Activation of the classical and properdin pathways of complement by bacterial lipopolysaccharides (LPS)
Morrison, D.C.; Kline, L.F.
Journal of Immunology 118(1): 362-368
1977
ISSN/ISBN: 0022-1767 PMID: 318670 Document Number: 112775
LPS lipid A region of the LPS is responsible for classical pathway activation and the polysaccharide region responsible for properdin pathway activation. Classical pathway activation by lipid A does not depend upon antibody to the lipid A and properdin pathway activation proceeds by a lipid A-independent mechanism. The polysaccharide portion of the LPS molecule exerts a modifying influence on the potential anticomplementary activity of the lipid A.