succinyl-CoA + L-serine => O-succinyl-L-serine + CoA
succinyl-coa + l-serine => o-succinyl-l-serine + coa
succinyl-CoA + L-serine => O-succinyl-L-serine + CoA
succinyl-coa + l-serine => o-succinyl-l-serine + coa