Laser Photo-CIDNP in Proteins: The Effect of Dipolar Cross-Relaxation

  • R. Kaptein
  • H. T. Edzes
Conference paper


Photo-CIDNP has been observed in the amino acids tyrosine, histidine, and tryptophan and in proteins. Polarization of CIDNP enhanced NMR lines may be transferred to other lines as a result of dipolar cross-relaxation. For proteins the sign of the transferred polarization is opposite to that observed for the amino acids.


Tyrosine Argon Trypsin Tryptophan Macromolecule 


  1. 1.
    R. Kaptein, K. Dijkstra and K. Nicolay, Nature (1978) 274 p. 293.ADSCrossRefGoogle Scholar
  2. 2.
    G.L. Gloss and M.S. Czeropski, Chem. Phys. Letters (1977) 45, p. 115.ADSCrossRefGoogle Scholar
  3. 3.
    I.D. Campbell and R. Freeman, J. Magn. Res. (1973) 11, p. 143.ADSGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1979

Authors and Affiliations

  • R. Kaptein
    • 1
  • H. T. Edzes
    • 1
  1. 1.Department of Physical ChemistryUniversity of GroningenGroningenThe Netherlands

Personalised recommendations