The availability of very high magnetic fields of up to 170,000 gauss made it worthwhile to pursue the search for a critical change in the rate of four enzyme substrate reactions. The four enzymes were ribonuclease, polyphenol oxidase, peroxidase, and aldolase. The experiments showed that, to within +/-3%, no detectable change was observable in the rate of reaction of any of the systems for periods of exposure to the magnetic field of up to 20 min.

Alcohol Oxidoreductases↗

PubMed1967

Enzyme-substrate reactions in very high magnetic fields. II.

We have examined the effect of conditioning the enzyme trypsin in solution at pH 8.2 in a large magnetic field before determining its reactivity towards a synthetic substrate N-benzoyl DL-arginine p-nitroanilide (BAPA). This "pretreatment" was allowed to proceed for as long as 3(2/3) hr in a magnetic field of 208 kgauss at temperatures 26 and 36 degrees C. No effect on reactivity was observed when such pretreated enzyme solutions were compared with identical but untreated enzyme solutions. A single such reaction, allowed to proceed directly in a magnetic field of 220 kgauss for 9 min, similarly showed no difference in rate from its control.

Anilides↗

PubMed1966

Thermoluminescence of L-tyrosine under U.V. irradiation.

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Luminescence↗

PubMed1966

Triplet ESR in L-tyrosine.

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Electron Spin Resonance Spectroscopy↗

PubMed1965

Enzyme substrate reactions in high magnetic fields.

The reaction rates of two enzyme substrate systems, ribonuclease-RNA and succinate-cytochrome c reductase, were followed as a function of magnetic field from zero to 48,000 gauss. The reaction rates remained constant to within 10 per cent.

Chemical Phenomena↗