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Titolo:
Concerted motions in copper plastocyanin and azurin: an essential dynamicsstudy
Autore:
Arcangeli, C; Bizzarri, AR; Cannistraro, S;
Indirizzi:
Univ Tuscia, Dipartimento Sci Ambientali, INFM, I-01100 Viterbo, Italy Univ Tuscia Viterbo Italy I-01100 bientali, INFM, I-01100 Viterbo, Italy
Titolo Testata:
BIOPHYSICAL CHEMISTRY
fascicolo: 1, volume: 90, anno: 2001,
pagine: 45 - 56
SICI:
0301-4622(20010315)90:1<45:CMICPA>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELECTRON-TRANSFER REACTIONS; RETINOL-BINDING PROTEIN; MOLECULAR-DYNAMICS; CYTOCHROME-C; SIMULATIONS; FLUCTUATIONS; CONVERGENCE; FLEXIBILITY; COMPLEXES; WATER;
Keywords:
electron transfer proteins; molecular dynamics; essential dynamics; concerted motions;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Cannistraro, S Univ Tuscia, Dipartimento Sci Ambientali, INFM, I-01100 Viterbo, Italy Univ Tuscia Viterbo Italy I-01100 I-01100 Viterbo, Italy
Citazione:
C. Arcangeli et al., "Concerted motions in copper plastocyanin and azurin: an essential dynamicsstudy", BIOPHYS CH, 90(1), 2001, pp. 45-56

Abstract

Essential dynamics analysis of molecular dynamics simulation trajectories (1.1 ns) of two copper containing electron transfer proteins, plastocyanin and azurin, has been performed. The protein essential modes have been analysed in order to identify large concerted motions which could be relevant for the electron transfer function exerted by these proteins. The analysis, conducted for temporal windows of different lengths along the protein trajectories, shows a rapid convergence and indicates that for both the proteins the predominant internal motions occur in a subspace of only a few degrees of freedom. Moreover, it is found that for both the proteins the likely binding sites (i.e. the hydrophobic and negative patches) with the reaction partners move in a concerted fashion with a few structural regions far from the active site. Such results are discussed in connection with the possible involvement of large concerted motions in the recognition and binding interaction with physiological electron transfer partners. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 05/12/20 alle ore 02:03:00