sentence: It may well directly promote subunit preassembly , or , alternatively , indirectly promote it by functioning as a co-chaperone required for the proper folding of the DHC9 polypeptide.Immunoprecipitation experiments using anti-p28 antibody precipitated the dynein c heavy chain and actin from the cytoplasmic extract of wild type , whereas it precipitated only a little of them from the ida10 extract ( Fig. 4 E ) .