title: Stereoselectivity by enantiomeric inhibitors of matrix metalloproteinase-8: new insights from molecular dynamics simulations.
abstract: Molecular Dynamics simulations in aqueous solution were performed for the matrix metalloproteinase-8 (MMP-8) free catalytic domain and for its complexes with the (R)- and (S)-[1-(4'-methoxybiphenyl-4-sulfonylamino)-2-methylpropyl] phosphonate. The 144-155 loop of the enzyme undergoes a drastic decrease of mobility once complexed with both enantiomers. The two enantiomers induce a different decrease of conformational entropy upon complexation. The higher affinity of the R-enantiomer can be related to the lower loss of conformational entropy accompanying its binding. The differences in the dynamical behavior of the protein induced by the two enantiomers are discussed at molecular level and the mode of binding of the simulated complexes is compared with that previously determined by X-ray crystallography.
authors.affiliation: Dipartimento di Chimica, Ingegneria Chimica e Materiali, Università di L'Aquila, Italia. aschi@caspur.it
authors.forename: Massimiliano
authors.initials: M
authors.lastname: Aschi
authors.forename: Neva
authors.initials: N
authors.lastname: Besker
authors.forename: Nazzareno
authors.initials: N
authors.lastname: Re
authors.forename: Giorgio
authors.initials: G
authors.lastname: Pochetti
authors.forename: Cecilia
authors.initials: C
authors.lastname: Coletti
authors.forename: Carlo
authors.initials: C
authors.lastname: Gallina
authors.forename: Fernando
authors.initials: F
authors.lastname: Mazza
mesh_terms: D001713:Biphenyl Compounds; D020134:Catalytic Domain; D019277:Entropy; D020784:Matrix Metalloproteinase 8 / Q000737:chemistry*; D061965:Matrix Metalloproteinase Inhibitors; D008958:Models, Molecular; D008968:Molecular Conformation; D063065:Organophosphonates / Q000737:chemistry*; D011480:Protease Inhibitors / Q000737:chemistry*; D011485:Protein Binding; D021281:Quantitative Structure-Activity Relationship; D013237:Stereoisomerism; D013449:Sulfonamides / Q000737:chemistry*
chemical_list: C517802:(1-(4'-methoxybiphenyl-4-sulfonylamino)-2-methylpropyl) phosphonate; D001713:Biphenyl Compounds; D061965:Matrix Metalloproteinase Inhibitors; D063065:Organophosphonates; D011480:Protease Inhibitors; D013449:Sulfonamides; D020784:Matrix Metalloproteinase 8