title: Theoretical aspects of the structural chemistry of biotin. I. The electronic structure of biotin and protonated biotins.
mesh_terms: D001665:Binding Sites; D001710:Biotin; D007093:Imidazoles; D008956:Models, Chemical; D008968:Molecular Conformation; D011522:Protons; D011789:Quantum Theory; D013455:Sulfur; D013876:Thiophenes
chemical_list: D007093:Imidazoles; D011522:Protons; D013876:Thiophenes; D001710:Biotin; D013455:Sulfur