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Expression, purification, and characterization of arginine kinase from the sea cucumber Stichopus japonicus

机译:海参刺参中精氨酸激酶的表达,纯化及鉴定

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摘要

The arginine kinase gene of sea cucumber Stichopus japonicus was cloned and inserted into the prokaryotic expression plasmid pET-21b. The protein was expressed in a soluble and functional form in Escherichia coli and purified by Blue Sepharose CL-6B, DEAE-32, and Sephadex G-100 chromotography with a final yield of 83mgL(-1) of LB medium, The specific activity, electrophorctic mobility, and isoelectric focusing were all identical with those of arginine kinase that was purified from sea cucumber muscle. The fluorescence emission spectrum of arginine kinase had a maximum fluorescence at a wavelength of 330 nm upon excitation at 295 nm. These results are the first report of this purified protein. (C) 2003 Elsevier Science (USA). All rights reserved. [References: 20]
机译:克隆了刺参刺参的精氨酸激酶基因,并将其插入原核表达质粒pET-21b中。该蛋白质在大肠杆菌中以可溶性和功能性形式表达,并通过Blue Sepharose CL-6B,DEAE-32和Sephadex G-100层析纯化,最终产量为LB培养基83mgL(-1),比活性,电泳迁移率和等电聚焦均与从海参肌肉中纯化的精氨酸激酶相同。精氨酸激酶的荧光发射光谱在295nm激发时在330nm的波长处具有最大荧光。这些结果是该纯化蛋白的首次报道。 (C)2003 Elsevier Science(美国)。版权所有。 [参考:20]

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