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Structure paper

TitleLesion recognition by XPC, TFIIH and XPA in DNA excision repair.
Journal, issue, pagesNature, Vol. 617, Issue 7959, Page 170-175, Year 2023
Publish dateApr 19, 2023
AuthorsJinseok Kim / Chia-Lung Li / Xuemin Chen / Yanxiang Cui / Filip M Golebiowski / Huaibin Wang / Fumio Hanaoka / Kaoru Sugasawa / Wei Yang /
PubMed AbstractNucleotide excision repair removes DNA lesions caused by ultraviolet light, cisplatin-like compounds and bulky adducts. After initial recognition by XPC in global genome repair or a stalled RNA ...Nucleotide excision repair removes DNA lesions caused by ultraviolet light, cisplatin-like compounds and bulky adducts. After initial recognition by XPC in global genome repair or a stalled RNA polymerase in transcription-coupled repair, damaged DNA is transferred to the seven-subunit TFIIH core complex (Core7) for verification and dual incisions by the XPF and XPG nucleases. Structures capturing lesion recognition by the yeast XPC homologue Rad4 and TFIIH in transcription initiation or DNA repair have been separately reported. How two different lesion recognition pathways converge and how the XPB and XPD helicases of Core7 move the DNA lesion for verification are unclear. Here we report on structures revealing DNA lesion recognition by human XPC and DNA lesion hand-off from XPC to Core7 and XPA. XPA, which binds between XPB and XPD, kinks the DNA duplex and shifts XPC and the DNA lesion by nearly a helical turn relative to Core7. The DNA lesion is thus positioned outside of Core7, as would occur with RNA polymerase. XPB and XPD, which track the lesion-containing strand but translocate DNA in opposite directions, push and pull the lesion-containing strand into XPD for verification.
External linksNature / PubMed:37076618 / PubMed Central
MethodsEM (single particle)
Resolution3.3 - 7.1 Å
Structure data

EMDB-27996, PDB-8ebs:
Initial DNA-lesion (Cy5) binding by XPC and TFIIH
Method: EM (single particle) / Resolution: 4.0 Å

EMDB-27997, PDB-8ebt:
XPA repositioning Core7 of TFIIH relative to XPC-DNA lesion (Cy5)
Method: EM (single particle) / Resolution: 3.9 Å

EMDB-27998, PDB-8ebu:
XPC release from Core7-XPA-DNA (Cy5)
Method: EM (single particle) / Resolution: 3.3 Å

EMDB-27999, PDB-8ebv:
Initial DNA-lesion (AP) binding by XPC and TFIIH complex 1
Method: EM (single particle) / Resolution: 7.1 Å

EMDB-28000, PDB-8ebw:
Initial DNA-lesion (AP) binding by XPC and TFIIH complex2
Method: EM (single particle) / Resolution: 5.6 Å

EMDB-28001, PDB-8ebx:
XPA repositioning Core7 of TFIIH relative to XPC-DNA lesion (AP)
Method: EM (single particle) / Resolution: 3.6 Å

EMDB-28002, PDB-8eby:
XPC release from Core7-XPA-DNA (AP)
Method: EM (single particle) / Resolution: 3.6 Å

EMDB-29673: Bulky DNA lesion recognition complex 3
Method: EM (single particle) / Resolution: 3.4 Å

EMDB-29674: Initial DNA-lesion (Cy5) binding by XPC and TFIIH focused
Method: EM (single particle) / Resolution: 4.2 Å

Chemicals

ChemComp-SF4:
IRON/SULFUR CLUSTER / Iron–sulfur cluster

ChemComp-ZN:
Unknown entry

ChemComp-CA:
Unknown entry

Source
  • homo sapiens (human)
  • synthetic construct (others)
KeywordsDNA BINDING PROTEIN/DNA / Protein-DNA complex / DNA BINDING PROTEIN-DNA complex

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