Results 41 to 50 of about 747,792 (297)

Chemo-selective modification of cysteine residue: synthesis and application in the discovery of potential drug candidates [PDF]

open access: yesExploration of Drug Science
Chemo-select modification of peptides, targeting a handful of the most reactive proteinogenic amino acids (AAs), is gradually utilized to address the medical needs of peptide drugs and biopharmaceuticals.
Yanyan Liao, Xuefeng Jiang
doaj   +1 more source

The versatile utility of cysteine as a target for cancer treatment

open access: yesFrontiers in Oncology, 2023
Owing to its unique nucleophilicity, cysteine is an attractive sulfhydryl-containing proteinogenic amino acid. It is also utilized in various metabolic pathways and redox homeostasis, as it is used for the component of major endogenous antioxidant ...
Jin-Young Min   +2 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

A Disulfide Bond in the Membrane Protein IgaA Is Essential for Repression of the RcsCDB System

open access: yesFrontiers in Microbiology, 2017
IgaA is an integral inner membrane protein that was discovered as repressor of the RcsCDB phosphorelay system in the intracellular pathogen Salmonella enterica serovar Typhimurium.
M. Graciela Pucciarelli   +4 more
doaj   +1 more source

Cysteine Cathepsins and Their Extracellular Roles: Shaping the Microenvironment

open access: yesCells, 2019
For a long time, cysteine cathepsins were considered primarily as proteases crucial for nonspecific bulk proteolysis in the endolysosomal system. However, this view has dramatically changed, and cathepsins are now considered key players in many important
Eva Vidak   +3 more
semanticscholar   +1 more source

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

Comparative Study of a Series of 99mTc(CO)3 Mannosylated Dextran Derivatives for Sentinel Lymph Node Detection

open access: yesMolecules, 2021
Sentinel lymph node detection (SLND) is rapidly entering common practice in the management of patients with tumors. The introduction of mannose molecules to 99mTc-labeled dextrans, so far, showed that the sentinel node could trap these agents due to ...
Afroditi Papasavva   +10 more
doaj   +1 more source

Electrochemical Amino Acid Sensing: A Review on Challenges and Achievements

open access: yesBiosensors, 2021
The rapid growth of research in electrochemistry in the last decade has resulted in a significant advancement in exploiting electrochemical strategies for assessing biological substances.
Kaveh Moulaee, Giovanni Neri
doaj   +1 more source

Common Bean (Phaseolus vulgaris L.) Accumulates Most S-Methylcysteine as Its γ-Glutamyl Dipeptide

open access: yesPlants, 2019
The common bean (Phaseolus vulgaris) constitutes an excellent source of vegetable dietary protein. However, there are sub-optimal levels of the essential amino acids, methionine and cysteine. On the other hand, P.
Elham Saboori-Robat   +6 more
doaj   +1 more source

The Non-Essential Amino Acid Cysteine Becomes Essential for Tumor Proliferation and Survival

open access: yesCancers, 2019
The non-essential amino acid cysteine is used within cells for multiple processes that rely on the chemistry of its thiol group. Under physiological conditions, many non-transformed tissues rely on glutathione, circulating cysteine, and the de novo ...
Joseph A. Combs, G. DeNicola
semanticscholar   +1 more source

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