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Molecular Dynamics Study of the Internal Water Molecules in Vasopressin and Oxytocin Receptors

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The role of the internal water molecules in vasopressin and oxytocin receptors has been investigated via molecular dynamics simulations in hydrated membrane model. Several water molecules have been identified within the binding pockets of receptors, where they interact with the conserved residues. In all unliganded receptors, the water molecules bound to the highly conserved D2.50 cluster have been observed. It has been proposed which water molecules may significantly contribute to the stability of overall receptor structure. In receptor-ligand complexes the water molecules are involved in the receptor-ligand interactions by forming water-mediated hydrogen bonds at their contact surface.

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Keywords: GPCR; internal water; molecular dynamics; protein hydration; vasopressin and oxytocin receptors

Document Type: Research Article

Publication date: 2009-04-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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