Results 11 to 20 of about 63,840 (215)

Arabidopsis Iron Superoxide Dismutase FSD1 Protects Against Methyl Viologen-Induced Oxidative Stress in a Copper-Dependent Manner

Frontiers in Plant Science, 2022
Iron superoxide dismutase 1 (FSD1) was recently characterized as a plastidial, cytoplasmic, and nuclear enzyme with osmoprotective and antioxidant functions. However, the current knowledge on its role in oxidative stress tolerance is ambiguous.
Pavol Melicher, Petr Dvořák, Yuliya Krasylenko, Alexey Shapiguzov, Alexey Shapiguzov, Alexey Shapiguzov, Jaakko Kangasjärvi, Jozef Šamaj, Tomáš Takáč   +8 more
doaj   +1 more source

Looking for the mechanism of arsenate respiration of Fusibacter sp. strain 3D3, independent of ArrAB

Frontiers in Microbiology, 2022
The literature has reported the isolation of arsenate-dependent growing microorganisms which lack a canonical homolog for respiratory arsenate reductase, ArrAB.
Mauricio Acosta-Grinok, Susana Vázquez, Susana Vázquez, Nicolás Guiliani, Sabrina Marín, Cecilia Demergasso, Cecilia Demergasso   +6 more
doaj   +1 more source

Contribution to the Understanding of Protein–Protein Interface and Ligand Binding Site Based on Hydrophobicity Distribution—Application to Ferredoxin I and II Cases

Applied Sciences, 2021
Ferredoxin I and II are proteins carrying a specific ligand—an iron-sulfur cluster—which allows transport of electrons. These two classes of ferredoxin in their monomeric and dimeric forms are the object of this work.
Mateusz Banach, Jacques Chomilier, Irena Roterman   +2 more
doaj   +1 more source

Mitochondrial De Novo Assembly of Iron–Sulfur Clusters in Mammals: Complex Matters in a Complex That Matters

Inorganics, 2022
Iron–sulfur clusters (Fe–S or ISC) are essential cofactors that function in a wide range of biological pathways. In mammalian cells, Fe–S biosynthesis primarily relies on mitochondria and involves a concerted group of evolutionary-conserved proteins ...
Tyler L. Perfitt, Alain Martelli
doaj   +1 more source

Side chain hydroxylation of C27-steroids and vitamin D3 by a cytochrome P-450 enzyme system isolated from human liver mitochondria

Journal of Lipid Research, 1981
The present study was undertaken to obtain information on the involvement of cytochrome P-450 in the 26-hydroxylation on bile acid intermediates and in the 25-hydroxylation of vitamin D3 in human liver mitochondria.
H Oftebro, K Saarem, I Björkhem, J I Pedersen   +3 more
doaj   +1 more source

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

Antioxidants, 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

Origin and Evolution of Flavin-Based Electron Bifurcating Enzymes

Frontiers in Microbiology, 2018
Twelve evolutionarily unrelated oxidoreductases form enzyme complexes that catalyze the simultaneous coupling of exergonic and endergonic oxidation–reduction reactions to circumvent thermodynamic barriers and minimize free energy loss in a process known ...
Saroj Poudel, Eric C. Dunham, Melody R. Lindsay, Maximiliano J. Amenabar, Elizabeth M. Fones, Daniel R. Colman, Eric S. Boyd   +6 more
doaj   +1 more source

Adrenodoxin—A versatile ferredoxin [PDF]

IUBMB 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.
Kerstin Maria, Ewen, Michael, Ringle, Rita, Bernhardt   +2 more
openaire   +2 more sources

FdC1 and Leaf-Type Ferredoxins Channel Electrons From Photosystem I to Different Downstream Electron Acceptors

Frontiers in Plant Science, 2018
Plant-type ferredoxins in Arabidopsis transfer electrons from the photosystem I to multiple redox-driven enzymes involved in the assimilation of carbon, nitrogen, and sulfur.
Xiaoqian Guan, Shuai Chen, Chia Pao Voon, Kam-Bo Wong, Kam-Bo Wong, Mikko Tikkanen, Boon L. Lim, Boon L. Lim   +7 more
doaj   +1 more source

Chloroplast Lipids Metabolism and Function. A Redox Perspective

Frontiers in Plant Science, 2021
Plant productivity is determined by the conversion of solar energy into biomass through oxygenic photosynthesis, a process performed by protein-cofactor complexes including photosystems (PS) II and I, and ATP synthase.
M. Luisa Hernández, Francisco Javier Cejudo   +1 more
doaj   +1 more source