Study on the complex site of L-tyrosine with rare-earth element Eu3+

Spectrochim Acta A Mol Biomol Spectrosc. 2003 Mar 1;59(4):657-62. doi: 10.1016/s1386-1425(02)00178-6.

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).

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Binding Sites
  • Calorimetry, Differential Scanning / methods
  • Europium / chemistry*
  • Infrared Rays
  • Magnetic Resonance Spectroscopy
  • Microscopy, Electron, Scanning
  • Models, Chemical
  • Spectrophotometry / methods
  • Spectroscopy, Fourier Transform Infrared / methods
  • Temperature
  • Tyrosine / chemistry*
  • Ultraviolet Rays

Substances

  • Tyrosine
  • Europium