Alternative definition : KEGG: Homologous recombination (HR) is essential for the accurate repair of DNA double-strand
breaks (DSBs), potentially lethal lesions. HR takes place in the late S-G2 phase of
the cell cycle and involves the generation of a single-stranded region of DNA, followed
by strand invasion, formation of a Holliday junction, DNA synthesis using the intact
strand as a template, branch migration and resolution. It is investigated that RecA/Rad51
family proteins play a central role. The breast cancer susceptibility protein Brca2
and the RecQ helicase BLM (Bloom syndrome mutated) are tumor suppressors that maintain
genome integrity, at least in part, through HR.;