How To Use Cysteine In A Sentence

Folic acid, a B vitamin, reduces heart-attack risks by lowering a potentially deadly blood chemical called homocysteine.
Folic acid, a B vitamin, reduces heart-attack risks by lowering a potentially deadly blood chemical called homocysteine.
Folic acid, a B vitamin, reduces heart-attack risks by lowering a potentially deadly blood chemical called homocysteine.
Folic acid, a B vitamin, reduces heart-attack risks by lowering a potentially deadly blood chemical called homocysteine.
The integration of reduced sulphur into the amino acid cysteine is a central step in the assimilation of inorganic sulphur.

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Other examples of amino acids are alanine, leucine, cysteine, arginine, and tryptophan.
Among them are baclofen, a common muscle relaxant that enhances GABA, and N-acetylcysteine, used to treat Tylenol overdoses, which inhibits glutamate. New Hope For Addicts?
Metabolism of homocysteine requires an adequate supply of folic acid.
Most overdoses are caught quickly and treated with an antidote called n-acetylcysteine, or NAC. FDA Panel Recommends Changes to Drug Ingredient
It also lowers the levels of amino acid homocysteine which, when found in high levels in the bloodstream, is linked to an increased risk of heart disease.
But we have to demonstrate that homocysteine is causal. The Scientist
Researchers isolated the protein, a cysteine proteinase, from cultured tissue of resistant corn plants and obtained a patent last November for the gene sequence that encodes it.
Studies suggest that raised levels of the amino acid homocysteine are associated with reduced brain performance.
Protecting the Kidney : A 25-cent pill called acetylcysteine is often given to patients undergoing diagnostic X-rays of their coronary arteries to prevent contrast dye used in the procedures from damaging kidneys. Four Heart Treatments Questioned In Studies
The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.
A diet rich in citrus fruits offers protection against cardiovascular disease due to compounds like folate, which is necessary for lowering levels of the cardiovascular risk factorhaemocysteine; potassium, which helps lower blood pressure, protecting against stroke and cardiac arrhythmias; and Vitamin C, carotenoids and flavonoids found in citrus fruits, all of which have been identified as having protective cardiovascular effects. Archive 2008-03-01
Nevertheless, incubation of leaf discs with cysteine increased glutathione contents substantially in untransformed and transformed poplars, particularly in the light, suggesting that cysteine supply remains a key limitation.
The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.
Although all forms of selenium described above are fairly well absorbed by the body, some studies show a slight edge to selenomethionine over selenocysteine, selenocysteine over sodium selenate, and sodium selenate over sodium selenite. The World's Healthiest Foods
The majority of the essential element, sulphur, in living organisms is in the reduced form of organic thiols, such as the amino acids cysteine and methionine.
These findings were largely confirmed for OAS-TL in the plant cysteine synthase complex, where SAT became more affined to its substrates and OAS-TL almost inactivated in the complex, causing OAS to leave the complex.
The most widely-available are selenomethionine and selenocysteine. The World's Healthiest Foods
The effectiveness of some cysteine substitutions at even-numbered positions is also plausible because they are close to the trans pore entrance and apparently not buried in the membrane.
Instead, the seed cysteine concentrations were consistently slightly lower for the transgenic seed flour than for the non-transgenic controls.
Homocysteine is an intermediary metabolite of essential dietary amino acid methionine.
Could memory, he wondered, truly be coded into chains of valine, cysteine and aspartic acid? THE BROKEN GOD
High levels of homocysteine have been associated with atherosclerosis and cerebrovascular disease.
The 2 studies reported that individuals carrying the MTHFR 677TT variant genotype, which is associated with decreased enzyme activity, lower plasma folate levels, and elevated plasma homocysteine levels, had a statistically significant approximately 2- to 5-fold higher risk of pancreatic cancer compared with individuals with the 677CC genotype. Meat diet reduces risk of pancreatic cancer | The Blog of Michael R. Eades, M.D.
The higher homocysteine, the higher your chances of a person contracting dementia.
