Abstract:
:A protein antigen with an apparent molecular weight (Mr) of 31,000 was isolated from 0.2 M glycine hydrochloride (pH 2.2) extracts of a typical human fecal isolate, Campylobacter jejuni VC74. The protein was purified to homogeneity on a preparative scale by immunoaffinity chromatography followed by molecular sieving with a Superose 12 column. Isoelectric focusing under nondenaturing conditions indicated a pI of 9.3, and amino acid composition analysis showed that the protein was unusually rich in lysine, containing 14.9 mol% of this basic amino acid. Cysteine and tryptophan were absent. The protein also contained approximately 35% hydrophobic amino acid residues, and N-terminal amino acid analysis showed that 17 of the first 38 residues were hydrophobic. This amino-terminal sequence to residue 22 was virtually identical to that of an antigenically cross-reactive 31,000-Mr protein isolated from another C. jejuni strain belonging to a different heat-labile serogroup. Western blotting (immunoblotting) of glycine extracts of other C. jejuni, Campylobacter coli, and Campylobacter laridis strains belonging to different thermolabile and thermostable serotypes, as well as Campylobacter fetus, with a rabbit polyclonal antiserum raised against the purified C. jejuni VC74 protein showed that all C. jejuni, C. coli, and C. laridis strains tested contained a 31,000-Mr protein with epitopes which were antigenically cross-reactive with the C. jejuni VC74 protein. The antigenically cross-reactive epitopes of this protein were also readily detected by immunodot blot assay of glycine extracts of C. jejuni, C. coli, and C. laridis with monospecific polyclonal antisera to the 31,000-Mr protein, suggesting that this serological test could be a useful addition to those currently employed in the rapid identification of these important pathogens. Slide agglutination reactions, immunofluorescence assay, and immunogold electron microscopy with antisera to purified 31,000-Mr protein and trypsin treatment of whole cells indicated that the cross-reactive epitopes of the 31,000-Mr protein were not exposed on the cell surface. Cell fractionation analysis and immunogold electron microscopy located the protein on the outer surface of the cytoplasmic membrane. This finding suggests that the 31,000-Mr protein is not a good candidate for inclusion in a monovalent subunit Campylobacter vaccine.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Dubreuil JD,Kostrzynska M,Logan SM,Harris LA,Austin JW,Trust TJdoi
10.1128/JCM.28.6.1321-1328.1990subject
Has Abstractpub_date
1990-06-01 00:00:00pages
1321-8issue
6eissn
0095-1137issn
1098-660Xjournal_volume
28pub_type
杂志文章abstract::We report a case of pneumonia with a fatal outcome caused by a nonhemolytic strain of Streptococcus pyogenes. This strain was isolated in pure growth from blood cultures and was fully identified biochemically. Such strains will be difficult to recognize and isolate from sites with heavy growth of normal flora. This ph...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.40.6.2311-2312.2002
更新日期:2002-06-01 00:00:00
abstract::Pregnant cows were successfully hyperimmunized with all four human rotavirus serotypes, resulting in a 100-fold increase in neutralizing milk antibody titers over those of controls. Milk antibodies were isolated batchwise from 1,000 kg of pooled milk for the first 10 lactation days, yielding 10 kg of freeze-dried milk...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.6.982-986.1987
更新日期:1987-06-01 00:00:00
abstract::The use of monoclonal antibody (MAb) p63-27, which is reactive with the major immediate-early human cytomegalovirus (HCMV) protein pp72, was explored for the rapid diagnosis of HCMV viruria. The rapid assay detected all but 1 of 19 specimens identified by standard virus isolation methods from 1,676 newborn urine speci...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.30.3.721-723.1992
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abstract::The current article summarizes recent changes in nomenclature for fungi of medical importance published in the years 2018 to 2019, including new species and revised names for existing ones. Many of the revised names have been widely adopted without further discussion. However, those that concern common pathogens of hu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章,评审
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.12.3325-3328.1993
更新日期:1993-12-01 00:00:00
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更新日期:2005-02-01 00:00:00
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.15.5.954-958.1982
更新日期:1982-05-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.26.1.57-61.1988
更新日期:1988-01-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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更新日期:1995-09-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.21.4.622-625.1985
更新日期:1985-04-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00754-15
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.44.4.1581-1583.2006
更新日期:2006-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:2013-07-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.1.2.157-160.1975
更新日期:1975-02-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01950-14
更新日期:2014-11-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.11.2947-2951.1993
更新日期:1993-11-01 00:00:00
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:
更新日期:1977-09-01 00:00:00
abstract::The specificity of Mycobacterium kansasii anti-mycoside A antiserum prepared in rabbits injected with purified samples of the phenolic glycolipid was evaluated by an enzyme-linked immunosorbent assay. Chloroform-methanol extracts from representative strains of 23 mycobacterial species and 50 strains of M. kansasii sho...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.25.12.2270-2273.1987
更新日期:1987-12-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.31.4.831-835.1993
更新日期:1993-04-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.43.8.4277-4279.2005
更新日期:2005-08-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.16.1.41-45.1982
更新日期:1982-07-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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更新日期:1976-01-01 00:00:00
abstract::Rapid detection of mycobacterial disease is essential. Using multiple specimen types and concentrations of mycobacteria, we compared two commercial auramine O stains. The more rapid stain permitted consistent acid-fast bacillus quantitation and exhibited less debris staining, and the staining procedure required less t...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
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更新日期:2009-04-01 00:00:00
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pub_type: 杂志文章
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