the relationship between t-antigen interactions at site i and the presence of a nucleosome-free promoter in sv40 chromatin was examined by analyzing chromatin from mutants defective for t-antigen interaction at site i ( cs 1085 , scs111 , and tsa58 ) and their parental wild-type strains ( 776 , svs , and va45-54 , respectively ) .
C0028623
nucleosome
C0008546
chromatin