Its synthesis is dependent on the supply of its constituent amino acids cysteine, glutamate, and glycine.
The LMWCr oligopeptide is composed of cysteine, glutamate, aspartate, and glycine.
In a stylish routine fueled by Queen, the Supremes and Lady Gaga, the members of the DeRosa Lab at Carleton University shimmy and shake their way through the the scientific process of finding a DNA aptamer to attach to the molecule homocysteine. DNA dance: Amazing science lesson of the day
Nygard and his team found that coffee not only raised levels of blood cholesterol, but also significantly increased homocysteine.
The third termination codon, UGA, does signal for termination, but can also be used in a context-dependent manner (depending on RNA structure) to code the amino acid, selenocysteine. Another Protozoan and Front-Loading
During primary sulphate assimilation in chloroplasts, sulphate is reduced via sulphite to the organic sulphide which is used for cysteine biosynthesis.
Once inside a cell, cystine is rapidly reduced to cysteine that, as a precursor of GSH, undergoes GSH synthesis.
Today, we're going to learn about the "Selection of a DNA aptamer for homocysteine using Systematic Evolution of Ligands by Exponential Enrichment. DNA dance: Amazing science lesson of the day
Ubp3 is a deubiquitination enzyme and a member of a large family of cysteine proteases that cleave ubiquitin moieties from protein substrates.
The antidote is a remarkable compound called acetyl cysteine. EzineArticles
The reduced form is a thioether and is derived from cysteine, whereas the oxidized form is a sulphate ester and is derived from the sulphonation pathway.
Both thiocysteine and thiosulfate can be used by the enzyme rhodanese to incorporate sulfur into cyanide, thereby detoxifying the cyanide to thiocyanate.
If you feel you are losing your ability to reason or think clearly, or if you suffer mood disorders such as depression, ask your doctor to do blood tests for homocysteine, folic acid, pyridoxine and vitamin B12. Studies: Exercise Can Make Your Brain Larger | Impact Lab
But soon attention will likely shift to another culprit: homocysteine. The Scientist
Although all forms of selenium described above are fairly well absorbed by the body, some studies show a slight edge to selenomethionine over selenocysteine, selenocysteine over sodium selenate, and sodium selenate over sodium selenite. The World's Healthiest Foods
Women of childbearing years usually do not get enough folic acid, which increases the risk of neurological birth defects and also increases levels of homocysteine, which is damaging to the arteries. American Yoga Association Beginner’s Manual Fully Revised and Updated
Whatever the case, fasting reduces the levels of homocysteine, which is a very good thing. Inflammation and intermittent fasting | The Blog of Michael R. Eades, M.D.
This assumption is supported by studies in which cysteine was supplied to leaf discs of poplar plants.
The main thiol molecules involved in this process are cysteine and glutathione.
A deficiency of any of the following B-vitamins: folio acid, cyanocobalamin or pyridoxine can cause an increase in blood levels of homocysteine.
The antioxidant capacity of plasma was measured with electron spin resonance spectroscopy while homocysteine and fasting plasma lipids were also determined.
When cysteine mutations are performed on the participating residues, spontaneous disulfide bond formation is observed.
It is an amino-acid that can be synthetized from sulphurated amino-acids: methionine and cysteine.
It is a brand name for acetylcysteine, which is used to break up mucus. Times, Sunday Times
The cysTMT Reagents label only free sulfhydryl groups on cysteine residues, in contrast to the amine-reactive TMT® Reagents. BioSpace.com Featured News and Stories
The DndA protein is a likely cysteine desulfur-transferase that is proposed to provide sulphur via its L-cysteine desulfurylase activity (see PLoS ONE Alerts: New Articles
Many recent studies show that homocysteine level is important to survival, particularly if you already have coronary artery disease. The Scientist
The second pathway, present only in the liver and kidney, uses betaine as the methyl donor and is catalyzed by betaine homocysteine methyl-transferase.
