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. 1979 Nov;26(2):397–401. doi: 10.1128/iai.26.2.397-401.1979

Effect of colony type and pH on surface charge and hydrophobicity of Neisseria gonorrhoeae.

K E Magnusson, E Kihlström, L Norlander, A Norqvist, J Davies, S Normark
PMCID: PMC414627  PMID: 44699

Abstract

The effect of colonial variation and growth at pH 7.2 or pH 6.0 on the surface properties of Neisseria gonorrhoeae was assessed by the use of two-phase partitioning and hydrophobic interaction chromatography. Cells grown at pH 7.2 tended to be both hydrophobic and to possess a slight negative charge. Growth at pH 6.0 appeared to decrease hydrophobicity and to increase the negative surface charge. Possession of a series of outer membrane proteins, termed the colony opacity-associated proteins, did not appear to significantly affect charge or hydrophobicity. Piliated cells tended to have a higher negative charge than nonpiliated variants. They also tended to be less hydrophobic at pH 7.2, but became more hydrophobic at pH 6.0. The implications of these findings are discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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