the roles of the qa-1f and qa-1s regulatory genes of neurospora in modifying the chromatin structure of two qa structural genes have been studied by mapping dnase i hypersensitive sites in qa chromatin isolated from wild-type , qa-1f- ( non-inducible ) mutants , qa-1sc ( constitutive ) mutants , qa-1s- ( non-inducible ) mutants , and from activator protein-independent mutants of qa-2 ( qa-2ai ) .
C0017362
regulatory genes
C0968902
activator protein