Protein Rib, a cell surface protein that transmits immunity to many Group B Streptococcus strains, protein purification method, reagent kit and pharmaceutical composition

摘要

This invention relates to a new protein, designated Rib, and subfragments, multiples or variants thereof, which confers protective immunity against infection with many group B streptococcal strains, in particular those of serotype III. The invention includes a procedure for purification of the protein, a procedure for preparation of highly specific antibodies, a reagent kit, a DNA sequence encoding the protein and a pharmaceutical composition comprising the protein or fragments or variants thereof.