title: Characterization of Haemophilus parainfluenzae strains with low-Mr or ladder-like lipopolysaccharides.
abstract: Twenty-five Haemophilus parainfluenzae strains were characterized for lipopolysaccharide (LPS) profiles, outer membrane protein profiles, serum sensitivity, plasmid profiles and DNA homology. Seventeen strains produced low-Mr LPS that did not contain O-sidechains, while the remaining eight strains contained ladder-like LPS suggestive of O-repeated units. This is the first time in the genus Haemophilus that LPS with O-repeated groups has been described. The strains producing the different types of LPS could not be distinguished from each other in outer membrane protein profiles or the other characteristics examined.
mesh_terms: D001425:Bacterial Outer Membrane Proteins / Q000032:analysis; D004269:DNA, Bacterial / Q000032:analysis; D004591:Electrophoresis, Polyacrylamide Gel; D006193:Haemophilus influenzae / Q000032:analysis / Q000145:classification*; D008070:Lipopolysaccharides / Q000032:analysis*; D008970:Molecular Weight; D009693:Nucleic Acid Hybridization
chemical_list: D001425:Bacterial Outer Membrane Proteins; D004269:DNA, Bacterial; D008070:Lipopolysaccharides