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Appl. Environ. Microbiol., 07 1995, 2762-2764, Vol 61, No. 7
Copyright © 1995, American Society for Microbiology

Pressure stabilization is not a general property of thermophilic enzymes: the adenylate kinases of Methanococcus voltae, Methanococcus maripaludis, Methanococcus thermolithotrophicus, and Methanococcus jannaschii

J Konisky, PC Michels and DS Clark
Department of Microbiology, University of Illinois, Urbana 61801, USA.

The application of 50-MPa pressure did not increase the thermostabilities of adenylate kinases purified from four related mesophilic and thermophilic marine methanogens. Thus, while it has been reported that some thermophilic enzymes are stabilized by pressure (D. J. Hei and D. S. Clark, Appl. Environ. Microbiol. 60:932-939, 1994), hyperbaric stabilization is not an intrinsic property of all enzymes from deep-sea thermophiles.

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