>sp|A4YH98|ARGDC_METS5 Arginine decarboxylase proenzyme OS=Metallosphaera sedula GN=Msed_1645 MSEQVTFQSHEDRIVGKHVFGNLYDIDPEDLNNEQLLKDLVLKAVEIAHMNLVEAKSWSF GGKKGGVSVIALIEESHIALHTWNEYNYATLDVYTCGEDSDPQAAFKFIVEALKPRRYQV FFADRSSS