N-terminally His-tagged hepatitis B core antigens: Construction, expression, purification and antigenicity

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N-terminally His-tagged hepatitis B core antigens: construction, expression, purification and antigenicity.

The core antigen of the hepatitis B virus (HBcAg) has been used widely as a diagnostic reagent for the identification of the viral infection. However, purification using the conventional sucrose density gradient ultracentrifugation is time consuming and costly. To overcome this, HBcAg particles displaying His-tag on their surface were constructed and produced in Escherichia coli. The recombinan...

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Expression of S and pre s2 Hepatitis B Surface Antigens in Mammalian Cos-7 Cell Line

Hepatitis B virus (HBV) is a serious global health problem. The development of a safe and effective vaccinewould help infection prevention. Previous hepatitis B vaccine production involved the isolation of the noninfectious particle from chronic HBV carriers. DNA recombinant technology has been used for vaccineproduction without having been contaminated with blood-born infectious ag...

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Synchronized purification and immobilization of his-tagged β-glucosidase via Fe3O4/PMG core/shell magnetic nanoparticles

In this paper, an efficient and convenient Fe3O4/PMG/IDA-Ni2+ nanoparticles that applied to purify and immobilize his-tagged β-glucosidase was synthesized, in which, Fe3O4/PMG (poly (N, N'-methylenebisacrylamide-co-glycidyl methacrylate) core/shell microspheres were synthesized firstly using distillation-precipitation polymerization, then iminodiacetic acid (IDA) was used to open epoxy rings on...

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Expression, characterization, and purification of C-terminally hexahistidine-tagged thromboxane A2 receptors.

Thromboxane A2 (TxA2) receptors belong to the class of G-protein-coupled receptors. Knowledge of the relationship of structure to function for TxA2 receptors is limited because of their low levels of expression, lengthy purification procedures and poor recoveries. A C-terminal hexahistidine-tag (C-His) was ligated to the alpha-isoform of TxA2 receptors and expressed in COS-7 and Chinese hamster...

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ژورنال

عنوان ژورنال: Journal of Virological Methods

سال: 2009

ISSN: 0166-0934

DOI: 10.1016/j.jviromet.2009.04.038