Source of soil protease based on the splitting sites of a polypeptide |
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| Authors: | Katsuji Watanabe Koichi Hayano |
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| Institution: | 1. National Institute of Agro-Environmental Sciences , Tsukuba , 305 , Japan;2. Research Institute for Bioresources , Okayama University , Kurashiki, 710 , Japan;3. National Institute of Agro-Environmental Sciences , Tsukuba , 305 , Japan |
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| Abstract: | Abstract Soil protease is an important enzyme in the nitrogen cycle which plays an essential role in the growth of various crops. We have attempted to identify a microbial source of soil protease. Selective soil incubation using antibiotics was suitable for a rough estimation of the groups of microorganisms responsible for the production of soil protease (Hayano and Watanabe 1990; Hayano 1993). Enumeration of proteolytic microorganisms in the field and analysis of their protease-producing ability enabled to evaluate the potential of various soil microorganisms for soil protease production (Watanabe and Hayano 1993a; Watanabe et al. 1994). For the accurate estimation of the soil protease source, the characteristics of the soil protease and microbial protease must be compared directly based on enzymatic properties as indices. |
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| Keywords: | paddy field polypeptide proteolytic Bacillus spp soil protease |
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