期刊
JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM
卷 763, 期 1-3, 页码 165-174出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.theochem.2006.01.013
关键词
molecular dynamics; lipocalin; proteins structures; odorant; olfaction
The dynamic behaviour analysis of porcine OBP, free of ligand, and complexed with 2-isobutyl-3-methoxypyrazine and 2,6-dimethyl-7-octen-2-ol has been performed by means of molecular dynamics simulations. The simulations reveal that the OBP cavity, while being hydrophobic, is likely to produce hydrophilic interactions with some of the internal residues. A large evolution of the OBP cavity volume has been observed, ranging between 400 and 800 angstrom(3) independently of the ligand buried into the cavity. The hydrophobic cavity is shielded from the solvent, but openings have been observed, triggered by shifts of residues considered to constitute the door of the cavity, especially tyrosine 82. (c) 2006 Elsevier B.V. All rights reserved.
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