>sp|C4KHT0|SPEH_SACI6 S-adenosylmethionine decarboxylase proenzyme OS=Saccharolobus islandicus GN=speH MGVELAFPKVVGKQVYGSLYDCDENVLKDTKRLEQIIKEAADVGNMNILDIKSWKIGEGV SVVAIILESHITIHTWPEYKFATVDVYSCGPHTSPLKAFNYIVEKLGAKKYTINEADRSS EF