The invention relates to the construction of recombinant, immunodominant polypeptides against spotted fever group Rickettsia. The invention also relates to a method for the use of the recombinant proteins, either singly or in combination, in detection and diagnostic assays of spotted fever. The proteins can also be used to induce immune response against spotted fever group Rickettsia.

Ching; Wei-Mei

The United States of America as represented by the Secretary of the Navy

Recombinant antigens for diagnosis and prevention of spotted fever rickettsiae

All or part of the DNA sequence of the gene which encodes the S-layer protein of R. prowazekii as illustrated in Sequence ID No. 1 as well as a truncated identical piece of this gene in R. typhi as well as the 5' and 3' noncoding regions can be used for vaccination against typhus and spotted fever rickettsial infection or to diagnose the diseases caused by these bacteria. The invention is also accomplished by the deduced amino acid sequence of the S-layer protein of R. prowazekii derived from the DNA sequence of the encoding gene. Further, the invention includes the peptide or protein products based on all or parts of this gene.

spotted/fiebre

Recombinant antigens for diagnosis and prevention of spotted fever rickettsiae

Gene and protein applicable to the preparation of vaccines for rickettsia prowazekii and rickettsia typhi and the detection of both

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