label: O(3)-(poly[beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)]-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine polyanionic residue
label_lc: o(3)-(poly[beta-d-galnac-(1->4)-beta-d-glca-(1->3)]-beta-d-galnac-(1->4)-beta-d-glca-(1->3)-beta-d-gal-(1->3)-beta-d-gal-(1->4)-beta-d-xyl)-l-serine polyanionic residue
description: "An alpha-amino-acid residue anion obtained by deprotonation of the carboxy groups of O(3)-(poly[beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)]-beta-D-GalNAc-(1->4)-beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-serine residue"