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MULTI-WAVELENGTH ANOMALOUS DIFFRACTION [1 record]

Record 1 2011-12-14

English

Subject field(s)
  • Electromagnetic Radiation
DEF

An approach to solving the phase problem in protein structure determination by comparing structure factors collected at different wavelengths, including the absorption edge of a heavy-atom scatterer.

Key term(s)
  • multi-wavelength anomalous diffraction
  • multi-wavelength anomalous dispersion
  • multiple wavelength anomalous diffraction
  • M.A.D.

French

Domaine(s)
  • Rayonnements électromagnétiques
CONT

Outre [l’] expérience classique de biocristallographie, deux techniques sont développées en parallèle et sont exclusives du rayonnement synchrotron. La première est la méthode MAD (multiple-wavelength anomalous diffraction) qui consiste à exploiter la diffusion anomale d’un atome lourd inclus dans la protéine et à déterminer sa position, puis à aider au phasage, à partir de la collecte de données autour du seuil d’absorption.

Key term(s)
  • diffraction anomale multi-longueurs d'ondes
  • méthode M.A.D.

Spanish

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