Cellulose Iα and cellulose Iβ have the same fibre repeat distance (1.043 nm for the repeat dimer interior to the crystal, 1.029 nm on the surface [721]) but differing displacements of the sheets relative to one another. The neighboring sheets of cellulose Iα (consisting of identical chains with two alternating glucose conformers -A-B-) are regularly displaced from each other in the same direction whereas sheets of cellulose Iβ (consisting of two conformationally distinct alternating sheets, (as shown right where the 2-OH and 6-OH groups both change orientations so altering the hydrogen bonding pattern) each made up of crystallographically identical glucose conformers) are staggered [559]. It has been found that cellulose (Iβ) significantly alters the water structuring at its surface out to about 10 Å, which may affect its enzymatic digestion