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Diisopropylphosphorofluoridate and Tabun: enzymatic hydrolysis and nerve function
Science (New York, N.Y.)
|June 18, 1971
Summary
Squid nerve enzymes can break down nerve agents like Tabun, Sarin, and Soman, but slowly. This enzyme specificity suggests potential for novel nerve gas detoxification methods.
Area of Science:
- Biochemistry
- Neuroscience
- Environmental Science
Background:
- Nerve agents pose significant threats due to their toxicity and persistence.
- Organophosphate nerve agents are known inhibitors of acetylcholinesterase (AChE).
- Understanding enzyme-substrate specificity is crucial for developing countermeasures and detoxification strategies.
Purpose of the Study:
- To investigate the enzymatic hydrolysis of nerve agents by squid nerve enzymes.
- To compare the hydrolysis rates of different nerve agents (Tabun, DFP, Sarin, Soman) by squid enzymes.
- To explore the implications of squid enzyme specificity for nerve gas detoxification.
Main Methods:
- Enzymatic assays were performed using squid nerve extracts.
- Hydrolysis rates of Tabun, diisopropylphosphorofluoridate (DFP), Sarin, and Soman were measured.
- The effect of Tabun on squid giant axon action potential was assessed.
Main Results:
- Squid nerve enzymes hydrolyzed Tabun at significantly lower rates compared to DFP, Sarin, and Soman.
- Tabun demonstrated potent acetylcholinesterase inhibition but did not block squid axon action potentials.
- DFP's ability to block conduction in squid axons is likely independent of acetylcholinesterase inhibition.
Conclusions:
- Squid nerve enzymes exhibit substrate specificity towards organophosphate nerve agents.
- The differential hydrolysis rates suggest potential for targeted detoxification of specific nerve agents.
- Findings imply that squid enzymes could be relevant for developing novel strategies for nerve gas disposal and ocean detoxification.