Purification Process for Heat Shock Proteins Using Aqueous Two-Phase System and PEG Fractional Precipitation

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Tetsuhiro Hasegawa¹  Isao Komasawa¹  Koji Yano¹  Ryoichi Kuboi¹ 

[1] Department of Chemical Engineering, Osaka University

关键词: Heat Shock Protein;    Aqueous Two-Phase System;    PEG Fractional Precipitation;    Surface Property;    Biospecific Affinity;   

DOI  :  10.1252/jcej.28.797

来源: Maruzen Company Ltd

【 摘 要 】

References(17)Cited-By(3)A simple and effective purification process for heat shock proteins (HSPs), in which PEG fractional precipitation was combined with an aqueous two-phase system (ATPS), was successfully developed based upon the proteins’ molecular surface properties. Both GroEL and GroES, typical HSPs from E. coli, were selectively partitioned to the PEG (top) phase of the ATPS. GroEL and GroES were selectively and stepwisely concentrated from the above PEG phase by PEG fractional precipitation. In addition, the purification of GroEL and GroES as a complex by using biospecific affinity with adenosine triphosphate (ATP) was achieved. GroEL and GroES can be purified either as individual native molecules or as a 1:1 complexed state by the control of ATP addition.

【 授权许可】

Unknown