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Cited by 161

The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

Characterization of Reaction Intermediates of Human Excision Repair Nuclease

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Mu, David, Wakasugi, Mitsuo, Hsu, David S., Sancar, Aziz·1997·Journal of Biological Chemistry

Abstract

Nucleotide excision repair in humans is a complex reaction involving 14 polypeptides in six repair factors for dual incisions on either sides of a DNA lesion. To identify the reaction intermediates that form by the human excision repair nuclease, we adopted three approaches: purification of functional DNA.protein complexes, permanganate footprinting, and the employment as substrate of presumptive DNA reaction intermediates containing unwound sequences 5' to, 3' to, or encompassing the DNA lesion. The first detectable reaction intermediate was formed by substrate binding of XPA, RPA, XPC.HHR23B plus TFIIH (preincision complex 1, PIC1). In this complex the DNA was unwound on either side of the lesion by no more than 10 bases. Independent of the XPG nuclease function, the XPG protein stabilized this complex, forming a long lived preincision complex 2 (PIC2). The XPF.ERCC1 complex bound to PIC2, forming PIC3, which led to dual incisions and the release of the excised oligomer. With partially unwound DNAs, thymine cyclobutane dimer was excised at a fast rate independent of XPC.HHR23B, indicating that a major function of this protein is to stabilize the unwound DNA or to aid lesion unwinding in preincision complexes.

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Metadata

Authors
Mu, D., Wakasugi, M., Hsu, D. S., & Sancar, A.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1997-11
Volume
272
Issue
46
Pages
28971-28979
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1996172944
Cited by
161
References
7
FWCI
3.83
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Characterization of Reaction Intermediates of Human Excision Repair Nuclease. https://app.cochat.ai/papers/10.1074/jbc.272.46.28971
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Mu, D., Wakasugi, M., Hsu, D. S., & Sancar, A. (1997). Characterization of Reaction Intermediates of Human Excision Repair Nuclease. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.272.46.28971

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