>sp|Q9HRB2|RIBL_HALSA FAD synthase OS=Halobacterium salinarum GN=ribL MTRVVAQGTFDLIHPGHVHYLEDAAAMGDELHVILARRENVTHKDPPVLPNRQRRDVVAA LDPVDHARIGHPEDIFAPIEAIDPDVIALGFDQHHDAAAIEAELADRGLDCAVERASPRE ARYDDEVLSSGDIADRVLAQRGDSDP