Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/10007
DC FieldValueLanguage
dc.contributor.authorDaskalakis, Vangelis-
dc.contributor.authorVarotsis, Constantinos-
dc.contributor.otherΔασκαλάκης, Ευάγγελος-
dc.contributor.otherΒαρώτσης, Κωνσταντίνος-
dc.date.accessioned2017-03-01T14:54:58Z-
dc.date.available2017-03-01T14:54:58Z-
dc.date.issued2014-04-01-
dc.identifier.citationThe Structural Basis of Biological Energy Generation, 2014, pages 187-198en_US
dc.identifier.isbnPrint 978-94-017-8741-3-
dc.identifier.isbnOnline 978-94-017-8742-0-
dc.identifier.urihttps://hdl.handle.net/20.500.14279/10007-
dc.description.abstractDensity functional theory (DFT) and combined Molecular Mechanics/Quantum Mechanics (MM/QM-MD) calculations have been applied to models of the cytochrome c oxidase (CcO) including the Fe–CuB binuclear center, where dioxygen is bound and subsequently reduced to water. The properties of several intermediates of the CcO dioxygen reaction have been investigated by theoretical approaches. In this chapter, we investigate the dynamics of the binuclear heme Fe–CuB throughout the O2 catalytic cycle. We are focused on the effects of the protein matrix and proton/water motion exerted on the heme a 3 group. For this, we have built models of CcO, which vary at the heme a 3 environment. This variability is based on hydrogen bonding interactions and amino acid protonation states. Different control points have been identified for the transition from one intermediate to the next. The hydrogen bonding networks in the proximity of heme a 3 area also have consequences for the characteristics of the binuclear center. A theoretical framework for the direct link between an H+ delivery channel (termed D) and an accumulation of waters, termed ‘water pool’ close to the active site, has been achieved at the QM/MM level of theory. Two proton valves (E278 and His403) and an electron/proton coupling site (propionate-A/Asp399) exist in this pathway for the aa 3 CcO from P. denitrificans. The ferryl intermediate, produced subsequent to the O–O bond scission, is found to have characteristics highly dependent on the basicity of the proximal His411, in contrast to the hydroxyl intermediate that is sensitive to distal effects.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.rightsSpringer Science+Business Media B.V.en_US
dc.subjectCell Physiologyen_US
dc.subjectProtein Structureen_US
dc.subjectMicrobiologyen_US
dc.subjectBacteriologyen_US
dc.titleProbing the Action of Cytochrome c Oxidaseen_US
dc.typeBook Chapteren_US
dc.doi10.1007/978-94-017-8742-0_10en_US
dc.collaborationCyprus University of Technologyen_US
dc.subject.categoryEarth and Related Environmental Sciencesen_US
dc.countryCyprusen_US
dc.subject.fieldNatural Sciencesen_US
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_3248-
item.openairetypebookPart-
item.grantfulltextnone-
item.languageiso639-1en-
item.cerifentitytypePublications-
crisitem.author.deptDepartment of Chemical Engineering-
crisitem.author.deptDepartment of Chemical Engineering-
crisitem.author.facultyFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.facultyFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.orcid0000-0001-8870-0850-
crisitem.author.orcid0000-0003-2771-8891-
crisitem.author.parentorgFaculty of Geotechnical Sciences and Environmental Management-
crisitem.author.parentorgFaculty of Geotechnical Sciences and Environmental Management-
Appears in Collections:Κεφάλαια βιβλίων/Book chapters
CORE Recommender
Show simple item record

Page view(s) 20

469
Last Week
1
Last month
6
checked on Feb 11, 2025

Google ScholarTM

Check

Altmetric


Items in KTISIS are protected by copyright, with all rights reserved, unless otherwise indicated.