Results 31 to 40 of about 827,600 (338)

Functional characterization and structure-guided mutational analysis of the transsulfuration enzyme cystathionine γ-lyase from toxoplasma gondii [PDF]

open access: yes, 2018
Sulfur-containing amino acids play essential roles in many organisms. The protozoan parasite Toxoplasma gondii includes the genes for cystathionine β-synthase and cystathionine γ-lyase (TgCGL), as well as for cysteine synthase, which are crucial enzymes ...
Astegno, A.   +6 more
core   +2 more sources

Transfer of Sulfur from IscS to IscU during Fe/S Cluster Assembly [PDF]

open access: yes, 2001
The cysteine desulfurase enzymes NifS and IscS provide sulfur for the biosynthesis of Fe/S proteins. NifU and IscU have been proposed to serve as template or scaffold proteins in the initial Fe/S cluster assembly events, but the mechanism of sulfur ...
Hoff, Kevin G.   +3 more
core   +1 more source

Multi-objective optimization of methionine+cysteine levels in diets for growing pigs

open access: yesRevista Colombiana de Ciencias Pecuarias, 2020
Background: The addition of synthetic methionine to growing pig diets should consider the requirements of the methionine+cysteine complex, as most cysteine is obtained through dietary methionine.
José L. Figueroa-Velasco   +5 more
doaj   +1 more source

KEAP1, a cysteine-based sensor and a drug target for the prevention and treatment of chronic disease [PDF]

open access: yesOpen Biology, 2020
Redox imbalance and persistent inflammation are the underlying causes of most chronic diseases. Mammalian cells have evolved elaborate mechanisms for restoring redox homeostasis and resolving acute inflammatory responses.
Sharadha Dayalan Naidu   +1 more
doaj   +1 more source

Fragmentation of protonated ions of peptides containing cysteine, cysteine sulfinic acid, and cysteine sulfonic acid [PDF]

open access: yesJournal of the American Society for Mass Spectrometry, 2004
The oxidation of the sulfhydryl group in cysteine to sulfenic acid, sulfinic acid, and sulfonic acid in proteins is important in a number of enzymatic processes. In this study we examined the fragmentation of four peptides containing cysteine, cysteine sulfinic acid (Cys-SO(2)H), and cysteine sulfonic acid (Cys-SO(3)H) in an ion-trap mass spectrometer.
Qibin Zhang   +3 more
openaire   +3 more sources

A dedicated haem lyase is required for the maturation of a novel bacterial cytochrome c with unconventional covalent haem binding [PDF]

open access: yes, 2007
In bacterial c-type cytochromes, the haem cofactor is covalently attached via two cysteine residues organized in a haem c-binding motif. Here, a novel octa-haem c protein, MccA, is described that contains only seven conventional haem c-binding motifs ...
Allen J.W.A.   +17 more
core   +1 more source

Statistic evaluation of cysteine and allyl alcohol as additives for Cu-Zn coatings from citrate baths

open access: yesMaterials Research, 2012
In the present work, cysteine and allyl alcohol were added to citrate baths as additives to Cu-Zn coatings on steel substrates. In order to verify the effects of the deposition parameters (current density, mechanical stirring speed, and additives) on the
Julyana Ribeiro Garcia   +5 more
doaj   +1 more source

Anthelmintic action of plant cysteine proteinases against the rodent stomach nematode, Protospirura muricola, in vitro and in vivo [PDF]

open access: yes, 2007
Cysteine proteinases from the fruit and latex of plants, including papaya, pineapple and fig, were previously shown to have a rapid detrimental effect, in vitro, against the rodent gastrointestinal nematodes, H eligmosomoides polygyrus (which is found in
Behnke, J.M.   +4 more
core   +3 more sources

Succination of Protein Thiols in Human Brain Aging

open access: yesFrontiers in Aging Neuroscience, 2020
Human brain evolution toward complexity has been achieved with increasing energy supply as the main adaptation in brain metabolism. Energy metabolism, like other biochemical reactions in aerobic cells, is under enzymatic control and strictly regulated ...
Mariona Jové   +7 more
doaj   +1 more source

Developments in plant breeding for improved nutritional quality of soya beans I. Protein and amino acid content [PDF]

open access: yes, 2000
Soya beans, like other legumes, contain low concentrations of the nutritionally essential sulphur amino acid, methionine. Cysteine, although not an essential amino acid because it can be synthesized from methionine, also influences the nutritional ...
Clarke, E, Wiseman, J
core   +1 more source

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