Abstract
Summary
A homogenate of urethan-grown S. nitrificans exhibited a marked increase in oxygen uptake when supplied with many esters. Carbamates generally exerted a lesser though significant stimulation of gas consumption. Growth on urethan therefore produced cell material containing esterase(s) characterized by broad spectrum activity. But whether carbamates are hydrolyzed by these or specific enzymes is not yet known. Acetylcholine showed the least activity of all substrates tested, although choline caused an appreciable increase in oxygen uptake.
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