The molecule is a branched amino decasaccharide consisting of a hexasaccharide chain of beta-D-galactose, N-acetyl-beta-D-glucosamine, alpha-D-mannose, beta-D-mannose, and two N-acetyl-beta-D-glucosamine residues linked sequentially (1->4), (1->2), (1->3), (1->4) and (1->4), to the beta-D-mannose residue of which is (1->6)-linked a beta-D-galactosyl-(1->4)-N-acetyl-beta-D-glucosaminyl-(1->3)-alpha-D-mannosyl trisaccharide branch and to the reducing end N-acetyl-beta-D-glucosamine residue of which is (1->6)-linked an alpha-L-fucose residue. When it is the N-glycan content of the tumour necrosis factor (TNF) alpha blocker adalimumab, the two terminal galactose residues may be either absent or alternatively the linkage to the GlcNAc residues may be (1->3), while the fucose residue may be absent. It has a role as an epitope. It is an amino decasaccharide, a glucosamine oligosaccharide and a N-glycan derivative.
N-[(2R,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-3-acetamido-5-[(2S,3S,4S,5R,6R)-4-[(2S,3S,4S,5S,6R)-3-[(2S,3R,4R,5S,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-6-[[(2S,3S,4S,5S,6R)-3-[(2S,3R,4R,5S,6R)-3-acetamido-4-hydroxy-6-(hydroxymethyl)-5-[(2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-3,5-dihydroxyoxan-2-yl]oxy-4-hydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-2,4-dihydroxy-6-[[(2R,3S,4R,5S,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxymethyl]oxan-3-yl]acetamide