Prefoldin subunit 1 (Genes involved in microtubule biogenesis protein 6) (Gim complex subunit 6) (GimC subunit 6); Binds specifically to cytosolic chaperonin (c-CPN) and transfers target proteins to it. Binds to nascent polypeptide chain and promotes folding in an environment in which there are many competing pathways for nonnative proteins (109 aa)