Table S3.
Oligonucleotides used in the single-molecule experiments
| Name | Sequence (5′ to 3′) |
| Handle | Biotin/TGG CGA CGG CA/iCy5/G CGA GGC |
| d(TGGAA)2 | Cy3/ (TGGAA)2 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)3 | Cy3/ (TGGAA)3 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)4 | Cy3/ (TGGAA)4 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)5 | Cy3/ (TGGAA)5 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)6 | Cy3/ (TGGAA)6 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)7 | Cy3/ (TGGAA)7 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)8 | Cy3/ (TGGAA)8 GCCTCGCTGCCGTCGCCA |
| dT5(TGGAA)3 | Cy3/ T5(TGGAA)3 GCCTCGCTGCCGTCGCCA |
| d(TGGAA)3T5 | Cy3/ (TGGAA)3T5 GCCTCGCTGCCGTCGCCA |
| dT10 | Cy3/ T10 GCCTCGCTGCCGTCGCCA |
| dT15 | Cy3/ T15 GCCTCGCTGCCGTCGCCA |
| d(TTCCA)3–6 | (TTCCA)3–6 |
| dTGGAATT3ATGGAA | Cy3/TGGAATTTTATGGAAGCCTCGCTGCCGTCGCCA |
| dTGGAATT8ATGGAA | Cy3/TGGAATTTTTTTTTATGGAAGCCTCGCTGCCGTCGCCA |
| d(TGGAA)2TT8A(TGGAA)2 | Cy3/(TGGAA)2TTTTTTTTTA(TGGAA)2GCCTCGCTGCCGTCGCCA |
| 3GGA_ATA | Cy3/(TGGAA)2TATAA(TGGAA)3GCCTCGCTGCCGTCGCCA |
| 5GGA_ATA | Cy3/(TGGAA)4TATAATGGAAGCCTCGCTGCCGTCGCCA |
| 3&5GGA_ATA | Cy3/(TGGAA)2TATAATGGAATATAATGGAAGCCTCGCTGCCGTCGCCA |