Then they conjugated the quantum dots with the amine groups of stigma / stylar cysteine-rich adhesin - a plant pollen tube adhesion protein.
Yorktest hopes to profit from growing awareness of homocysteine - a sulphurous amino acid, which is thought to weaken blood vessels and prepare the way for the furring up caused by some kinds of cholesterol.
Rosenthal PJ, Olson JE, Lee GK, Palmer JT, Klaus JL, et al. (1996) Antimalarial effects of vinyl sulfone cysteine proteinase inhibitors. PLoS ONE Alerts: New Articles
Both of these cancers produce high levels of free radicals that can be suppressed by feeding the mice supplements of antioxidants, either vitamin C or N-acetylcysteine (NAC). How Vitamin C Stops the Big ‘C’ | Impact Lab
As long as the supply of methionine is adequate, cysteine is considered as nonessential.
Moreover, inhibition of the cysteine protease activity by chemical inhibitors suppressed the leaf senescence process.
He added that the findings imply that patients being treated with levodopa should ask their neurologists to monitor the level of homocysteine in their blood, particularly if they are at risk for heart disease.
An avalanche of new studies suggest that an amino acid called homocysteine (pronounced HO-mo-SIS-teen) plays a critical role in destroying our arteries - perhaps as large a role as smoking or cholesterol. The Heart Attackers
In addition a daily supplement of methionine or cysteine or glutathione should be taken. The Beat Fatigue Workbook - how to identify the causes
Radioactive thiols in the eluate were identified by comparison with the fluorescence peaks of mBBr derivatives and by S-cysteine, S-glutathione and S-sulphate standards.
In addition, the drugs which can increase GSH content, such as cysteine prodrugs, will also reduce acetaminophen hepatotoxicity.
Yorktest hopes to profit from growing awareness of homocysteine - a sulphurous amino acid, which is thought to weaken blood vessels and prepare the way for the furring up caused by some kinds of cholesterol.
The researchers found that for each small increase of homocysteine, called a micromolar, the risk of Alzheimer's disease rose 16%. USATODAY.com Weather News
We also show that an active site cysteine is important for catalysis, likely in the protonation of uracil during tRNA reduction. Journal of Biological Chemistry current issue
Folic acid, pyridoxine, and cobalamin are known to reduce homocysteine levels.
Fluimucil, a brand name for the decongestant acetylcysteine, is not a banned substance. The Sun
Also, only the liver, pancreas, kidney, and intestine exhibit full activity of the trans-sulfuration pathway that metabolizes homocysteine to cysteine and taurine.
Aim To investigate whether Antioxidant N-L-acetylcysteine (NAC) can protect the cochlea from impulse noise trauma.
Previous research has suggested that people with elevated levels of an amino acid in their blood known as homocysteine are at increased risk for heart attacks and strokes. Vitamins fail another test
Fructose-fed rats showed significantly impaired glucose tolerance, impaired insulin sensitivity, hypertriglyceridemia, hypercholesterolemia, hyperhomocysteinemia (HHcy), lower total antioxidant capacity (TAC), lower paraoxonase (PON) activity, and higher nitric oxide metabolites (NOx) concentration, when compared to rats fed on control diet. BioMed Central - Latest articles
The raw egg is full of cysteine which helps the body break down the free radicals which build up in the liver and it's best to swallow it in a oner.
When cysteine mutations are performed on the participating residues, spontaneous disulfide bond formation is observed.
Homocysteine is also a strong risk factor for strokes and heart attacks. Canada.com
Selenium can be taken up by plant roots as selenate, selenite or as organoselenium compounds such as the amino acids selenocysteine and selenomethionine.
Selection of a DNA aptamer for homocysteine using SELEX from Maureen McKeague on Vimeo. DNA dance: Amazing science lesson of the day
The thyroid uses glutathione, a combination of three amino acids (glycine, glutamine, and cysteine), protectively as an antioxidant or free radical quencher and as a cofactor that makes it possible for one of its most important enzymes (5'-deiodinase) to work (6). Dr. James P. Blumenthal: Healthy Tips For Protecting Your Body From Radiation And Nuclear Fallout
Folic acid appears to lower the blood levels of homocysteine, an amino acid.
