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skos:definition |
GO: Any of the protein complexes formed by the UvrABC excinuclease system, which carries out nucleotide excision repair. Three different complexes are formed by the 3 proteins as they proceed through the excision repair process. First a complex consisting of two A subunits and one B subunit bind DNA and unwind it around the damaged site. Then, the A subunits disassociate leaving behind a stable complex between subunit B and DNA. Now, subunit C binds to this B+DNA complex and causes subunit B to nick the DNA on one side of the complex while subunit C nicks the DNA on the other side of the complex. DNA polymerase I and DNA ligase can then repair the resulting gap. [GOC:mah, GOC:mlg, PMID:15192705]
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