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Structural and functional relationships of the XPF/MUS81 family of proteins

Ciccia, A. and McDonald, Neil Q. and West, S.C. (2008) Structural and functional relationships of the XPF/MUS81 family of proteins. Annual Review of Biochemistry 77 , pp. 259-287. ISSN 0066-4154.

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Abstract

Proteins belonging to the XPF/MUS81 family play important roles in the repair of DNA lesions caused by UV-light or DNA cross-linking agents. Most eukaryotes have four family members that assemble into two distinct heterodimeric complexes, XPF-ERCC1 and MUS81-EME1. Each complex contains one catalytic and one noncatalytic subunit and exhibits endonuclease activity with a variety of 3′-flap or fork DNA structures. The catalytic subunits share a characteristic core containing an excision repair cross complementation group 4 (ERCC4) nuclease domain and a tandem helix-hairpin-helix (HhH)2 domain. Diverged domains are present in the noncatalytic subunits and may be required for substrate targeting. Vertebrates possess two additional family members, FANCM and Fanconi anemia-associated protein 24 kDa (FAAP24), which possess inactive nuclease domains. Instead, FANCM contains a functional Superfamily 2 (SF2) helicase domain that is required for DNA translocation. Determining how these enzymes recognize specific DNA substrates and promote key repair reactions is an important challenge for the future.

Metadata

Item Type: Article
School: Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences
Research Centres and Institutes: Structural Molecular Biology, Institute of (ISMB)
Depositing User: Administrator
Date Deposited: 04 Aug 2010 14:09
Last Modified: 02 Aug 2023 16:49
URI: https://eprints.bbk.ac.uk/id/eprint/1030

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