DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Two interaction surfaces between XPA and RPA organize the preincision complex in nucleotide excision repair

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
ORCiD logo [1];  [2];  [3];  [3]; ORCiD logo [2];  [3];  [3]; ORCiD logo [4];  [5];  [2]; ORCiD logo [4];  [2]; ORCiD logo [3]; ORCiD logo [6]
  1. Inst. for Basic Science (Korea, Republic of); Ulsan National Institute of Science and Technology (UNIST), Ulsan (Korea, Republic of)
  2. Inst. for Basic Science (Korea, Republic of)
  3. Vanderbilt Univ., Nashville, TN (United States)
  4. Univ. of Texas, Houston, TX (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  6. Inst. for Basic Science (Korea, Republic of); Ulsan National Institute of Science and Technology (UNIST), Ulsan (Korea, Republic of); Vanderbilt Univ., Nashville, TN (United States)

The xeroderma pigmentosum protein A (XPA) and replication protein A (RPA) proteins fulfill essential roles in the assembly of the preincision complex in the nucleotide excision repair (NER) pathway. We have previously characterized the two interaction sites, one between the XPA N-terminal (XPA-N) disordered domain and the RPA32 C-terminal domain (RPA32C), and the other with the XPA DNA binding domain (DBD) and the RPA70AB DBDs. Here, we show that XPA mutations that inhibit the physical interaction in either site reduce NER activity in biochemical and cellular systems. Combining mutations in the two sites leads to an additive inhibition of NER, implying that they fulfill distinct roles. Our data suggest a model in which the interaction between XPA-N and RPA32C is important for the initial association of XPA with NER complexes, while the interaction between XPA DBD and RPA70AB is needed for structural organization of the complex to license the dual incision reaction. Integrative structural models of complexes of XPA and RPA bound to single-stranded/double-stranded DNA (ss/dsDNA) junction substrates that mimic the NER bubble reveal key features of the architecture of XPA and RPA in the preincision complex. Most critical among these is that the shape of the NER bubble is far from colinear as depicted in current models, but rather the two strands of unwound DNA must assume a U-shape with the two ss/dsDNA junctions localized in close proximity. Our data suggest that the interaction between XPA and RPA70 is key for the organization of the NER preincision complex.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Korean Institute for Basic Science; National Cancer Institute (NCI); National Institutes of Health (NIH); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1969342
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 34 Vol. 119; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

References (50)

