title: Study on the complex site of L-tyrosine with rare-earth element Eu3+.
abstract: Amino acids are the primary units of proteins and play an important role in human life. The coordinate of L-tyrosine with rare-earth element Eu(3+) was investigated in solution by ultraviolet and was proved the molar ratio is 1:2. Then the solid complex was prepared by coprecipitation method. The complex was characterized by several analytical techniques, including Fourier Transform Infrared Spectroscopy, Differential Scanning Calorimetry, Scanning Electron Microscopy, 1H-NMR and 13C-NMR. Based on these data, we found that pentatomic ring was formed by binding with N atom in group of amino (-NH(2)) and O atom in group of carboxyl (-COOH).
authors.affiliation: The Test and Analysis Center of Shanxi University, Shanxi 030006, Taiyuan, People's Republic of China.
authors.forename: Hao
authors.initials: H
authors.lastname: Xu
authors.forename: Liang
authors.initials: L
authors.lastname: Chen
mesh_terms: D001665:Binding Sites; D002152:Calorimetry, Differential Scanning / Q000379:methods; D005063:Europium / Q000737:chemistry*; D007259:Infrared Rays; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D013053:Spectrophotometry / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D013696:Temperature; D014443:Tyrosine / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D014443:Tyrosine; D005063:Europium