[4)-beta-D-GlcpA-(1->4)-alpha-D-GlcpNAc-(1->]n
[4)-beta-d-glcpa-(1->4)-alpha-d-glcpnac-(1->]n
A glycosaminoglycan composed of a backbone of repeating β-<small>D</small>-glucuronosyl-(1→4)-<em>N</em>-acetyl-α-<small>D</small>-glucosamine units joined by (1→4)-linkages. The capsular polysaccharide produced by the <em>E. coli</em> K5 strain.