Biochimica et Biophysica Acta (BBA) Bioenergetics This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Editorial Board
Publication date: 1 October 2019Source: Biochimica et Biophysica Acta (BBA) - Bioenergetics, Volume 1860, Issue 10Author(s): (Source: Biochimica et Biophysica Acta (BBA) Bioenergetics)
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 30, 2019 Category: Biochemistry Source Type: research

Publisher's Note
Publication date: 1 October 2019Source: Biochimica et Biophysica Acta (BBA) - Bioenergetics, Volume 1860, Issue 10Author(s): (Source: Biochimica et Biophysica Acta (BBA) Bioenergetics)
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 30, 2019 Category: Biochemistry Source Type: research

Structural diffusion properties of two atypical Dps from the cyanobacterium Nostoc punctiforme disclose interactions with ferredoxins and DNA
We report NpDps-ferredoxin interactions by fluorescence correlation spectroscopy (FCS) and fluorescence resonance energy transfer (FRET) methods. Dynamic light scattering, size exclusion chromatography and native gel electrophoresis results show that NpDps4 forms a dodecamer at both pH 6.0 and pH 8.0, while NpDps5 forms a dodecamer only at pH 6.0. In addition, FCS data clearly reveal that the non-canonical NpDps5 interacts with DNA at pH 6.0. Our spectroscopic analysis shows that [FeS] centers of the three recombinantly expressed and isolated ferredoxins are properly incorporated and are consistent with their respe...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 14, 2019 Category: Biochemistry Source Type: research

Discriminating changes in intracellular NADH/NAD+ levels due to anoxicity and H2 supply in R. eutropha cells using the Frex fluorescence sensor
Publication date: Available online 13 August 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): S. Wilkening, F.-J. Schmitt, O. Lenz, I. Zebger, M. Horch, T. FriedrichAbstractThe hydrogen-oxidizing “Knallgas” bacterium Ralstonia eutropha can thrive in aerobic and anaerobic environments and readily switches between heterotrophic and autotrophic metabolism, making it an attractive host for biotechnological applications including the sustainable H2-driven production of hydrocarbons. The soluble hydrogenase (SH), one out of four different [NiFe]-hydrogenases in R. eutropha, mediates H2 oxidation even...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 14, 2019 Category: Biochemistry Source Type: research

Extensive remodeling of the photosynthetic apparatus alters energy transfer among photosynthetic complexes when cyanobacteria acclimate to far-red light
This article is part of a Special Issue entitled Light harvesting, edited by Dr. Roberta Croce. (Source: Biochimica et Biophysica Acta (BBA) Bioenergetics)
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 14, 2019 Category: Biochemistry Source Type: research

Towards the competent conformation for catalysis in the ferredoxin-NADP+ reductase from the Brucella ovis pathogen
Publication date: Available online 5 August 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Daniel Pérez-Amigot, Víctor Taleb, Sergio Boneta, Ernesto Anoz-Carbonell, María Sebastián, Adrián Velázquez-Campoy, Víctor Polo, Marta Martínez-Júlvez, Milagros MedinaAbstractBrucella ovis encodes a bacterial subclass 1 ferredoxin-NADP(H) reductase (BoFPR) that, by similarity with other FPRs, is expected either to deliver electrons from NADPH to the redox-based metabolism and/or to oxidize NADPH to regulate the soxRS regulon that protects bacteria against oxidative damage. Such potential roles for ...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 7, 2019 Category: Biochemistry Source Type: research

Mechanism of protonation of the over-reduced Mn4CaO5 cluster in photosystem II
Publication date: Available online 5 August 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Keisuke Saito, Hiroshi IshikitaAbstractBased on characterization by X-ray absorption spectroscopy, it has been proposed that the Mn4CaO5 cluster in the crystal structure of the water-oxidizing enzyme, photosystem II (PSII), may represent an over-reduced form arising from reduction by the X-ray beam. Using a quantum mechanical/molecular mechanical approach, and assuming that all of the μ-oxo bridges are deprotonated in S1, we analyzed the reduction process of the Mn4CaO5 cluster. In the crystal structure, t...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 7, 2019 Category: Biochemistry Source Type: research

Fate of oxygen species from O2 activation at dimetal cofactors in an oxidase enzyme revealed by 57Fe nuclear resonance X-ray scattering and quantum chemistry
Publication date: Available online 5 August 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Stefan Mebs, Vivek Srinivas, Ramona Kositzki, Julia J. Griese, Martin Högbom, Michael HaumannAbstractOxygen (O2) activation is a central challenge in chemistry and catalyzed at prototypic dimetal cofactors in biological enzymes with diverse functions. Analysis of intermediates is required to elucidate the reaction paths of reductive O2 cleavage. An oxidase protein from the bacterium Geobacillus kaustophilus, R2lox, was used for aerobic in-vitro reconstitution with only 57Fe(II) or Mn(II) plus 57Fe(II) ions...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 7, 2019 Category: Biochemistry Source Type: research

