Protein flexibility: its role in structure and mechanism revealed by molecular simulations.
Computer simulations at the atomic level have arrived at a stage where they provide realistic modeling of flexibility in proteins (and the mobility of their associated solvent) that is important in understanding the nature of molecular motions. This can now be extended to the molecular and atomic motions that are associated with protein mechanisms. Moreover, the derived data agree reasonably accurately with experimental measurements of several kinetic and thermodynamic parameters. Fundamental insights emerge on the roles that this intrinsic flexibility plays in the thermodynamic characteristics of macromolecules in solution; these equip the investigator to probe the consequences of cognate interactions and ligand binding on entropy and enthalpy. Thus simulations can now provide a powerful tool for investigating protein mechanisms that complements the existing and the emerging experimental techniques.
Dodson
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Division of Protein Structure, National Institute for Medical Research, The Ridgeway, Mill Hill, London, NW7 1AA, United Kingdom.
Verma
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CS
D002147:Calmodulin / Q000737:chemistry; D018835:Chaperonin 10 / Q000737:chemistry; D003198:Computer Simulation; D018360:Crystallography, X-Ray; D006860:Hydrogen Bonding; D057927:Hydrophobic and Hydrophilic Interactions; D008024:Ligands; D008049:Lipase / Q000737:chemistry; D008958:Models, Molecular; D018583:Pliability; D011328:Prions / Q000737:chemistry; D011487:Protein Conformation; D017433:Protein Structure, Secondary; D013329:Structure-Activity Relationship; D014867:Water / Q000737:chemistry
D002147:Calmodulin; D018835:Chaperonin 10; D008024:Ligands; D011328:Prions; D014867:Water; D008049:Lipase