tokens: The mutation experiments showed that the most critical sequence for the repression of PTH was 5 ' - GGGGGAGGGGAG-3 ' ( +1 to +12 ) of PTHSR .
folded_tokens: the mutation experiment show that the most critical sequence for the repression of pth be 5 ' - gggggaggggag-3 ' ( +1 to +12 ) of pthsr .