Expression of Actinomyces viscosus antigens in Escherichia coli: cloning of a structural gene (fimA) for type 2 fimbriae.
AUTOR(ES)
Donkersloot, J A
RESUMO
A cosmid gene library of Actinomyces viscosus T14V was prepared in Escherichia coli to examine the expression of A. viscosus antigens and to gain insight into the structure of A. viscosus type 1 and type 2 fimbriae. Out of this library of 550 clones, 28 reacted in a colony immunoassay with antibodies against A. viscosus cells. The proteins responsible for these reactions were identified in three clones. Clones AV1209 and AV2009 displayed nonfimbrial antigens with subunits of 40 and 58 kilodaltons, respectively. Clone AV1402 showed a 59-kilodalton protein that reacted with monospecific antibody against type 2 fimbriae and that comigrated with a subunit of type 2 fimbriae during sodium dodecyl sulfate-polyacrylamide gel electrophoresis. This indicates that AV1402 expresses a gene (fimA) for a subunit of A. viscosus type 2 fimbriae.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=215885Documentos Relacionados
- Expression of Streptococcus sanguis antigens in Escherichia coli: cloning of a structural gene for adhesion fimbriae.
- Cloning and nucleotide sequence of a gene for Actinomyces naeslundii WVU45 type 2 fimbriae.
- Cloning and expression in Escherichia coli of the gene encoding the structural subunit of Bacteroides nodosus fimbriae.
- Mutants of Actinomyces viscosus T14V lacking type 1, type 2, or both types of fimbriae.
- Characterization of Shigella type 1 fimbriae: expression, FimA sequence, and phase variation.
