Scale Modeling of Medical Molecular Systems

  • Tatsuhiko Kikkou
  • Shinichiro Iwabuchi
  • Osamu Matsumoto


Human body is mainly made by several biomacromolecules. The mal-function of proteins and nucleic acids set up our diseases; it would be considered that ca. 70% of human diseases occurred by that of receptor proteins, especially. Therefore the clarification of relationship between structure and function on bio-macromolecule is one of the highest priorities in the pharmaceutical science field. Nowadays, several technical innovations on structural biology (sample expression by genetic technology, innovation of measurements; i.e. SOR (Synchrotron Orbit Radiation) or giant NMR (Nuclear Magnetic Resonance) and so on, structural analysis calculation by super computer) make easy to analyze stereo structure of macromolecules. However, number of determined structures would not clear up the relationship between structure and function on biomacromolecules systematically.

On the other hand, the author found the molecular model on biomacromolecule resembles a “space truss structure” in the Building Engineeringtectonics or a “space link” in the Mechanics. Therefore the molecular model must be obeyed by the rules on these Kinematics at least, and a real molecule may be obeyed also. The simplest principle, the balance of internal degree of freedom and number of restraints in the molecule, would be determined the molecular stiffness or flexibility or mechanism. DNA and some protein structures will be discussed under the principle.


Medical molecular system degree of freedom protein nucleic acid enzyme receptor 


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© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Tatsuhiko Kikkou
  • Shinichiro Iwabuchi
  • Osamu Matsumoto
    • 1
  1. 1.Department of Pharmaceutical SciencesChiba Institute of ScienceChoshiJapan 288-0025

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