Co-chaperonin complex is required for substrate encapsulation during assisting the folding of the unfolded protein with the chaperonin complex. Co-chaperonin also termed as GroES, Cpn10 and Hsp10.CPN20 (AT5G20720) protein is a functional homolog of the CPN10 co-chaperonin, but it consists of two CPN10-like units joined head-to-tail by a short chain of amino acids.
