Aptamers, NucleotideSELEX Aptamer TechniqueBase SequenceNucleic Acid ConformationNucleotidesThrombinMolecular Sequence DataAptamers, PeptideProtein BindingDNARiboswitchPolymorphism, Single NucleotideAdenine NucleotidesGuanine NucleotidesAmino Acid SequenceRNAPurine NucleotidesCloning, MolecularOligonucleotidesBinding SitesSequence Homology, Nucleic AcidBiosensing TechniquesNucleotides, CyclicGuanine Nucleotide Exchange FactorsSequence Analysis, DNAEscherichia coliPyrimidine NucleotidesModels, MolecularMutation