All help in protein folding except
Zinc finger motiff The specificity involved in the control of transcription requires that regulatory proteins bind with high affinity to the Correct region of DNA. Three unique motifs - The helix-turn-helix - Zinc finger - The leucine zipper accounts for many of this specific protein DNA interactions. So zinc finger motiff helps in binding of regulatory proteins to DNA and not in protein folding.
Chaperons
Zinc finger motiff
Protein disulfide isomerase
Proline-cis, trans- isomerase