Results 21 to 30 of about 1,002,644 (386)

Bacterial Cysteine-Inducible Cysteine Resistance Systems [PDF]

open access: yesJournal of Bacteriology, 2016
ABSTRACT Cysteine donates sulfur to macromolecules and occurs naturally in many proteins. Because low concentrations of cysteine are cytotoxic, its intracellular concentration is stringently controlled. In bacteria, cysteine biosynthesis is regulated by feedback inhibition of the activities of serine acetyltransferase (SAT) and 3-
Gen Nonaka, Kazuhiro Takumi
openaire   +3 more sources

Oxidants, Antioxidants and Thiol Redox Switches in the Control of Regulated Cell Death Pathways

open access: yesAntioxidants, 2020
It is well appreciated that biological reactive oxygen and nitrogen species such as hydrogen peroxide, superoxide and nitric oxide, as well as endogenous antioxidant systems, are important modulators of cell survival and death in diverse organisms and ...
Moran Benhar
doaj   +1 more source

Synthesis, screening, and sequencing of cysteine-rich one-bead one-compound peptide libraries. [PDF]

open access: yes, 2008
Cysteine-rich peptides are valued as tags for biarsenical fluorophores and as environmentally important reagents for binding toxic heavy metals. Due to the inherent difficulties created by cysteine, the power of one-bead one-compound (OBOC) libraries has
Greaves, John   +3 more
core   +2 more sources

Cysteine and Cysteine-Related Signaling Pathways in Arabidopsis thaliana [PDF]

open access: yesMolecular Plant, 2014
Cysteine occupies a central position in plant metabolism because it is a reduced sulfur donor molecule involved in the synthesis of essential biomolecules and defense compounds. Moreover, cysteine per se and its derivative molecules play roles in the redox signaling of processes occurring in various cellular compartments. Cysteine is synthesized during
Romero González, Luis Carlos   +5 more
openaire   +5 more sources

Impact of glutathione on acute ischemic stroke severity and outcome: possible role of aminothiols redox status

open access: yesRedox Report, 2021
Objective Acute brain ischemia is accompanied by a disruption of low-molecular-weight aminothiols (LMWTs) homeostasis, such as homocysteine (Hcy), cysteine (Cys), and glutathione (GSH).
Marina Yurievna Maksimova   +8 more
doaj   +1 more source

Cell signaling promoting protein carbonylation does not cause sulfhydryl oxidation: implications to the mechanism of redox signaling [PDF]

open access: yes, 2017
Reactive oxygen species (ROS) have been recognized as second messengers, however, targeting mechanisms for ROS in cell signaling have not been defined.
Almansour, Faisal   +4 more
core   +3 more sources

The cysteine proteome

open access: yesFree Radical Biology and Medicine, 2015
The cysteine (Cys) proteome is a major component of the adaptive interface between the genome and the exposome. The thiol moiety of Cys undergoes a range of biologic modifications enabling biological switching of structure and reactivity. These biological modifications include sulfenylation and disulfide formation, formation of higher oxidation states,
Joshua D. Chandler   +2 more
openaire   +3 more sources

Homocystinuria in Children

open access: yesВопросы современной педиатрии, 2018
Homocystinuria is a genetically heterogeneous hereditary disease from the group of aminoacidopathies caused by a metabolic disorder of  sulphur-containing amino acids, primarily methionine.
Alexander A. Baranov   +18 more
doaj   +1 more source

Prebiotic synthesis of cysteine peptides that catalyze peptide ligation in neutral water

open access: yesScience, 2020
Cysteine as peptide precursor and catalyst Among amino acids, cysteine is highly reactive as a nucleophile, metal ligand, and participant in redox and radical reactions. These properties make cysteine attractive as a component of prebiotic chemistry, but
Callum S. Foden   +5 more
semanticscholar   +1 more source

In vitro and in vivo anthelmintic efficacy of plant cysteine proteinases against the rodent gastrointestinal nematode, Trichuris muris [PDF]

open access: yes, 2006
We examined the mechanism of action and compared the anthelmintic efficacy of cysteine proteinases from papaya, pineapple, fig, kiwi fruit and Egyptian milkweed in vitro using the rodent gastrointestinal nematode Heligmosomoides polygyrus.
Behnke, J.M.   +4 more
core   +3 more sources

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