| We have found that the ATDC protein physically interacts with the intermediate filament protein vimentin , which is a protein kinase C substrate and colocalizing protein , and with an inhibitor of protein kinase C , hPKCI 1 . ^^^ Indirect immunofluorescence analysis of cultured cells transfected with a plasmid encoding an epitope tagged ATDC protein localizes the protein to vimentin filaments . ^^^ |