FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2043947026> ?p ?o ?g. }

• W2043947026 endingPage "14783" @default.
• W2043947026 startingPage "14772" @default.
• W2043947026 abstract "In photosystem II (PSII), the redox properties of the non-heme iron complex (Fe complex) are sensitive to the redox state of quinones (QA/B), which may relate to the electron/proton transfer. We calculated the redox potentials for one-electron oxidation of the Fe complex in PSII [Em(Fe)] based on the reference value Em(Fe) = +400 mV at pH 7 in the QA0QB0 state, considering the protein environment in atomic detail and the associated changes in protonation pattern. Our model yields the pH dependence of Em(Fe) with −60 mV/pH as observed in experimental redox titration. We observed significant deprotonation at D1-Glu244 in the hydrophilic loop region upon Fe complex oxidation. The calculated pKa value for D1-Glu244 depends on the Fe complex redox state, yielding a pKa of 7.5 and 5.5 for Fe2+ and Fe3+, respectively. To account for the pH dependence of Em(Fe), a model involving not only D1-Glu244 but also the other titratable residues (five Glu in the D-de loops and six basic residues near the Fe complex) seems to be needed, implying the existence of a network of residues serving as an internal proton reservoir. Reduction of QA/B yields +302 mV and +268 mV for Em(Fe) in the QA-QB0 and QA0QB- states, respectively. Upon formation of the QA0QB- state, D1-His252 becomes protonated. Forming Fe3+QBH2 by a proton-coupled electron transfer process from the initial state Fe2+QB- results in deprotonation of D1-His252. The two EPR signals observed at g = 1.82 and g = 1.9 in the Fe2+QA- state of PSII may be attributed to D1-His252 with variable and fixed protonation, respectively." @default.
• W2043947026 created "2016-06-24" @default.
• W2043947026 creator A5024132636 @default.
• W2043947026 creator A5079397709 @default.
• W2043947026 date "2005-10-21" @default.
• W2043947026 modified "2023-09-26" @default.
• W2043947026 title "Oxidation of the Non-Heme Iron Complex in Photosystem II" @default.
• W2043947026 cites W1972502990 @default.
• W2043947026 cites W1976161355 @default.
• W2043947026 cites W1979044106 @default.
• W2043947026 cites W1988506563 @default.
• W2043947026 cites W1992686010 @default.
• W2043947026 cites W1993827262 @default.
• W2043947026 cites W2015436340 @default.
• W2043947026 cites W2017391050 @default.
• W2043947026 cites W2018959727 @default.
• W2043947026 cites W2026673235 @default.
• W2043947026 cites W2028774616 @default.
• W2043947026 cites W2088160637 @default.
• W2043947026 cites W2094915486 @default.
• W2043947026 cites W2118479650 @default.
• W2043947026 cites W2131194554 @default.
• W2043947026 cites W2162166182 @default.
• W2043947026 cites W2167480041 @default.
• W2043947026 doi "https://doi.org/10.1021/bi051099v" @default.
• W2043947026 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16274225" @default.
• W2043947026 hasPublicationYear "2005" @default.
• W2043947026 type Work @default.
• W2043947026 sameAs 2043947026 @default.
• W2043947026 citedByCount "29" @default.
• W2043947026 countsByYear W20439470262012 @default.
• W2043947026 countsByYear W20439470262013 @default.
• W2043947026 countsByYear W20439470262014 @default.
• W2043947026 countsByYear W20439470262017 @default.
• W2043947026 countsByYear W20439470262020 @default.
• W2043947026 countsByYear W20439470262021 @default.
• W2043947026 countsByYear W20439470262022 @default.
• W2043947026 countsByYear W20439470262023 @default.
• W2043947026 crossrefType "journal-article" @default.
• W2043947026 hasAuthorship W2043947026A5024132636 @default.
• W2043947026 hasAuthorship W2043947026A5079397709 @default.
• W2043947026 hasConcept C110010208 @default.
• W2043947026 hasConcept C118629725 @default.
• W2043947026 hasConcept C121332964 @default.
• W2043947026 hasConcept C123669783 @default.
• W2043947026 hasConcept C145148216 @default.
• W2043947026 hasConcept C178790620 @default.
• W2043947026 hasConcept C179104552 @default.
• W2043947026 hasConcept C183688256 @default.
• W2043947026 hasConcept C184866935 @default.
• W2043947026 hasConcept C185592680 @default.
• W2043947026 hasConcept C187961010 @default.
• W2043947026 hasConcept C24840226 @default.
• W2043947026 hasConcept C2778591166 @default.
• W2043947026 hasConcept C30095370 @default.
• W2043947026 hasConcept C36786875 @default.
• W2043947026 hasConcept C46141821 @default.
• W2043947026 hasConcept C544153396 @default.
• W2043947026 hasConcept C54516573 @default.
• W2043947026 hasConcept C55493867 @default.
• W2043947026 hasConcept C55904794 @default.
• W2043947026 hasConcept C56990077 @default.
• W2043947026 hasConcept C62520636 @default.
• W2043947026 hasConcept C75473681 @default.
• W2043947026 hasConcept C8010536 @default.
• W2043947026 hasConcept C80298142 @default.
• W2043947026 hasConceptScore W2043947026C110010208 @default.
• W2043947026 hasConceptScore W2043947026C118629725 @default.
• W2043947026 hasConceptScore W2043947026C121332964 @default.
• W2043947026 hasConceptScore W2043947026C123669783 @default.
• W2043947026 hasConceptScore W2043947026C145148216 @default.
• W2043947026 hasConceptScore W2043947026C178790620 @default.
• W2043947026 hasConceptScore W2043947026C179104552 @default.
• W2043947026 hasConceptScore W2043947026C183688256 @default.
• W2043947026 hasConceptScore W2043947026C184866935 @default.
• W2043947026 hasConceptScore W2043947026C185592680 @default.
• W2043947026 hasConceptScore W2043947026C187961010 @default.
• W2043947026 hasConceptScore W2043947026C24840226 @default.
• W2043947026 hasConceptScore W2043947026C2778591166 @default.
• W2043947026 hasConceptScore W2043947026C30095370 @default.
• W2043947026 hasConceptScore W2043947026C36786875 @default.
• W2043947026 hasConceptScore W2043947026C46141821 @default.
• W2043947026 hasConceptScore W2043947026C544153396 @default.
• W2043947026 hasConceptScore W2043947026C54516573 @default.
• W2043947026 hasConceptScore W2043947026C55493867 @default.
• W2043947026 hasConceptScore W2043947026C55904794 @default.
• W2043947026 hasConceptScore W2043947026C56990077 @default.
• W2043947026 hasConceptScore W2043947026C62520636 @default.
• W2043947026 hasConceptScore W2043947026C75473681 @default.
• W2043947026 hasConceptScore W2043947026C8010536 @default.
• W2043947026 hasConceptScore W2043947026C80298142 @default.
• W2043947026 hasIssue "45" @default.
• W2043947026 hasLocation W20439470261 @default.
• W2043947026 hasLocation W20439470262 @default.
• W2043947026 hasOpenAccess W2043947026 @default.
• W2043947026 hasPrimaryLocation W20439470261 @default.
• W2043947026 hasRelatedWork W1983918204 @default.
• W2043947026 hasRelatedWork W1991797448 @default.

• next