Effect of Chemical Modification of Histidine and Tyrosine Residues in Toxic Shock Syndrome Toxin 1 on the Serologic and Mitogenic Activities of the Toxin

Overview

Journal Infect Immun

Publisher American Society for Microbiology

Specialty Allergy & Immunology

Date 1989 Jul 1

PMID 2499540

Citations 4

Authors

M S Bergdoll

Affiliations

Soon will be listed here.

Abstract

Modification of three or four of the five histidine residues in the toxic shock syndrome toxin 1 (TSST-1) with diethylpyrocarbonate did not inhibit the precipitin reaction of the modified TSST-1 with polyvalent antisera to the toxin. Monoclonal antibody 7T did not react with the modified TSST-1, but monoclonal antibody 8T did react with the toxin. Up to 50% of the mitogenic reaction of TSST-1 was inhibited by the histidine modification. Modification of one or two of the nine tyrosine residues in TSST-1 did not inhibit the precipitin reaction with polyclonal antisera to the toxin but did inhibit 85% of the mitogenic reaction.

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