title: G-Quadruplex-based DNAzyme as a sensing platform for ultrasensitive colorimetric potassium detection.
abstract: Two G-quadruplex DNAs are able to form peroxidase-like DNAzymes selectively promoted by K(+), which provides a label-free approach to colorimetric detection of K(+) with the highest sensitivity ever reported.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Li
authors.forename: Erkang
authors.initials: E
authors.lastname: Wang
authors.forename: Shaojun
authors.initials: S
authors.lastname: Dong
mesh_terms: D015374:Biosensing Techniques; D003124:Colorimetry / Q000379:methods*; D021881:DNA, Catalytic / Q000737:chemistry*; D054856:G-Quadruplexes; D006427:Hemin / Q000737:chemistry; D011188:Potassium / Q000032:analysis*
chemical_list: D021881:DNA, Catalytic; D006427:Hemin; D011188:Potassium