Nuclear envelope protein involved in DSB repair during late mitosis; forms nuclear envelope patches associated with Rad52p-containing DNA repair foci, and accelerates homologous recombination downstream of DNA end resection; mutant is defective in directing meiotic recombination events to homologous chromatids; upregulated after DNA damage in late mitosis; null mutant is hypersensitive to DSBs; non-tagged protein is detected in highly purified mitochondria and is phosphorylated