Functions of human replication protein A (RPA): From DNA replication to DNA damage and stress responses journal January 2006
High-Throughput SAXS for the Characterization of Biomolecules in Solution: A Practical Approach book October 2013
Structural Basis for the Recognition of DNA Repair Proteins UNG2, XPA, and RAD52 by Replication Factor RPA journal October 2000
Xeroderma Pigmentosum Group C Protein Complex Is the Initiator of Global Genome Nucleotide Excision Repair journal August 1998
Sequential Assembly of the Nucleotide Excision Repair Factors In Vivo journal July 2001
UV-Induced Ubiquitylation of XPC Protein Mediated by UV-DDB-Ubiquitin Ligase Complex journal May 2005
Regulation of endonuclease activity in human nucleotide excision repair journal July 2011
XPA: A key scaffold for human nucleotide excision repair journal August 2016
Envisioning how the prototypic molecular machine TFIIH functions in transcription initiation and DNA repair journal December 2020
Tripartite DNA Lesion Recognition and Verification by XPC, TFIIH, and XPA in Nucleotide Excision Repair journal September 2015
Characteristics and concepts of dynamic hub proteins in DNA processing machinery from studies of RPA journal March 2015
Specific and Efficient Binding of Xeroderma Pigmentosum Complementation Group A to Double-Strand/Single-Strand DNA Junctions with 3‘- and/or 5‘-ssDNA Branches journal December 2006
Structural Analysis of Replication Protein A Recruitment of the DNA Damage Response Protein SMARCAL1 journal April 2014
Molecular Mechanisms of Mammalian Global Genome Nucleotide Excision Repair journal February 2006
Redefining the DNA-Binding Domain of Human XPA journal July 2014
NMR Analysis of the Architecture and Functional Remodeling of a Modular Multidomain Protein, RPA journal May 2009
Solution structure of the DNA- and RPA-binding domain of the human repair factor XPA journal August 1998
Defective Repair Replication of DNA in Xeroderma Pigmentosum journal May 1968
Coordination of dual incision and repair synthesis in human nucleotide excision repair journal March 2009
Robust, high-throughput solution structural analyses by small angle X-ray scattering (SAXS) journal July 2009
Structural basis of TFIIH activation for nucleotide excision repair journal June 2019
Cryo-EM structures of the XPF-ERCC1 endonuclease reveal how DNA-junction engagement disrupts an auto-inhibited conformation journal February 2020
Transcription preinitiation complex structure and dynamics provide insight into genetic diseases journal May 2019
Structural basis for the recruitment of ERCC1-XPF to nucleotide excision repair complexes by XPA journal October 2007
Sequential recruitment of the repair factors during NER: the role of XPG in initiating the resynthesis step journal December 2007
Human XPG nuclease structure, assembly, and activities with insights for neurodegeneration and cancer from pathogenic mutations journal June 2020
Assembly, subunit composition, and footprint of human DNA repair excision nuclease journal June 1998
DNA Repair Protein XPA Binds Replication Protein A (RPA) journal February 1995
The XPA-binding domain of ERCC1 Is Required for Nucleotide Excision Repair but Not Other DNA Repair Pathways journal February 2010
Nucleotide Excision Repair by Mutant Xeroderma Pigmentosum Group A (XPA) Proteins with Deficiency in Interaction with RPA journal December 2010
Analysis of DNA binding by human factor xeroderma pigmentosum complementation group A (XPA) provides insight into its interactions with nucleotide excision repair substrates journal August 2017
Structural Determinants for Substrate Binding and Catalysis by the Structure-specific Endonuclease XPG journal March 2003
Structural Mechanisms of DNA Replication, Repair, and Recombination journal April 2004
Mechanism of open complex and dual incision formation by human nucleotide excision repair factors journal November 1997
Double-check probing of DNA bending and unwinding by XPA-RPA: an architectural function in DNA repair journal July 2001
The active site of the DNA repair endonuclease XPF-ERCC1 forms a highly conserved nuclease motif journal April 2002
The comings and goings of nucleotide excision repair factors on damaged DNA journal October 2003
Sequential binding of DNA repair proteins RPA and ERCC1 to XPA in vitro journal December 1996
The crystal structure of human XPG, the xeroderma pigmentosum group G endonuclease, provides insight into nucleotide excision DNA repair journal August 2020
A new structural framework for integrating replication protein A into DNA processing machinery journal January 2013
Structural and functional characterization of interactions involving the Tfb1 subunit of TFIIH and the NER factor Rad2 journal February 2012
A key interaction with RPA orients XPA in NER complexes journal January 2020
Single-molecule visualization reveals the damage search mechanism for the human NER protein XPC-RAD23B journal August 2019
Nucleotide excision repair of DNA with recombinant human proteins: definition of the minimal set of factors, active forms of TFIIH, and modulation by CAK journal February 2000
Structure and conformational change of a replication protein A heterotrimer bound to ssDNA journal October 2012
Implementation and performance of SIBYLS: a dual endstation small-angle X-ray scattering and macromolecular crystallography beamline at the Advanced Light Source journal January 2013
An interaction between the DNA repair factor XPA and replication protein A appears essential for nucleotide excision repair. journal October 1995
Strong Functional Interactions of TFIIH with XPC and XPG in Human DNA Nucleotide Excision Repair, without a Preassembled Repairosome journal April 2001
Xeroderma Pigmentosum Group A Protein Loads as a Separate Factor onto DNA Lesions journal August 2003
Solution Structure of the DNA- and RPA-binding Domain of the Human Repair Factor XPA dataset January 1999