Soluble expression, purification and characterization of Bm K IT in Escherichia coli by intein-mediated system / 生物工程学报
Chinese Journal of Biotechnology
; (12): 989-994, 2007.
Article
Dans Zh
| WPRIM
| ID: wpr-276174
Responsable en Bibliothèque :
WPRO
ABSTRACT
To produce recombinant Buthus martensii Karsch insect toxin (BmK IT), BmK IT cDNA which fused a hexahistidine sequence at the C-terminus by PCR was inserted into pTWIN1 expression vector fused in frame with an upstream Ssp DnaB intein gene. The expression plasmid was transformed into E. coli BL21 (DE3) strain and protein expression was induced by IPTG. The CBD-Intein-BmK IT(his6) fusion protein was purified from cell lysates using Ni-NTA resin affinity chromatography. The intein was removed from fusion protein by on-column intein-mediated cleavage. BmK IT(his6) was purified through Superdex 75 gel chromatography to more than 95% homogeneity. The purified protein has both correct secondary structure and insecticidal activity.
Texte intégral:
1
Indice:
WPRIM
Sujet Principal:
Oligopeptides
/
Venins de scorpion
/
Transformation génétique
/
Protéines de fusion recombinantes
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Chromatographie d'affinité
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Chromatographie sur gel
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Intéines
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Escherichia coli
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Génétique
/
Histidine
Limites du sujet:
Animals
langue:
Zh
Texte intégral:
Chinese Journal of Biotechnology
Année:
2007
Type:
Article