GroES protein is the co-chaperonin of GroES in E. coli and assists protein folding. GroEL mediated folding requires the co-chaperonin GroES which is essential for viability. GroES is composed of a single heptameric ring of 10kDa subunits that binds to the ends of the GroEL cylinder. GroES gene was amplified by PCR from E. coli and cloned into an expression vector. This protein was overexpressed in E. coli and was purified by using conventional chromatography techniques. Alternative Names: CPN10 protein, 10 kDa chaperonin protein, groS protein, 10 kDa heat shock protein mitochondrial protein, HSP 10 protein, HSP10 protein, , EPF protein, mopB protein, Heat shock 10kDa protein 1 chaperonin 10 protein, Heat shock 10kD protein 1 chaperonin 10 protein, GroES protein, HSPE 1 protein, HSPE1 protein, Cpn 10 protein, Chaperonin 10 protein, Heat shock 10kDa protein 1 protein, Early pregnancy factor protein