Abstract
Summary
Thyroxine in concentrations as low as 5.10-5M has been shown to markedly inhibit transaminase-tautomerase activity of the liver tyrosine oxidase system. The transaminase enzyme appears to be the most directly involved in the inhibition as determined by difference studies. The authcr is indebted to Dr. J. B. Seilands for the use of his facilities and for stimulating discussions in the course of the work.
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