999·Journal of Biological Chemistry

Abstract

An apurinic/apyrimidinic (AP) site is one of the most abundant lesions spontaneously generated in living cells and is also a reaction intermediate in base excision repair. In higher eukaryotes, there are two alternative pathways for base excision repair: a DNA polymerase beta-dependent pathway and a proliferating cell nuclear antigen (PCNA)-dependent pathway. Here we have reconstituted PCNA-dependent repair of AP sites with six purified human proteins: AP endonuclease, replication factor C, PCNA, flap endonuclease 1 (FEN1), DNA polymerase delta, and DNA ligase I. The length of nucleotides replaced during the repair reaction (patch size) was predominantly two nucleotides, although longer patches of up to seven nucleotides could be detected. Neither replication protein A nor Ku70/80 enhanced the repair activity in this system. Disruption of the PCNA-binding site of either FEN1 or DNA ligase I significantly reduced efficiency of AP site repair but did not affect repair patch size.

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Metadata

Authors
Matsumoto, Y., Kim, K., Hurwitz, J., Gary, R., Levin, D. S., Tomkinson, A. E., & Park, M. S.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1999-11
Volume
274
Issue
47
Pages
33703-33708
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1978124987
Cited by
175
References
3
FWCI
6.52
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Reconstitution of Proliferating Cell Nuclear Antigen-dependent Repair of Apurinic/Apyrimidinic Sites with Purified Human Proteins. https://app.cochat.ai/papers/10.1074/jbc.274.47.33703
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Matsumoto, Y., Kim, K., Hurwitz, J., Gary, R., Levin, D. S., Tomkinson, A. E., & Park, M. S. (1999). Reconstitution of Proliferating Cell Nuclear Antigen-dependent Repair of Apurinic/Apyrimidinic Sites with Purified Human Proteins. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.274.47.33703

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