Kopcova, Katarina Mikulova, Ludmila Pechova, Ivana Sztachova, Tereza Cizmar, Erik Jancura, Daniel Fabian, Marian
Published in
Biochimica et biophysica acta. Bioenergetics
Cytochrome a was suggested as the key redox center in the proton pumping process of bovine cytochrome c oxidase (CcO). Recent studies showed that both the structure of heme a and its immediate vicinity are sensitive to the ligation and the redox state of the distant catalytic center composed of iron of cytochrome a3 (Fea3) and copper (CuB). Here, t...
Sun, Hu Yang, Ying-Jie Huang, Wei
Published in
Biochimica et biophysica acta. Bioenergetics
Photosynthetic electron flux from water via photosystem II (PSII) and PSI to oxygen (water-water cycle) may act as an alternative electron sink under fluctuating light in angiosperms. We measured the P700 redox kinetics and electrochromic shift signal under fluctuating light in 11 Camellia species and tobacco leaves. Upon dark-to-light transition, ...
Ferraro, Giarita Imbimbo, Paola Marseglia, Angela Lucignano, Rosanna Monti, Daria Maria Merlino, Antonello
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Biochimica et biophysica acta. Bioenergetics
Galdieria phlegrea is a polyextremophilic red alga belonging to Cyanidiophyceae. Galdieria phlegrea C-phycocyanin (GpPC), an abundant light-harvesting pigment with an important role in energy capture and transfer to photosystems, is the C-phycocyanin (C-PC) with the highest thermal stability described so far. GpPC also presents interesting antioxid...
Gerdes, Harrison J Yang, Meiying Heisner, James S Camara, Amadou K S Stowe, David F
Published in
Biochimica et biophysica acta. Bioenergetics
We hypothesized that NO• is generated in isolated cardiac mitochondria as the source for ONOO- production during oxidative stress. We monitored generation of ONOO- from guinea pig isolated cardiac mitochondria subjected to excess Ca2+ uptake before adding succinate and determined if ONOO- production was dependent on a nitric oxide synthase (NOS) lo...
Guarino, Francesca Zinghirino, Federica Mela, Lia Pappalardo, Xena Giada Ichas, François De Pinto, Vito Messina, Angela
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Biochimica et biophysica acta. Bioenergetics
VDAC (Voltage Dependent Anion Channel) is a family of pore forming protein located in the outer mitochondrial membrane. Its channel property ensures metabolites exchange between mitochondria and the rest of the cell resulting in metabolism and bioenergetics regulation, and in cell death and life switch. VDAC1 is the best characterized and most abun...
Oppermann, Sabrina Höfflin, Simon Friedrich, Thorsten
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Biochimica et biophysica acta. Bioenergetics
Energy converting NADH:ubiquinone oxidoreductase, complex I, is the first enzyme of respiratory chains in most eukaryotes and many bacteria. The complex comprises a peripheral arm catalyzing electron transfer and a membrane arm involved in proton-translocation. In Escherichia coli, the peripheral arm features a non-covalently bound flavin mononucle...
Deshmukh, Sasmit S Kálmán, László
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Biochimica et biophysica acta. Bioenergetics
The influence of transition metal binding on the charge storage ability of native bacterial reaction centers (BRCs) was investigated. Binding of manganous ions uniquely prevented the light-induced conformational changes that would yield to long lifetimes of the charge separated state and the drop of the redox potential of the primary electron donor...
Nguyen, Adam A Joseph, Kes Lynn Bussell, Adam N Pokhrel, Suman Karty, Jonathan A Kronfel, Christina M Kehoe, David M Schluchter, Wendy M
Published in
Biochimica et biophysica acta. Bioenergetics
Bilin lyases are enzymes which ligate linear tetrapyrrole chromophores to specific cysteine residues on light harvesting proteins present in cyanobacteria and red algae. The lyases responsible for chromophorylating the light harvesting protein phycoerythrin (PE) have not been fully characterized. In this study, we explore the role of CpeT, a putati...
Dall'Osto, Luca Cazzaniga, Stefano Zappone, Dario Bassi, Roberto
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Biochimica et biophysica acta. Bioenergetics
Proper assembly of plant photosystem II, in the appressed region of thylakoids, allows for both efficient light harvesting and the dissipation of excitation energy absorbed in excess. The core moiety of wild type supercomplex is associated with monomeric antennae that, in turn, bind peripheral trimeric LHCII complexes. Acclimation to light environm...
Johnson, Matthew P Wientjes, Emilie
Published in
Biochimica et biophysica acta. Bioenergetics
The higher plant chloroplast thylakoid membrane system performs the light-dependent reactions of photosynthesis. These provide the ATP and NADPH required for the fixation of CO2 into biomass by the Calvin-Benson cycle and a range of other metabolic reactions in the stroma. Land plants are frequently challenged by fluctuations in their environment, ...
