>sp|A1RSJ7|RTCA_PYRIL RNA 3'-terminal phosphate cyclase OS=Pyrobaculum islandicum GN=rtcA MIVKIDGSYGEGGGQILRTSIALSALLGKPVEIINIRAKRTNPGLQPQHLTGVSAAALLT DADIEGAAKGSTRLYFKPKTLKCGTFNIDIGTAGSISLVIQTLAPILLYAPCPTKLVITG GTDVAWAPPIDYMRYVFVKVLSLFGAKIAIELVRRGHYPRGGGRVIVYVEPIKKLRAVHY VEFGRLVKISGISHAVNLPTHVAERQAKAAKETLAKLGYVAEVEVETRSDGLGPGSGIVL WAESDIGNVVGGDALGERGKPAEEVGREAAERLAAVLKTGVSLDPHMADMAVVYMALAEG RSKMSTSEATLHLQTNMYIVEQFLPVKFKLEKTGARYIIEVDGIGYSR