Results 31 to 40 of about 26,846 (224)

The Role of the si-Face Tyrosine of a Homodimeric Ferredoxin-NADP+ Oxidoreductase from Bacillus subtilis during Complex Formation and Redox Equivalent Transfer with NADP+/H and Ferredoxin

open access: yesAntioxidants, 2023
In the crystal structure of ferredoxin-NADP+ oxidoreductase from Bacillus subtilis (BsFNR), Tyr50 stacks on the si-face of the isoalloxazine ring portion of the FAD prosthetic group. This configuration is highly conserved among the homodimeric ferredoxin-
Daisuke Seo
doaj   +1 more source

Modeling the Q-cycle mechanism of transmembrane energy conversion [PDF]

open access: yesPhysical Biology v.9, 016011 (2012), 2011
The Q-cycle mechanism plays an important role in the conversion of the redox energy into the energy of the proton electrochemical gradient across the biomembrane. The bifurcated electron transfer reaction, which is built into this mechanism, recycles one electron, thus, allowing to translocate two protons per one electron moving to the high-potential ...
arxiv   +1 more source

Growth- and substrate-dependent transcription of formate dehydrogenase and hydrogenase coding genes in Syntrophobacter fumaroxidans and Methanospirillum hungatei [PDF]

open access: yes, 2011
Transcription of genes coding for formate dehydrogenases (fdh genes) and hydrogenases (hyd genes) in Syntrophobacter fumaroxidans and Methanospirillum hungatei was studied following growth under different conditions.
Cheng, X.   +3 more
core   +3 more sources

The oxygen-independent metabolism of cyclic monoterpenes in Castellaniella defragrans 65Phen [PDF]

open access: yes, 2014
BACKGROUND: The facultatively anaerobic betaproteobacterium Castellaniella defragrans 65Phen utilizes acyclic, monocyclic and bicyclic monoterpenes as sole carbon source under oxic as well as anoxic conditions.
Becher, D.   +7 more
core   +2 more sources

Adrenodoxin—A versatile ferredoxin [PDF]

open access: yesIUBMB Life, 2012
AbstractMammalian adrenodoxin (Adx) has been known for many years as an essential electron mediator in mitochondrial cytochrome P450 systems. Because of its ability to support several cytochrome P450 enzymes, it is involved not only in adrenal steroid hormone biosynthesis but also in vitamin D and bile acid metabolism.
Michael Ringle   +2 more
openaire   +3 more sources

The Electron Transfer in Ferredoxins [PDF]

open access: yesBiophysical Journal, 2015
The 2[4Fe-4S]-ferredoxins are ubiquitous water-soluble electron shuttles found in all bacteria. The intramolecular “self-transfer” electron transfer between the two [4Fe-4S] clusters is an ideal model system for studying electron transfer independent of association of the donor and acceptor and may be considered as the limit of a very tightly bound ...
Toshiko Ichiye, Kelly N. Tran
openaire   +2 more sources

Distinct Physiological Roles of the Three Ferredoxins Encoded in the Hyperthermophilic Archaeon Thermococcus kodakarensis

open access: yesmBio, 2019
Control of electron flux is critical in both natural and bioengineered systems to maximize energy gains. Both small molecules and proteins shuttle high-energy, low-potential electrons liberated during catabolism through diverse metabolic landscapes ...
Brett W. Burkhart   +2 more
doaj   +1 more source

Complex formation between ferredoxin and Synechococcus ferredoxin:nitrate oxidoreductase [PDF]

open access: yes, 2004
The ferredoxin-dependent nitrate reductase from the cyanobacterium Synechococcus sp. PCC 7942 has been shown to form a high-affinity complex with ferredoxin at low ionic strength.
Flores, Enrique   +9 more
core   +1 more source

Oxidation of P700 Induces Alternative Electron Flow in Photosystem I in Wheat Leaves

open access: yesPlants, 2019
Oxygen (O2)-evolving photosynthetic organisms oxidize the reaction center chlorophyll, P700, in photosystem I (PSI) to suppress the production of reactive oxygen species.
Kanae Kadota   +5 more
doaj   +1 more source

The Structural Rule Distinguishing a Superfold: A Case Study of Ferredoxin Fold and the Reverse Ferredoxin Fold

open access: yesMolecules, 2022
Superfolds are folds commonly observed among evolutionarily unrelated multiple superfamilies of proteins. Since discovering superfolds almost two decades ago, structural rules distinguishing superfolds from the other ordinary folds have been explored but
Takumi Nishina   +3 more
doaj   +1 more source

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