Functional analysis of coiled-coil domains of MCU in mitochondrial calcium uptake
Publication date: Available online 5 August 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Takenori Yamamoto, Mizune Ozono, Akira Watanabe, Kosuke Maeda, Atsushi Nara, Mei Hashida, Yusuke Ido, Yuka Hiroshima, Akiko Yamada, Hiroshi Terada, Yasuo ShinoharaAbstractThe mitochondrial calcium uniporter (MCU) complex is a highly-selective calcium channel. This complex consists of MCU, mitochondrial calcium uptake proteins (MICUs), MCU regulator 1 (MCUR1), essential MCU regulator element (EMRE), etc. MCU, which is the pore-forming subunit, has 2 highly conserved coiled-coil domains (CC1 and CC2); however...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 7, 2019 Category: Biochemistry Source Type: research

Successes & challenges in the atomistic modeling of light-harvesting and its photoregulation
Publication date: Available online 3 August 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Lorenzo Cupellini, Mattia Bondanza, Michele Nottoli, Benedetta MennucciAbstractLight-harvesting is a crucial step of photosynthesis. Its mechanisms and related energetics have been revealed by a combination of experimental investigations and theoretical modeling. The success of theoretical modeling is largely due to the application of atomistic descriptions combining quantum chemistry, classical models and molecular dynamics techniques. Besides the important achievements obtained so far, a complete and quan...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 4, 2019 Category: Biochemistry Source Type: research

Complexome analysis of the nitrite-dependent methanotroph Methylomirabilis lanthanidiphila
In conclusion, complexome profiling validated the expression and composition of enzymes proposed to be involved in the energy, methane and nitrogen metabolism of M. lanthanidiphila, thereby further corroborating the metabolically unique and environmentally relevant process of nitrite-dependent methane oxidation.Graphical abstract (Source: Biochimica et Biophysica Acta (BBA) Bioenergetics)
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - August 1, 2019 Category: Biochemistry Source Type: research

The H channel is not a proton transfer path in yeast cytochrome c oxidase
Publication date: Available online 30 July 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Aapo Malkamäki, Brigitte Meunier, Marco Reidelbach, Peter R. Rich, Vivek SharmaAbstractCytochrome c oxidases (CcOs) in the respiratory chains of mitochondria and bacteria are primary consumers of molecular oxygen, converting it to water with the concomitant pumping of protons across the membrane to establish a proton electrochemical gradient. Despite a relatively well understood proton pumping mechanism of bacterial CcOs, the role of the H channel in mitochondrial forms of CcO remains debated. Here, we used...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - July 31, 2019 Category: Biochemistry Source Type: research

The human uncoupling proteins 5 and 6 (UCP5/SLC25A14 and UCP6/SLC25A30) transport sulfur oxyanions, phosphate and dicarboxylates
Publication date: Available online 26 July 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Ruggiero Gorgoglione, Vito Porcelli, Antonella Santoro, Lucia Daddabbo, Angelo Vozza, Magnus Monné, Maria Antonietta Di Noia, Luigi Palmieri, Ferdinando Palmieri, Giuseppe FiermonteAbstractThe human genome encodes 53 members of the solute carrier family 25 (SLC25), also called the mitochondrial carrier family. In this work, two members of this family, UCP5 (BMCP1, brain mitochondrial carrier protein 1 encoded by SLC25A14) and UCP6 (KMCP1, kidney mitochondrial carrier protein 1 encoded by SLC25A30) have been...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - July 28, 2019 Category: Biochemistry Source Type: research

Pigment-protein complexes are organized into stable microdomains in cyanobacterial thylakoids
Publication date: Available online 22 July 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): A. Strašková, G. Steinbach, G. Konert, E. Kotabová, J. Komenda, M. Tichý, R. KaňaAbstractThylakoids are the place of the light-photosynthetic reactions. To gain maximal efficiency, these reactions are conditional to proper pigment-pigment and protein-protein interactions. In higher plants thylakoids, the interactions lead to a lateral asymmetry in localization of protein complexes (i.e. granal/stromal thylakoids) that have been defined as a domain-like structures characteristic by different biochemical ...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - July 23, 2019 Category: Biochemistry Source Type: research

Tryptophan 224 of the rat mitochondrial carnitine/acylcarnitine carrier is crucial for the antiport mechanism
Publication date: Available online 21 July 2019Source: Biochimica et Biophysica Acta (BBA) - BioenergeticsAuthor(s): Nicola Giangregorio, Annamaria Tonazzi, Lara Console, Mariella Pistillo, Vito Scalera, Cesare IndiveriAbstractThe mitochondrial carnitine/acylcarnitine carrier (CACT) catalyzes an antiport of carnitine and acylcarnitines and also a uniport reaction with a rate of about one tenth with respect to the antiport rate. The antiport process results from the coupling of the two uniport reactions in opposite directions. In this mechanism, the transition of the carrier from the outward open conformation to the inward ...
Source: Biochimica et Biophysica Acta (BBA) Bioenergetics - July 22, 2019 Category: Biochemistry Source Type: research