prototoxin

prototoxin

An obsolete term for a postulated toxin of bacterial origin that is particularly lethal and has a high affinity for a corresponding antitoxin.
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References in periodicals archive ?
perfringens types B and D as a relatively inactive prototoxin with a molecular weight of 32,700 (Worthington and Mulders, 1977).
The activation of the prototoxin seems to produce several isoforms with a range of specific activities between that of the prototoxin and the mature toxin (Worthington and Mulders, 1977).
Production and purification of epsilon prototoxin produced by Clostridium perfringens type D.