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extraction of an urease-active organo-complex from soil.Description of an extraction from a Dublin clay loam soil of a colloidal organic matter complex that is urease active and, by X-ray analysis, free of clays. Urease activity in the clay-free precipitates, as in the soil, was not destroyed by the activity of an added proteolytic enzyme, pronase. This is attributed to the circumstance that native soil urease resides in organic colloidal particles with pores large enough for water, urea, ammonia, and carbon dioxide to pass freely, but nevertheless small enough to exclude pronase.
Document ID
19720045733
Document Type
Reprint (Version printed in journal)
Authors
Burns, R. G.
El-Sayed, M. H.
Mclaren, A. D.
(California, University Berkeley, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Publication Information
Publication: Soil Biology and Biochemistry
Volume: 4
Subject Category
CHEMISTRY
Funding Number(s)
CONTRACT_GRANT: NGL-05-003-079
Distribution Limits
Public
Copyright
Other