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. 1988 Apr;56(4):773–778. doi: 10.1128/iai.56.4.773-778.1988

Purification and characterization of H.8 antigen from group B Neisseria meningitidis.

A K Bhattacharjee 1, E E Moran 1, J S Ray 1, W D Zollinger 1
PMCID: PMC259369  PMID: 2450067

Abstract

The surface antigen (H.8) common to the pathogenic Neisseria species was purified by a simple procedure by use of high-performance liquid chromatography. The purified H.8 antigen was characterized as to its amino acid composition, susceptibilities to several proteolytic enzymes, isoelectric point, and susceptibilities to an acid and a base. The amino acid composition of purified H.8 antigen from two strains of Neisseria meningitidis group B, namely, 44/76 and 8047, were compared. It was found that glutamic acid, alanine, and proline accounted for about 80% of the total amino acids in each case. A preliminary analysis of the lipid content of this protein was made. It showed the presence of a lipid component that moves between C9 and C11 straight-chain fatty acids in the gas chromatograph. Limited amino acid sequence data were obtained by sequencing a fragment of the H.8 antigen that was isolated after partial acid hydrolysis. The H.8 antigen epitope was found to be labile to treatment with both a mild acid and a mild base.

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Selected References

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