Involved in the assembly of an N-linked disaccharide that decorates the S-layer glycoprotein and flagellins (PubMed:18978056). AglC catalyzes the transfer of 2,3-diacetamido-2,3-dideoxy-alpha-D-glucuronic acid (Glc-2,3-diNAcA) from uridine 5'-diphospho 2,3-diacetamido-2,3-dideoxy-alpha-D-glucuronic acid (UDP-Glc-2,3-diNAcA) to the AglK product Dol-P-GlcNAc to yield Dol-P-GlcNAc-Glc-2,3-diNAcA (PubMed:23624439). AglC is specific for the monophosphate-linked Dol-P-GlcNAc (PubMed:23624439). an archaeal dolichyl N-acetyl-alpha-D-glucosaminyl phosphate + UDP-2,3-diacetamido-2,3-dideoxy-alpha-D-glucuronate = an archaeal dolichyl 3-O-(2,3-diacetamido-2,3-dideoxy- beta-D-glucuronosyl)-N-acetyl- alpha-D-glucosaminyl phosphate + H(+) + UDP Cell surface structure biogenesis; S-layer biogenesis. Protein modification; protein glycosylation. Cells lacking this gene result in flagellins and S-layer proteins with significantly reduced apparent molecular masses, loss of flagellar assembly and absence of glycan attachment. Belongs to the glycosyltransferase 2 family.