A novel recombinant human interferon alpha2b with high antivirus activity by combinatorial mutagenesis / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 347-351, 2011.
Artículo
en Chino
| WPRIM
| ID: wpr-306561
ABSTRACT
In order to create a novel recombinant human interferon alpha2b (rh-IFN alpha2b) with higher biological activity, we subjected the rational designed sequence of rh-IFN alpha2b to direct evolution by strategy of the combinatorial mutagenesis. The amino acid residues at multiple sites of 52-53-55, 103-107, and 121-125 were simultaneously mutated. The resulted gene of the mutated rh-IFN a2b was cloned into the pET28a and expressed in E. coli BL21 Condon plus (RIL). The anti-virus activity of the novel interferon alpha2b was 9.3 x 10(7) IU/mg, 93 times higher than the wild type (1 x 10(6) IU/mg). The results showed that the multiple point mutation used in this study could effectively combine the site effects of rh-IFN alpha2b and increase its biological activity.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Antivirales
/
Farmacología
/
Proteínas Recombinantes
/
Datos de Secuencia Molecular
/
Secuencia de Bases
/
Mutagénesis Sitio-Dirigida
/
Interferón-alfa
/
Técnicas Químicas Combinatorias
/
Genética
/
Métodos
Límite:
Humanos
Idioma:
Chino
Revista:
Journal of Biomedical Engineering
Año:
2011
Tipo del documento:
Artículo
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