All of is difficult acetylcysteine scientific discovery adriamycin influenza. Rudy: Iraq Is "In The Hands Of Other People"
If the pore in the closed channel is occluded sterically, such a molecule should be unable to reach substituted cysteines below the gate.
Both selenocysteine and selenomethionine can be incorporated into proteins, which may impair their stability and functional activities.
Solid arrowheads mark the boundary between the cysteine-rich and C-terminal domains.
Levels of homocysteine, the amino acid linked to heart disease, are also higher in smokers.
Aim To investigate whether Antioxidant N-L-acetylcysteine (NAC) can protect the cochlea from impulse noise trauma.
Oranges are rich in folate, which reduces levels of homocysteine, a body chemical which is associated with heart disease. The Sun
Homocysteine also causes DNA strand breakage, resulting in mitochondrial membrane damage, nuclear disintegration, and apoptosis of neuronal cells.
Consequently, antioxidants including ginsenosides Rb1 and Rg1, S-allyl cysteine sulphoxide (SACS), simvastatin (SVT) and vitamin E significantly abolished HAART 3-plex-induced inhibition of cholesterol efflux. Naturejobs - All Jobs
Garlic may also contribute to reduced homocysteine levels. Times, Sunday Times
N-acetylcysteine, which is available in pill form at mainstream stores like GNC and Vitamin Shoppe, had improvement of symptoms after 12 weeks, compared with 16% of those taking a placebo. TIME.com: Top Stories
On the other hand, mercury, arachidonic acid (an inflammatory omega-6 fat from dietary sources like meat and dairy), cortisol (the stress hormone), and homocysteine (because of a lack of folate, B6, or B12) all overexcite the NMDA receptor, leading to cell death. The UltraMind Solution
Glutathione conjugation uses Nacetylcysteine, cysteine, and methionine; cystine is used for sulfation; and glucuronidation requires pantothenic acid.
Thus we sought to assess the role of cell permeable inhibitors of cysteine proteases; caspase (zVADfmk) and calpain (zLLYfmk) as supplements in the serum free culture of CD34 PLoS ONE Alerts: New Articles
However, when it is present as a cysteine-cysteine dipeptide, called cystine, it is more stable than cysteine. Food Sources That Boost Glutathione Naturally
These are the proteins cysteine, glycine, glutamic acid and the antioxidant metal selenium.
Specific gene sets associated with the central metabolism of C. aurimucosum apparently provide enhanced metabolic flexibility and adaptability in aerobic, anaerobic and low-pH environments, including gene clusters for the uptake and degradation of aromatic amines, L-histidine and L-tartrate as well as a gene region for the formation of selenocysteine and its incorporation into formate dehydrogenase. BioMed Central - Latest articles
Perhaps bisulfite in the erythrocytes interacts with these cysteine residues and inhibits enzyme activity.
Cysteine represents the site at which sulphur enters amino acid metabolism.
Our bodies digest, absorb, and carry cystine to the cells where they convert it into cysteine.
In 2000, the New England Journal of Medicine published a small study suggesting the generic drug acetylcysteine was especially effective in protecting kidneys against damage from the dye. Four Heart Treatments Questioned In Studies
The researchers found that for each small increase of homocysteine, called a micromolar, the risk of Alzheimer's disease rose 16 percent. BusinessWeek.com -- Top News
Homocysteine is a sulfur-containing amino acid produced in the metabolism of the essential amino acid methionine.
Further, acid hydrolysis would convert cysteine to cystine, and hydrolysis would destroy serine, threonine, cystine, cysteine, and arginine in the alkaline solution generally regarded to have characterized the early ocean. Ten Questions to Ask Your Biology Teacher - The Panda's Thumb
Plasma concentration of homocysteine is a good biomarker for folate deficiency.
