[4)-alpha-D-Glcp-(1->4)-alpha-D-Glcp-(1->4)-alpha-D-Glcp-(1->] residue
[4)-alpha-d-glcp-(1->4)-alpha-d-glcp-(1->4)-alpha-d-glcp-(1->] residue
A trisaccharide residue obtained from α-maltotriose by removal of the anomeric hydroxy group from the residue at the reducing end and the hydrogen attached to the 4-hydroxy group of the residue at the non-reducing end. Corresponds to the minimal monoclonal antibody (Mab) binding epitope for the binding of Mabs to mycobacterial capsular α-glucans of <em>Mycobacterium smegmatis</em>.