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Biochemical characterization of a new β-agarase from cellulophaga algicola

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成果类型:
期刊论文
作者:
Han, Zhenggang;Zhang, Yuxi;Yang, Jiangke*
通讯作者:
Yang, Jiangke
作者机构:
[Yang, Jiangke; Han, Zhenggang; Zhang, Yuxi] Wuhan Polytech Univ, Coll Biol & Pharmaceut Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构:
[Yang, Jiangke] W
Wuhan Polytech Univ, Coll Biol & Pharmaceut Engn, Wuhan 430023, Hubei, Peoples R China.
语种:
英文
关键词:
agar;agarose;beta agarase;dithiothreitol;neoagarohexaose;neoagarotetraose;peptides and proteins;unclassified drug;agarase;bacterial protein;glycosidase;protein binding;affinity chromatography;alga;amino acid sequence;Article;bacterium;Cellulophaga Algicola;controlled study;enzyme activity;enzyme stability;Gracilaria lemaneiformis;hydrolysis;maximum reaction velocity;Michaelis constant;molecular cloning;molecular weight;nonhuman;pH;Porphyra haitanensis;protein analysis;protein expression;protein purification;salt tolerance;sequence alignment;sequence analysis;sequence homology;temperature;thermostability;thin layer chromatography;Zobellia galactanivorans;chemistry;enzyme active site;enzyme specificity;enzymology;Flavobacteriaceae;metabolism;Bacterial Proteins;Catalytic Domain;Enzyme Stability;Flavobacteriaceae;Glycoside Hydrolases;Protein Binding;Substrate Specificity
期刊:
International Journal of Molecular Sciences
ISSN:
1661-6596
年:
2019
卷:
20
期:
9
页码:
2143
基金类别:
China Ocean Mineral Resources Research and Development Association#&#&#DY135-B2-06)
机构署名:
本校为第一且通讯机构
院系归属:
生命科学与技术学院
摘要:
Cellulophaga algicola DSM 14237, isolated from the Eastern Antarctic coastal zone, was found to be able to hydrolyze several types of polysaccharide materials. In this study, a predicted β-agarase (CaAga1) from C. algicola was heterologously expressed in Escherichia coli. The purified recombinant CaAga1 showed specific activities of 29.39, 20.20, 14.12, and 8.99 U/mg toward agarose, pure agar, and crude agars from Gracilaria lemaneiformis and Porphyra haitanensis, respectively. CaAga1 exhibited an optimal temperature and pH of 40 °C and 7, re...

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