Prokaryotic expression of pathogenesis related protein 1 gene from Nicotiana benthamiana: antifungal activity and preparation of its polyclonal antibody

F Zhu, M Xu, S Wang, S Jia, P Zhang, H Lin, D Xi - Biotechnology letters, 2012 - Springer
F Zhu, M Xu, S Wang, S Jia, P Zhang, H Lin, D Xi
Biotechnology letters, 2012Springer
The nucleotide sequence of the pathogenesis-related protein 1 (PR-1) gene was obtained
from Nicotiana benthamiana using RT-PCR. Restriction enzyme cutting sites of Eco RI and
Not I were introduced to the ORF fragments of PR-1, they were then linked together with pET-
30a (+) and transformed into E. coli BL21 (DE3). The target protein was induced by 1.5 mM
IPTG, at 37° C for 4 h. The expressed protein was purified by Ni–NTA and an anti-NbPR-1
polyclonal antibody was prepared using rabbits. The antibody could detect the expression of …
Abstract
The nucleotide sequence of the pathogenesis-related protein 1(PR-1) gene was obtained from Nicotiana benthamiana using RT-PCR. Restriction enzyme cutting sites of EcoRI and NotI were introduced to the ORF fragments of PR-1, they were then linked together with pET-30a (+) and transformed into E. coli BL21 (DE3). The target protein was induced by 1.5 mM IPTG, at 37°C for 4 h. The expressed protein was purified by Ni–NTA and an anti-NbPR-1 polyclonal antibody was prepared using rabbits. The antibody could detect the expression of PR-1 in N. benthamiana and other Nicotiana plants. NbPR-1 protein has four α-helices and two β-sheets by homology modeling. Furthermore, the purified NbPR-1 protein exhibited a broad-spectrum antifungal activity.
Springer
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