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Title: Kinetic gating mechanism of DNA damage recognition by Rad4/XPC

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms6849· OSTI ID:1225230
 [1];  [1];  [2];  [1];  [1];  [3];  [4];  [4];  [2];  [1];  [1]
  1. Univ. of Illinois at Chicago, Chicago, IL (United States)
  2. The Univ. of Chicago, Chicago, IL (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Univ. of Pittsburgh, Pittsburgh, PA (United States)

The xeroderma pigmentosum C (XPC) complex initiates nucleotide excision repair by recognizing DNA lesions before recruiting downstream factors. How XPC detects structurally diverse lesions embedded within normal DNA is unknown. Here we present a crystal structure that captures the yeast XPC orthologue (Rad4) on a single register of undamaged DNA. The structure shows that a disulphide-tethered Rad4 flips out normal nucleotides and adopts a conformation similar to that seen with damaged DNA. Contrary to many DNA repair enzymes that can directly reject non-target sites as structural misfits, our results suggest that Rad4/XPC uses a kinetic gating mechanism whereby lesion selectivity arises from the kinetic competition between DNA opening and the residence time of Rad4/XPC per site. This mechanism is further supported by measurements of Rad4-induced lesion-opening times using temperature-jump perturbation spectroscopy. Lastly, kinetic gating may be a general mechanism used by site-specific DNA-binding proteins to minimize time-consuming interrogations of non-target sites.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1225230
Alternate ID(s):
OSTI ID: 1253601
Journal Information:
Nature Communications, Vol. 6; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 162 works
Citation information provided by
Web of Science

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Cited By (14)

Xeroderma pigmentosum group C sensor: unprecedented recognition strategy and tight spatiotemporal regulation journal October 2015
Resistance to Nucleotide Excision Repair of Bulky Guanine Adducts Opposite Abasic Sites in DNA Duplexes and Relationships between Structure and Function journal September 2015
Single-molecule visualization reveals the damage search mechanism for the human NER protein XPC-RAD23B journal August 2019
The mTORC1-4E-BP-eIF4E axis controls de novo Bcl6 protein synthesis in T cells and systemic autoimmunity journal August 2017
Mechanism and regulation of DNA damage recognition in nucleotide excision repair journal January 2019
BmNPV infection correlates with the enhancement of the resistance of Bombyx mori cells to UV radiation journal July 2019
Twist-open mechanism of DNA damage recognition by the Rad4/XPC nucleotide excision repair complex journal March 2016
Xeroderma pigmentosum group C sensor: unprecedented recognition strategy and tight spatiotemporal regulation text January 2016
Recognition of Damaged DNA for Nucleotide Excision Repair: A Correlated Motion Mechanism with a Mismatched cis-syn Thymine Dimer Lesion journal August 2015
Sequence specificity, energetics and mechanism of mismatch recognition by DNA damage sensing protein Rad4/XPC journal February 2020
Two-step interrogation then recognition of DNA binding site by Integration Host Factor: an architectural DNA-bending protein journal December 2017
Enhanced spontaneous DNA twisting/bending fluctuations unveiled by fluorescence lifetime distributions promote mismatch recognition by the Rad4 nucleotide excision repair complex journal December 2017
Structure and mechanism of pyrimidine–pyrimidone (6-4) photoproduct recognition by the Rad4/XPC nucleotide excision repair complex journal May 2019
Dissociation Dynamics of XPC-RAD23B from Damaged DNA Is a Determining Factor of NER Efficiency journal June 2016