The IOBCr community is interested in growing crystals with biomolecules because they provide a means to study the architecture of the molecules making up the crystals. A crystal is composed of (bio)molecules assembled in a regular, 'periodic' way in the three dimensions.


This regularity or periodicity is at the origine of the diffraction phenomenon when a crystal interacts with X-rays. The resulting signal is used by crystallographers to determine 3D pictures of the molecules that constitute the crystal.












From the biomolecule to its 3D picture

Related organizations

  • International Union of Crystallography (IUCr)
  • American Crystallographic Association (ACA)
  • Asian Crystallographic Association (AsCA)
  • European Crystallographic Association (ECA)



  • Biological Macromolecule Crystallization Database (BMCD)
  • Protein Data Bank (PDB)
  • Nucleic Acid Database (NDB)




Dr Lata Govada - This email address is being protected from spambots. You need JavaScript enabled to view it.

Imperial College London (South Kensington Campus), London, UK


Dr May Marsh - This email address is being protected from spambots. You need JavaScript enabled to view it.

Paul Scherrer Institut, Swiss Light Source (SLS), Villigen, Switzerland


Dr Claude Sauter - c.sauter[at]ibmc-cnrs.unistra.fr

Institut de Biologie Moléculaire et Cellulaire (IBMC - CNRS), University of Strasbourg, France


Dr Monika Budayova-Spano - monika.spano[at]ibs.fr

Institut de Biologie Structurale (IBS), Grenoble, France

Executive board

José A. Gavira (Armilla, Spain), Ivana Kutá Smatanová (Ceske Budejovice, Czech Republic), Jeroen Mesters (Lübeck, Germany), Janet Newman (Melbourne, Australia), Da-Chuan Yin (Xi'an, PR China).


Christian Betzel, Monika Budayova-Spano, Martin Caffrey, Petra Fromme, Jose A. Gavira, Valentin Gordeliy, Lata Govada, Ivana Kuta Smatanova, Dianfan Li, James Liu, Hartmut Luecke, Dominique Maes, May Marsh, Jeroen Mesters, Abel Moreno, Janet Newman, Dominik Oberthür, Sarah Perry, Marc Pusey, Pavlina Rezacova, Claude Sauter, Edward Snell, Peter Vekilov, Laura Vera, Da-Chuan Yin.

The International Organization for Biological Crystallization (IOBCr) is a non-profit, scientific organization for scientists who study the crystallization of biological macromolecules and develop crystallographic methodologies for their study. It was founded in 2002 to create a permanent organ for the organization of the International Conferences for the Crystallization of Biological Macromolecules (ICCBM). The goal is to facilitate the preparation of biological crystals necessary for the determination of the 3D architecture of biomolecules by crystallography. These 3D pictures provide a wealth of information that help understand how biomolecules act and interact in living organisms.