The molecule is a mannopentaose comprised of a chain of three alpha-D-mannose residues linked (1->2) and (1->3), with a further two-D-mannose-residue (1->2)-linked unit linked (1->6) to the mannose residue at the reducing end. It has a role as an epitope.
(2R,3S,4S,5S,6R)-2-[(2S,3S,4S,5S,6R)-2-[[(2R,3R,4S,5S,6S)-4-[(2R,3S,4S,5S,6R)-4,5-dihydroxy-6-(hydroxymethyl)-3-[(2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]oxy-3,5,6-trihydroxyoxan-2-yl]methoxy]-4,5-dihydroxy-6-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol