Pb2+-dependent DNAzyme:
17Eab	5′-ACAGACATCTCTTCTCCGAGCCGGTCGAAATAGXGAG-3′
17EG	5′-ACAGACATCTCTTCTCCGAGCCGGTCGAAATAGGGAG-3′
Substrate (a DNA/RNA chimer with a single RNA nucleotide linkage):
17S	3′-TGTCTGTAGAGAAGGrATATCCCTC-5′
Adenosine aptamer:
AAP	5′-TGTCGTTGACCTGGGGGAGTATTGCGGAGGAAGGT-3′
ssDNAs for hybridization with aptamer:
L1ab	3′-AGCAACTGXACC-5′
L2ab	3′-AGCAACTGXACCC-5′
L3ab	3′-AGCAACTGXACCCC-5′
L4ab	3′-ACAGCAACTGXACCCC-5′
L2G	3′-AGCAACTGGACCC-5′