Results 101 to 110 of about 10,827 (244)

The Cryptic Plastid of Euglena longa Defines a New Type of Nonphotosynthetic Plastid Organelle

open access: yesmSphere, 2020
Most secondary nonphotosynthetic eukaryotes have retained residual plastids whose physiological role is often still unknown. One such example is Euglena longa, a close nonphotosynthetic relative of Euglena gracilis harboring a plastid organelle of ...
Zoltán Füssy   +6 more
doaj   +1 more source

Allosteric communication in Dihydrofolate Reductase: Signaling network and pathways for closed to occluded transition and back [PDF]

open access: yesarXiv, 2007
E. Coli. dihydrofolate reductase (DHFR) undergoes conformational transitions between the closed (CS) and occluded (OS) states which, respectively, describe whether the active site is closed or occluded by the Met20 loop. A sequence-based approach is used to identify a network of residues that represents the allostery wiring diagram.
arxiv  

Computational simulation of the reactive oxygen species and redox network in the regulation of chloroplast metabolism.

open access: yesPLoS Computational Biology, 2020
Cells contain a thiol redox regulatory network to coordinate metabolic and developmental activities with exogenous and endogenous cues. This network controls the redox state and activity of many target proteins.
Melanie Gerken   +3 more
doaj   +1 more source

Surface modified sulfur nanoparticles can escape the glutathione reductase mediated detoxification system in fungi [PDF]

open access: yesarXiv, 2015
The antifungal effects of orthorhombic (~10 nm; spherical) and monoclinic (~50 nm; tetrapod) sulfur nanoparticles (SNPs) were studied against the NADPH-dependent glutathione reductase (GR) mediated xenobiotic detoxification system (GSH-GSSG) in filamentous fungi (Aspergillus niger as a model organism).
arxiv  

The di-flavoenzyme reductase directly activates oxygen for the metabolism of diverse drug molecules by liver microsomal Cytochrome P450s [PDF]

open access: yesarXiv, 2006
This submission has been withdrawn by arXiv administration due to complaints of misuse of institutional affiliation.
arxiv  

Pyridoxine dehydrogenase SePdx regulates photosynthesis via an association with the phycobilisome in a cyanobacterium

open access: yesThe Plant Journal, Volume 121, Issue 6, March 2025.
Significance Statement The identification of SePdx, a bifunctional and green lineage‐specific pyridoxine dehydrogenase from Synechococcus elongatus PCC 7942, reveals its interaction with both the phycobilisome and photosystem I, thereby regulating photosynthesis.
Shoujin Fan   +9 more
wiley   +1 more source

Bio‐inspired Catalyst‐Modified Photocathode for Bias‐Free Photoelectrochemical NADH Regeneration

open access: yesAdvanced Science, Volume 12, Issue 8, February 24, 2025.
Inspired by the structure and function of the thylakoid membrane and electron transport mediator function of Ferredoxin, a catalyst‐immobilized photocathode is constructed by self‐assembly of the aliphatic chain substituted [Rh(Cp*)(bpy)] molecules (Rh‐vi2+) and aliphatic chain decorated polythiophene semiconductors (PTTH), which can be coupled with a ...
Ziqi Zhao   +9 more
wiley   +1 more source

Superoxide reductase from Desulfoarculus baarsii [PDF]

open access: yesMethods in Enzymology, Elsevier, 2001, 349, pp.123-9, 2014
Superoxide radical (O2.-) is the univalent reduction product of molecular oxygen and belongs to the group of the so-called toxic oxygen derivatives. For years the only enzymatic system known to catalyze the elimination of superoxide was the superoxide dismutase (SOD), which catalyzes dismutation of superoxide radical anions to hydrogen peroxide and ...
arxiv  

Glyceraldehyde-3-phosphate dehydrogenase is regulated by ferredoxin-NADP reductase in the diatom Asterionella formosa.

open access: yesNew Phytologist, 2014
Diatoms are a widespread and ecologically important group of heterokont algae that contribute c. 20% to global productivity. Previous work has shown that regulation of their key Calvin cycle enzymes differs from that of the Plantae, and that in crude ...
Malika Mekhalfi   +6 more
semanticscholar   +1 more source

Quantitative determination of ferredoxin, ferredoxin-NADP+ reductase and plastocyanin in spinach chloroplasts.

open access: yesEuropean Journal of Biochemistry, 1978
Ferredoxin, ferredoxin-NADP+ reductase and plastocyanin extracted from spinach chloroplasts were determined by quantitative immunoelectrophoresis in an antiserum-containing gel.
H. Böhme
semanticscholar   +1 more source

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