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Cellulolytic potential of a novel strain of Paenibacillus sp. isolated from the armored catfish Parotocinclus maculicauda gut BJM
Castro,André L. M. de; Vollú,Renata E.; Peixoto,Raquel S.; Grigorevski-Lima,André L.; Coelho,Rosalie R. R.; Bon,Elba P. S.; Rosado,Alexandre S.; Seldin,Lucy.
A cellulolytic bacterial strain, designated P118, isolated from the gut of the tropical fish Parotocinclus maculicauda was identified as belonging to the genus Paenibacillus based on phenotypic and chemotaxonomic characteristics and the 16S rRNA gene sequence. The novel strain was Gram-positive, spore-forming and rod-shaped. Catalase but not oxidase was produced. Carboxymethylcellulose was hydrolyzed but starch or gelatin was not. Acetoin production was negative whereas nitrate reduction and urease production were positive. Many carbohydrates served as carbon sources for growth. MK-7 was the predominant isoprenoid quinone. Anteiso-C15:0 (38.73%) and C16:0 (20.85%) were the dominant cellular fatty acids. Strain P118 was closely related to Paenibacillus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bioprospection; Cellulose degradation; Paenibacillus sp.; Parotocinclus maculicauda; Taxonomy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000400048
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Detection of proteases from Sporosarcina aquimarina and Algoriphagus antarcticus isolated from Antarctic soil Anais da ABC (AABC)
Santos,Anderson F.; Pires,Fabiano; Jesus,Hugo E.; Santos,André L.S.; Peixoto,Raquel; Rosado,Alexandre S.; D'Avila-Levy,Claudia M.; Branquinha,Marta H..
Two psychrophilic bacterial samples were isolated from King George Island soil, in Antarctica. The phylogenetic analysis based on the 16S rRNA (rrs) gene led to the correlation with the closest related isolates as Sporosarcina aquimarina (99%) and Algoriphagus antarcticus(99%), with query coverage of 99% and 98%, respectively.The spent culture media from both isolates displayed proteolytic activities detected by sodium dodecyl sulfate polyacrylamide gel electrophoresis containing gelatin as protein substrate. Under the employed conditions, S. aquimarina showed a 55 kDa protease with the best activity detected at pH 7.0 and at 27°C. A. antarcticusalso showed a single extracellular protease, however its molecular mass was around 90kDa and its best activity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Algoriphagus antarcticus; Antarctica; Sporosarcina aquimarina; Protease.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100109
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