GCA_000012465.1 PMN2A_0199 definition Holliday junction resolvase YqgF GCA_000012465.1 PMN2A_0268 definition Holliday junction DNA helicase subunit RuvA GCA_000012465.1 PMN2A_0699 definition Holliday junction endonuclease RuvC GCA_000012465.1 PMN2A_1192 definition Holliday junction DNA helicase B