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Isolation of a thermostable uricase-producing bacterium and study on its enzyme production conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
36583 45137 2005 5 PDF Available
Title
Isolation of a thermostable uricase-producing bacterium and study on its enzyme production conditions
Abstract

A uricase-producing bacterium was isolated from soil with a medium containing uric acid as the only carbon source. Based on its morphological and physiological characteristics, as well as 16S rDNA sequence and phylogenetic tree analysis, this new isolate belong to the genus Microbacterium. After heat treatment at 70 °C for 30 min, the uricase retained about 100% of the initial activity. The enzyme activity remained largely unchanged when it was stored in borate buffer at pH 8.5 at 37 °C for 40 days. The effects of different factors on the enzyme production were studied. Maize milk was the best C and N resources, and the uric acid showed to be an inducer for uricase production. When the strain was cultured at 30 °C at pH 7.5 for 30–36 h, the uricase activity peaked at 1.0 U/ml.

Keywords
Uricase; Thermostable enzyme; Microbacterium sp
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Isolation of a thermostable uricase-producing bacterium and study on its enzyme production conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 40, Issue 12, December 2005, Pages 3749–3753
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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