O-[S-(L-alpha-aminoacyl)pantetheine-4'-phosphoryl]serine zwitterionic residue
o-[s-(l-alpha-aminoacyl)pantetheine-4'-phosphoryl]serine zwitterionic residue
A zwitterionic group obtained by transfer of a proton from the phosphate to the amino group of any <em>O</em>-[<em>S</em>-(<small>L</small>-α-aminoacyl)pantetheine-4'-phosphoryl]serine residue; major microspecies at pH 7.3.