Four types of quadruplex supramolecules containing G-quadruplex (G4)–I-motif interfaces were assembled under slightly acidic conditions, which can interact with hemin to form I-motif-linked G4/hemin DNAzymes. Our data demonstrated that some I-motif-linked DNAzymes are highly acid-dependent due to the stabilization of hemiprotonated cytosine–cytosine (C˙CH+) pairs for the G4 units.
Y. Cao, W. Li, P. Ding and R. Pei, Chem. Commun., 2020, 56, 8667 DOI: 10.1039/D0CC03082A
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