3-oxoeicosasphinganine + CO2 + CoA => octadecanoyl-CoA + L-serine + H(+)
3-oxoeicosasphinganine + co2 + coa => octadecanoyl-coa + l-serine + h(+)
3-oxoeicosasphinganine + CO2 + CoA => octadecanoyl-CoA + L-serine + H(+)
3-oxoeicosasphinganine + co2 + coa => octadecanoyl-coa + l-serine + h(+)