>sp|Q4JAC4|KTHY_SULAC Probable thymidylate kinase OS=Sulfolobus acidocaldarius GN=tmk MFIISFEGIDGSGKTTISKIIYEKLLIEIGSNKKIILTSEPFSQEIIKLIEEIGWKDPIS LALLFTADRAYHLNLLFKQNPEIIIMDRYIDSTIAYQSSLGIDENWIRNLNKYFPEPDLT ILLDLKPETAIARIKNKVDKFNFDEKISTLSKVREKYLELAKRNNKIRIVNAEKSIDEIV EETWSIVYSFLNHF