Abstract:
:It has been shown by analysis with monoclonal and polyclonal antibodies that outer surface protein C (OspC) of Borrelia burgdorferi sensu lato is highly heterogeneous. To determine if the heterogeneity has a genetic basis, the genes of 18 different B. burgdorferi sensu lato strains have been amplified by PCR, cloned, and sequenced. The ospC genes could be amplified from all strains tested, even from two strains which did not express OspC in detectable amounts. Among the 18 strains, 16 significantly different types of ospC sequences have been found. The sequence identities of the deduced amino acid sequences of different ospC genotypes range between 62 and 80% (determined without the leader peptide). The sequences range between 62 and 80% (determined without the leader peptide). The sequences correspond to one of the 13 OspC types distinguishable by analysis with monoclonal antibodies (B. Wilske, S. Jauris-Heipke, R. Lobentanzer, I. Pradel, V. Preac-Mursic, D. Roessler, E. Soutschek, and R. C. Johnson, J. Clin. Microbiol. 33:103-109, 1995) or represent additional types. Two completely new types were found, and OspC type 8 (which was found in Borrelia afzelii and Borrelia garinii) could be divided into two groups with different sequences but the same antibody pattern. Thus, strains belonging to different species or OspA serotypes were always significantly different in their ospC sequences. This was also confirmed by ospA sequence analysis. Interestingly, some strains of the same OspA serotype or genotype were very heterogeneous with respect to OspC, while others had nearly identical OspC proteins. Such groups of strains were found among B. burgdorferi sensu stricto, B. afzelii, and B. garinii strains. Cluster analysis of 5'-terminal and 3'-terminal stretches of ospC suggested recent intragenic recombination events in the ospC gene at least one B. afzelii strain. In addition, other recombination events between ancestors of strains belonging to the same or different species were evidenced by this type of analysis.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Jauris-Heipke S,Liegl G,Preac-Mursic V,Rössler D,Schwab E,Soutschek E,Will G,Wilske Bdoi
10.1128/JCM.33.7.1860-1866.1995subject
Has Abstractpub_date
1995-07-01 00:00:00pages
1860-6issue
7eissn
0095-1137issn
1098-660Xjournal_volume
33pub_type
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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
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journal_title:Journal of clinical microbiology
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doi:10.1128/JCM.31.7.1896-1898.1993
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doi:10.1128/JCM.11.5.465-469.1980
更新日期:1980-05-01 00:00:00
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journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.7.1849-1853.1996
更新日期:1996-07-01 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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doi:10.1128/JCM.30.5.1189-1193.1992
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