title: Measurement of the base number of DNA using a special calliper made of a split G-quadruplex.
abstract: A special DNA calliper made of a split G-quadruplex was constructed to measure the length of DNA in a single-digit base number range between two selected sequences. The enhanced fluorescence of PPIX changed with the distance between two G-rich segments.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
authors.forename: Jinbo
authors.initials: J
authors.lastname: Zhu
authors.forename: Libing
authors.initials: L
authors.lastname: Zhang
authors.forename: Erkang
authors.initials: E
authors.lastname: Wang
mesh_terms: D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D005453:Fluorescence; D054856:G-Quadruplexes; D011524:Protoporphyrins / Q000737:chemistry; D013050:Spectrometry, Fluorescence
chemical_list: D011524:Protoporphyrins; D004247:DNA; C028025:protoporphyrin IX