THIN AGGREGATIVE FIMBRIAE FROM DIARRHEAGENIC ESCHERICHIA-COLI

被引:70
作者
COLLINSON, SK
EMODY, L
TRUST, TJ
KAY, WW
机构
[1] UNIV VICTORIA,DEPT BIOCHEM & MICROBIOL,PETCH BLDG,POB 3055,VICTORIA V8W 3P6,BC,CANADA
[2] UNIV VICTORIA,CANADIAN BACTERIAL DIS NETWORK,VICTORIA V8W 3P6,BC,CANADA
[3] UNIV PECS,SCH MED,INST MICROBIOL,H-7643 PECS,HUNGARY
关键词
D O I
10.1128/JB.174.13.4490-4495.1992
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Four strains of diarrheagenic Escherichia coli originally isolated from distinct geographic regions were found to produce unusual thin aggregative fimbriae requiring depolymerization in formic acid prior to analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Immunoelectron microscopy of native fimbriae and Western blot (immunoblot) analysis of the corresponding 18-kDa fimbrins showed that these E. coli fimbriae were serologically cross-reactive with SEF 17 (Salmonella enteritidis fimbriae with a fimbrin molecular mass of 17 kDa). The E. coli and S. enteritidis fimbrins had similar total amino acid compositions and highly conserved N-terminal amino acid sequences. These results indicate that E. coli and S. enteritidis produce biochemically related, aggregative fimbriae which constitute a new type of intergenerically distributed fimbriae for which we propose the descriptive name GVVPQ fimbriae on the basis of the conserved N-terminal amino acid sequence.
引用
收藏
页码:4490 / 4495
页数:6
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