<prompt> Chaperones are:Purine metabolism mediatorsAntigen presenting cellsMediators of post-transitional assembly of protein complexesNone of the above  <response>: CHAPERONES-FOLDING SHAPE ASSEMBLY OF PROTEIN POST-TRANSITIONAL CHANGE They facilitate and our the interactions on the polypeptide surfaces to finally give the specific conformation of a protein. Type 1. Hsp70 system- This mainly consists of Hsp70 70-kDa heat shock protein and Hsp40 40-kDa Hsp. These proteins can bind individually to the substrate protein and help in the correct formation of protein folding 2. Chaperonin system: This is a large oligomeric assembly which forms a structure into which the folded proteins are inseed. The chaperonin system mainly has Hsp60 and Hspl0. 