Toward Automatic Rhodopsin Modeling as a Tool for High-Throughput Computational Photobiology

We report on a prototype protocol for the automatic and fast construction of congruous sets of QM/MM models of rhodopsin-like photoreceptors and of their mutants. In the present implementation the information required for the construction of each model is essentially a crystallographic structure or...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of chemical theory and computation 2016-12, Vol.12 (12), p.6020-6034
Hauptverfasser: Melaccio, Federico, del Carmen Marín, María, Valentini, Alessio, Montisci, Fabio, Rinaldi, Silvia, Cherubini, Marco, Yang, Xuchun, Kato, Yoshitaka, Stenrup, Michael, Orozco-Gonzalez, Yoelvis, Ferré, Nicolas, Luk, Hoi Ling, Kandori, Hideki, Olivucci, Massimo
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We report on a prototype protocol for the automatic and fast construction of congruous sets of QM/MM models of rhodopsin-like photoreceptors and of their mutants. In the present implementation the information required for the construction of each model is essentially a crystallographic structure or a comparative model complemented with information on the protonation state of ionizable side chains and distributions of external counterions. Starting with such information, a model formed by a fixed environment system, a flexible cavity system, and a chromophore system is automatically generated. The results of the predicted vertical excitation energy for 27 different rhodopsins including vertebrate, invertebrate, and microbial pigments indicate that such basic models could be employed for predicting trends in spectral changes and/or correlate the spectral changes with structural variations in large sets of proteins.
ISSN:1549-9618
1549-9626
DOI:10.1021/acs.jctc.6b00367