| Literature DB >> 3516880 |
T E Fehniger, J D Radolf, A M Walfield, T M Cunningham, J N Miller, M A Lovett.
Abstract
A recombinant plasmid designated pAW305, containing a 6-kilobase insert of Treponema pallidum DNA, directed the expression of a 38-kilodalton (kDa) treponemal antigen in Escherichia coli. The 38-kDa antigen copurified with the outer membrane fraction of the E. coli cell envelope after treatment with nonionic detergents or sucrose density gradient centrifugation. Rabbits immunized with the recombinant 38-kDa antigen developed antibodies which reacted specifically with a 38-kDa T. pallidum antigen on immunoblots, and 38-kDa antisera specifically immobilized T. pallidum in a complement-dependent manner in the T. pallidum immobilization test. Antisera to the 38-kDa recombinant antigen were also used to demonstrate its native surface association on T. pallidum by immunoelectron microscopy.Entities:
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Year: 1986 PMID: 3516880 PMCID: PMC261041 DOI: 10.1128/iai.52.2.586-593.1986
Source DB: PubMed Journal: Infect Immun ISSN: 0019-9567 Impact factor: 3.441