On-column Refolding of EC-SOD Inclusion Bodies, Purification and Stability Study
- VernacularTitle:EC-SOD包涵体的柱上复性、纯化及稳定性研究
- Author:
Xi-Qiang ZHU
;
Qin-Sheng YUAN
;
- Publication Type:Journal Article
- Keywords:
Recombinant hEC-SOD, Inclusion bodies, On-column refolding, Purification
- From:
Microbiology
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
EC-SOD inclusion bodies was refolded on column using metal (Ni) affinity chromatography, based on the metal-binding property of His-tag. The effect of protein amount, urea removal speed and temperature on refolding was observed. We compared the different efficiency purified with Ni-sepharose and Heprain-sepharose affinity chromatography, and studied the stability of the refolded proteins. The results indicate that the inclusion bodies can be renatured with Ni-sepharose affinity chromatography. The increase of the protein amount and urea removal rate , the lower of the renaturation efficiency. Higher temperature was benefit to protein renaturation. Both the Ni-sepharose and Heprain-sepharose affinity column can be used to purified the refolded proteins, but purified by Heprain-sepharose affinity column the protein had higher activity. The activity of renatured protein was stable in 10 ℃～50℃,when pH10 its stability was lower significantly. In denaturating solution the stability of renatured protein was low.
