Preparation of PTD4-Cu,Zn-SOD fusion protein
10.3760/cma.j.issn.0254-1416.2017.08.011
- VernacularTitle:PTD4-Cu,Zn-SOD融合蛋白的制备
- Author:
Shajie DANG
1
;
Wenbo WEI
;
Lichun HAN
;
Wenbin ZENG
;
Huiyu YUE
;
Rongliang XUE
Author Information
1. 陕西省肿瘤医院麻醉科
- Keywords:
tat Gene products,human immunodeficiency virus;
Protein structure,tertiary;
Su-peroxide dismutase;
Proteins
- From:
Chinese Journal of Anesthesiology
2017;37(8):939-942
- CountryChina
- Language:Chinese
-
Abstract:
Objective To prepare PTD4-Cu,Zn-SOD fusion protein.Methods The recombinant plasmid of pET 1 6b-Cu,Zn-SOD and pET16b-PTD4-Cu,Zn-SOD was transformed into Escherichia coli BL21 (DE3).Isopropyl β-D-1-thiogalactopyranoside was then added at a final concentration of 0.84 mmol/L,and the cells were incubated for 4 h to induce the expression of Cu,Zn-SOD and PTD4-Cu,Zn-SOD fusion protein.Lysozyme and ultrasound were used to lyse the bacteria,the supernatant was collected for 15% SDS-PAGE to analyze the expression of the target protein.Ni-NTA His bind resin was used to purify Cu,Zn-SOD protein and PTD4-Cu,Zn-SOD fusion protein under natural conditions.Western blot was used to identify the target protein.Results The results of Western blot showed that the purity of the target protein was about 90%,and the Cu,Zn-SOD protein with a molecular weight about 19 kDa and the PTD4-Cu,Zn-SOD fusion protein with a molecular weight about 20 kDa were found.Conclusion PTD4-Cu,Zn-SOD fusion protein is prepared successfully.