analyses of crystals suggested that they consist of hexagonal lattices with the a axis ( a side of the lozenge as a unit cell on the basal plane ) of 0.462 nm for all these three kinds of lpss and the c axes ( perpendicular to the basal plane ) of 5.85 , 8.47 , and 8.75 nm for s. minnesota re and ra lpss and e. coli k-12 lps , respectively , and that hydrocarbon chains of the lipid a portion play the leading part in crystallization , whereas the hydrophilic part of the lipid a ( the disaccharide backbone ) and r core exhibit a disordered structure or are in a random orientation .
C0023810
lps
C0023767
lipid a