Table 1.

DNA constructs employed for spFRET measurements

DNA length [bp]	ATTO680-5′ -> 3′	ATTO740-5′ -> 3
8	CCTGCAGG	CCTGCAGG
10	CCTGCAGTGG	CCACTGCAGG
12	CCTGCAGTACGG	CCGTACTGCAGG
14	CCTGCACGACCTGG	CCAGGTCGTGCAGG
16	CCTGCACGACCTGTGG	CCACAGGTCGTGCAGG