>sp|O59366|KTHY_PYRHO Probable thymidylate kinase OS=Pyrococcus horikoshii GN=tmk MRGYFIVLEGIDGSGKTTQAKLLAEWFEDKGYEVLLTKEPTDSELGKLIRRIILEESVID GSKISYEAEALLFAADRAEHVKKIILPALSEGKVVICDRYFYSSLAYQWARGLDLNWLIQ VNSFAPRPDLAILLDLPVKESLRRIKLRGTLTEFDKIVELQRKVRHNYLKLAEMFPEMRI VNALSSIEDIHSDIVALVKHELLGL