Table 1. DNA oligomers used to build X-shaped DNA.

Oligo 1	5′-CGAGTCGTTCGCAATACGGCTGTACGTATGGTCTCG-3′
Oligo 2	5′-CGAGACCATACGTACAGCACCGCTATTCATCGGTCG-3′
Oligo 3	5′-CGACCGATGAATAGCGGTCAGATCCGTACCTACTCG-3′
Oligo 4	5′-CGAGTAGGTACGGATCTGCGTATTGCGAACGACTCG-3′