a 1,2-diacyl-sn-glycero-3-phospho-L-serine + H(+) <=> a 1,2-diacyl-sn-glycero-3-phosphoethanolamine + CO2
a 1,2-diacyl-sn-glycero-3-phospho-l-serine + h(+) <=> a 1,2-diacyl-sn-glycero-3-phosphoethanolamine + co2