>tr|A0A841HBB8|A0A841HBB8_HALSI IMP cyclohydrolase OS=Halobacterium salinarum GN=purO MYIGRFVVVGPSVAAYRVSSRSFPNRKLIERPAGLTVVPTADAEETTNPYVSYNCVRTAG GHAVVGNGSHVDPITEKVERGYPPRDALTEALLAMDYEKDDYDTPRIAGVLAPDGTAYVG IVRADAVLVRAVEEPTLVATYEKDAPEAIGFDAATAADAAREAYSAAFEHAVCAAGVSRR GVGDGYDTAVVNDP