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Polar Lipid Composition in the Classification of Nocardia and Related Bacteria
TLDR
Unidentified glycolipids were detected in the lipids of a majority of the organisms investigated and phosphatidylglycerol was present in substantial amounts in extracts of two strains of Bacterionema matruchotii and in reduced proportions in strains of several other species.
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Cytidine 5'-monophospho-N-acetylneuraminic acid or a related compound is the low Mr factor from human red blood cells which induces gonococcal resistance to killing by human serum.
TLDR
N nanogram quantities of a commercial preparation of cytidine 5'-monophospho-N-acetylneuraminic acid (CMP-NANA) were shown to induce gonococci to serum resistance, and the two materials were indistinguishable in their patterns of acid and heat lability.
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Cytidine 5'-monophospho-N-acetyl neuraminic acid and a low molecular weight factor from human blood cells induce lipopolysaccharide alteration in gonococci when conferring resistance to killing by…
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Sialylation of lipopolysaccharide and loss of absorption of bactericidal antibody during conversion of gonococci to serum resistance by cytidine 5'-monophospho-N-acetyl neuraminic acid.
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Iron transport in Mycobacterium smegmatis: the location of mycobactin by electron microscopy.
TLDR
It is concluded that mycobactin may be acting either as a store of iron, or as an ionophore, or possibly fulfilling both roles.
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Lipopolysaccharide alteration is associated with induced resistance of Neisseria gonorrhoeae to killing by human serum.
TLDR
Results of neutralization tests coupled with the results of immunoblotting strongly suggest that increased serum resistance is due to the lack of the high Mr LPS moiety.
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Mycolic acids of representative strains of Nocardia and the ‘rhodochrous’ complex
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Red blood cells, a source of factors which induce Neisseria gonorrhoeae to resistance to complement-mediated killing by human serum.
TLDR
Guinea pig RBC lysates contain far more of the factors that induce resistance in gonococci to complement-mediated killing by fresh human serum that do plasma or serum, and as with serum, most of the resistance-inducing activity was found in ultrafiltrates with molecular weights of less than 5000.
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A determinant of resistance of Neisseria gonorrhoeae to killing by human phagocytes: an outer membrane lipoprotein of about 20 kDa with a high content of glutamic acid.
TLDR
There is strong evidence that the 20 kDa lipoprotein extracted from outer membranes of a strain of Neisseria gonorrhoeae, BS4 (agar), which is resistant to killing by human phagocytes, is a determinant of gonococcal resistance to phagocyte killing.
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Fractionation of guinea pig serum for an inducer of gonococcal resistance to killing by human serum: active fractions containing glucopeptides similar to those from human red blood cells.
TLDR
Guinea pig serum was more active than human serum and low molecular weight fractions from it conferred resistance to gonococci in 3 h at 37 degrees C, and analysis indicated the presence of one or more small glucopeptides containing cysteine, glutamic acid, aspartic acid, threonine, serine, glycine, alanine, valine and lysine.
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