>sp|Q2NHB2|RIBL_METST FAD synthase OS=Methanosphaera stadtmanae GN=ribL MASGTFDIIHPGHGFYLSESKKLGGDNAILMVVVATDKTVKNHKRVPIVGEKQRCEMVSM LKGVDEAYVGDEKDPFKIVKEKKPDIITIGPDQNFNPDSLHKSLLKKGLDIKVVKINDYK KFELDSSCKIIRKIKQTDFDMDYLENCQ