Structure analysis Small molecules true Targets Peptides and amino acids This includes the structures of drugs, drug target, their interactions and binding affinities. Also the structures of reactants or products of metabolism, for example small molecules such as including vitamins, polyols, nucleotides and amino acids. Also the physicochemical, biochemical or structural properties of amino acids or peptides. Also structural and associated data for toxic chemical substances. Drug targets CHEBI:23367 Small_molecules beta12orEarlier Drugs and target structures Peptides Drug structures Chemical structures Toxins and targets Small molecules include organic molecules, metal-organic compounds, small polypeptides, small polysaccharides and oligonucleotides. Structural data is usually included. This concept excludes macromolecules such as proteins and nucleic acids. Toxins Small molecules of biological significance, typically archival, curation, processing and analysis of structural information. Metabolite structures Amino acids Target structures