Open AccessBinding of Clostridium botulinum type B toxin to rat brain synaptosome
Author(s) -
Park Moon Kook,
Jung Hyun,
Yang Kyu Hwan
Publication year - 1990
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1990.tb03896.x
Subject(s) - synaptosome , toxin , clostridium botulinum , chemistry , immunoglobulin light chain , neurotoxin , biochemistry , monoclonal antibody , antibody , biology , in vitro , immunology
Purified toxin and its subunits from Clostridium botulinum type B were labeled with 125 iodine and binding of them to rat brain synaptosomes was studied. Labeled toxin and heavy chain were shown to bind to synaptosomes and there was no significant difference in the molar quantity of bound toxin and heavy chain at several concentrations of synaptosomes, whereas labeled light chain did not bind to synaptosomes. The binding of labeled heavy chain to synaptosomes was inhibited by unlabeled toxin and heavy chain to a similar degree as that of labeled toxin. The binding of labeled toxin and heavy chain to synaptosomes were inhibited by a monoclonal antibody which is specific for the heavy chain.