Lichenan

Structure


Monomer sequence:


Two types:

Type I: (→3)-ß-D-glucose(1→) and (→4)-ß-D-glucose(1→). Linear, 1,3 and 1,4 bond ratio: 1:2 [2].

Type II: (→3)-ß-D-glucose(1→) (major) and (→6)-ß-D-glucose(1→) (minor). Branched, variable proportions. Some yeasts have highly regular structures others are of uncertain destribution [1].


3D architecture:


Preferred substitution at position 6. Derivatives with branching at position 6 usually adopts a single helix formation at neutral pH [3].