>sp|O59456|PYRG_PYRHO CTP synthase OS=Pyrococcus horikoshii GN=pyrG MTKFIFVTGGVVSGLGKGITSASIGLLMKARGYKTTNIKIDPYINYDAGTMNPYQHGEVF VLDDGGEVDLDLGNYERFLDTNLTFEHNITTGKVYSTVIEKERRGEYLGATVQVIPHITD EIKRRIREIAKDYDIVVVEIGGTVGDIESMPFLEAARQMQLEEGRENVAFVHVTYVPKLK VVGEQKTKPTQHSVKELRSLGIQPDAIVARSEDPLEEEARKKISLFTNVPREAVVSAYDV EDTYEVPLLLEREGLGKYLIKRLKLEDREPDLREWEKMVAKYKALKETVEIAIVGKYVKL TDSYLSIKEALKHASVSNDVKVKIRWIEAEDIEEHGTKLLEGVDGIIVPGGFGARGAEGK IMTIKYARENDIPFLGICFGFQLTVVEFARNVLGMKGAHSTEIDPQTPYPVVDLMPEQRN LEKLGGTMRLGAYPVKIKKGTLAYRLYKKELVYERHRHRWEVNPDYIEAFEKAGLVFSGV AGDDERRMEILELPDKRYFIATQFHPEFKSRPMRPAPVFHGLVRAAKEYKQEKNATN