Summary of all mutants selected as suppressors to various frameshift mutations in the his-operona.

a)The various his-alleles used were: hisD3737 (CCC-CAA), hisC10106 (CCC-AUG), hisC10109 (CCC-UGG), hisD10110 (CCC-UAU), hisD10111 (CCC-AAG), or hisD10122 (CCC-CAA).b)These mutations were not sequenced but localized by transduction to a transposon closely linked to the indicated gene. The linkage between the transposon and the mutation was consistent with the mutation being in the indicated gene.