Kin is a nuclear protein that forms intranuclear foci during proliferation and is redistributed in the nucleoplasm during the cell cycle. Short-wave ultraviolet light provokes the relocalization of the protein, suggesting its participation in the cellular response to DNA damage. Originally selected based on protein-binding with RecA antibodies, the mouse protein presents a limited similarity with a functional domain of the bacterial RecA protein, a characteristic shared by the human ortholog.Synonyms: BTCD, Binding to curved DNA, DNA/RNA-binding protein KIN17, KIN, KIN, KIN17, antigenic determinant of recA protein homolog