title: Unmodified gold nanoparticles as a colorimetric probe for potassium DNA aptamers.
abstract: Unmodified gold nanoparticles effectively differentiate unfolded and folded DNA, thus providing a novel approach to colorimetrically probe aptamer-based recognition processes.
authors.affiliation: Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
authors.forename: Lihua
authors.initials: L
authors.lastname: Wang
authors.forename: Xingfen
authors.initials: X
authors.lastname: Liu
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Hu
authors.forename: Shiping
authors.initials: S
authors.lastname: Song
authors.forename: Chunhai
authors.initials: C
authors.lastname: Fan
mesh_terms: D052157:Aptamers, Nucleotide / Q000032:analysis* / Q000737:chemistry; D001483:Base Sequence; D015374:Biosensing Techniques / Q000379:methods*; D003124:Colorimetry / Q000379:methods*; D015342:DNA Probes; D017979:Gold Colloid / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D009690:Nucleic Acid Conformation; D011188:Potassium / Q000737:chemistry*
chemical_list: D052157:Aptamers, Nucleotide; D015342:DNA Probes; D017979:Gold Colloid; D011188:Potassium