Acid-facilitated G-quadruplex/hemin DNAzymes: accompanied by the assembly of quadruplex supramolecules†
Abstract
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.