| Here , we show that ( 1 ) rat brain striatin , SG2NA and zinedin co immunoprecipitate with caveolin 1 ; ( 2 ) all are pulled down by glutathione S transferase ( GST ) caveolin 1 ; ( 3 ) a fragment of recombinant striatin containing the putative caveolin binding domain binds GST caveolin 1 . ^^^ |