期刊
JOURNAL OF BASIC MICROBIOLOGY
卷 48, 期 1, 页码 16-24出版社
WILEY
DOI: 10.1002/jobm.200700146
关键词
shewanella; psychrotolerant; 16S rDNA; gyrB; beta-glucosidase
类别
beta-Glucosidase is a highly desired glycosidase, especially for hydrolysis of glycoconjugated precursors in musts and wines for the release of active aromatic compounds. A Shewanella sp. G5 strain was isolated from the intestinal content of benthonic organism (Munida subrrugosa) from different coastal areas of the Beagle Channel, Tierra del Fuego (Argentina). This marine bacterium was able to grow at a temperature range between 4 to 20 degrees C using different beta-glycoside substrates, such as cellobiose, as carbon source. In this work, the Shewanella sp. G5 strain exhibited high beta-glucosidase activity on plate at low temperature (4 and 20 degrees C). Two genes encoding different cold-active beta-glucosidases were amplified and sequenced and the nucleotide sequences were submitted to the GenBank. 16S rDNA and gyrB gene sequences were used for the molecular characterization of Shewanella sp. G5.
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