>tr|A0A0E3JXN9|A0A0E3JXN9_SACSO Arginine decarboxylase proenzyme OS=Saccharolobus solfataricus GN=speD MSEREVLQKINSPEGKEDRIIGKHVFGNLYDIDAERLNDKEFLEKLVLEAVDIAHMKLVE IKAWSFGGKKGGVSVIALVEESHIALHTWNEYNYATLDVYTCGEDSDPQSAFAHIVNALN PKRYQMFYADRSSQ