isopentadecanoyl-CoA + L-serine + H(+) => 3-dehydro-15-methylhexadecasphinganine + CO2 + CoA
isopentadecanoyl-coa + l-serine + h(+) => 3-dehydro-15-methylhexadecasphinganine + co2 + coa
isopentadecanoyl-CoA + L-serine + H(+) => 3-dehydro-15-methylhexadecasphinganine + CO2 + CoA
isopentadecanoyl-coa + l-serine + h(+) => 3-dehydro-15-methylhexadecasphinganine + co2 + coa