both the single dna-dependent rna polymerase found in zinc-deficient ( -zn ) euglena gracilis and the rna polymerase iii from zinc-sufficient ( +zn ) cells have been isolated by methods previously used to purify polymerases i and ii [ falchuk , k. h. , mazus , b. , ulpino , l. , & vallee , b. l. ( 1976 ) biochemistry 15 , 4468 ; falchuk , k. h. , mazus , b. , ulpino , l. , & vallee , b. l. ( 1977 ) biochem . biophys . res . commun . 74 , 1206 ] .
C0035681
dna-dependent rna polymerase
C0035680
rna polymerase iii