Complex sentence: In addition, human RAD52, in combination with ERCC1, promotes the error-prone homologous DNA repair pathway of single-strand annealing repair, which, though error prone, may be needed for survival of cells with DNA damage not otherwise repairable.
Split into simpler sentences: In addition, human RAD52, in combination with ERCC1, promotes the error-prone homologous DNA repair pathway of single-strand annealing. Though error prone, this repair pathway may be needed for survival of cells with DNA damage that is not otherwise repairable.