Structural Transformation of Guanine Coordination Motifs in Water Induced by Metal Ions and Temperature
Source abstract
Abstract
The transformation effects of metal ions and temperature on the DNA base guanine (G) metal–organic coordination motifs in water have been investigated by scanning tunneling microcopy (STM). The G molecules form an ordered hydrogen-bonded structure at the water–highly oriented pyrolytic graphite interface. The STM observations reveal that the canonical G/9H form can be transformed into the G/(3H,7H) tautomer by increasing the temperature of the G solution to 38.6 °C. Moreover, metal ions bind with G molecules to form G4Fe13+, G3Fe32+, and the heterochiral intermixed G4Na1+ metal–organic networks after the introduction of alkali-metal ions in cellular environment.
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Research context
OpenAlex topics: Molecular Sensors and Ion Detection · Crystallography and molecular interactions · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics, Nanchang University, Nanchang 330031, P. R. China
Department of Science, Nanchang Institute of Technology, Nanchang 330099, P. R. China
Funding
Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Jiangxi Province
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