dipyrrolylmethanemethyl-L-cysteine residue
dipyrrolylmethanemethyl-l-cysteine residue
An alpha-amino-acid residue that is an <small>L</small>-cysteine residue in which the hydrogen attached to the sulfur is substituted by a [4-(2-carboxyethyl)-5-{[4-(2-carboxyethyl)-3-(carboxymethyl)-1<em>H</em>-pyrrol-2-yl]methyl}-3-(carboxymethyl)-1<em>H</em>-pyrrol-2-yl]methyl group.