POLYNUCLEOTIDES WHICH ARE OF NATURE B2/D+ A- AND WHICH ARE ISOLATED FROM , AND BIOLOGICAL USES OF THESE POLYNUCLEOTIDES AND OF THEIR POLYPEPTIDES.

摘要

The present invention relates to products which are of nature B2+ A-, isolated from E. coli, and to their biological applications, in particular their medical (therapeutic, vaccine and diagnostic) and biotechnological applications. In the present application, the expression "of nature B2+ A-( is intended to mean presence at a frequency greater than 10 % among the E. coli strains of group B2 of the ECOR collection, and at a frequency of less than 10 % among the strains of group A of the same collection. A phylogenic determination method which makes it possible to rapidly and easily distinguish the groups A, B1, B2 and D of the E. coli species with more than 99 % precision is in particular described.