N-terminal N-acetyl-L-glutamyl-L-glutamyl-L-glutamyl(3-) residue
n-terminal n-acetyl-l-glutamyl-l-glutamyl-l-glutamyl(3-) residue
N-terminal <em>N</em>-acetyl-<small>L</small>-Glu-<small>L</small>-Glu-<small>L</small>-Glu residue; major microspecies at pH 7.3