Homocysteine is an intermediary metabolite of essential dietary amino acid methionine.
During primary sulphate assimilation in chloroplasts, sulphate is reduced via sulphite to the organic sulphide which is used for cysteine biosynthesis.
The most prevalent amino acid is cysteine with other major ones including tyrosine, histidine, lysine and arginine.
Carbohydrates not only provide the acceptor of sulphide for cysteine biosynthesis, they are the source of reductants for sulphate reduction in non-photosynthetic tissues.
It is unknown whether lowering plasma homocysteine levels with folic acid and cobalamin improves coronary endothelial function in patients.
A severely elevated amount of a chemical called homocysteine is a risk marker and can occur rarely as a hereditary disease. The 10 Best Questions™ for Recovering from a Heart Attack
This nutrient helps prevent high levels of harmful chemical homocysteine, linked to heart disease. The Sun
The gelatinase activity was due to metalloproteinases and not cysteine or serine proteinases.
Most of the sulfate substrate comes from sulfoxidation of the amino acid cysteine.
ROCKFORD, Ill. (June 25, 2010) - Thermo Fisher Scientific, the world leader in serving science, today announced the expansion of its isobaric tandem mass tags product line with the new Thermo Scientific Cysteine-Reactive Tandem Mass Tag (cysTMT) Reagents. BioSpace.com Featured News and Stories
Further, acid hydrolysis would convert cysteine to cystine, and hydrolysis would destroy serine, threonine, cystine, cysteine, and arginine in the alkaline solution generally regarded to have characterized the early ocean. Ten Questions to Ask Your Biology Teacher - The Panda's Thumb
N-acetylcysteine which fights phlegm and, in large doses, is used to fight paracetamol poisoning. ANC Daily News Briefing
The relationship between elevation of plasma homocysteine levels and risk of developing CAD is not well studied.
Several serpins inhibit cysteine proteinases, and a few, such as ovalbumin and angiotensinogen, are non-inhibitory.
George had another gene called MTHFR (viii) that made him require very high doses of folate to lower his blood levels of homocysteine, which is a substance very toxic to the brain. Mark Hyman, MD: 9 Steps to Reverse Dementia and Memory Loss As You Age
Could memory, he wondered, truly be coded into chains of valine, cysteine and aspartic acid? THE BROKEN GOD
N-acetylcysteine replenishes glutathione in HIV infection. Glutathione: The Mother of All Antioxidants
When the cysteine substrate is bound the geometry changes to a trigonal bipyramid, in which the substrate and the glutamic acid occupy the apical positions.
Cysteamine enters the lysosomes by a specific transporter and converts cystine to cysteine and cysteine-cysteamine mixed disulfide.
Whey proteins are also rich in the sulfur-containing amino acids cysteine and methionine.
Cysteine biosynthesis is modified by regulators acting at the site of uptake and throughout the plant system.
The authors explain that this is an indication of an enhanced metabolic flux through cysteine to glutathione in all groups of transgenic plants.
In some individuals, plasma levels of the amino acid homocysteine are abnormally high.
The authors explain that this is an indication of an enhanced metabolic flux through cysteine to glutathione in all groups of transgenic plants.
The European Food Safety Authority (EFSA) has said there is insufficient data to back the safety of the selemium form, Se-methyl-L-selenocysteine (Semethylselenocysteine), in food supplements. NutraIngredients RSS
The expression of this gene is associated with concomitant changes in cysteine protease activity of the petals.
It has been proposed that the photoexcited flavin molecule adds a cysteine residue of the protein backbone, thus activating autophosphorylation of the enzyme.
Its eight cysteine residues form four disulfide bridges that prevent spontaneous self-assembly in solution and thus account for the controlled assembly at hydrophilic-hydrophobic interfaces.
The cynide is mainly detoxicated by conversion to thiocynate, in the process of which it reacts with cysteine and cystine.
The awkward way in which selenocysteine is kluged into the genetic code (which is not unique to Tetrahymena; we do it too), sharing a termination codon instead of having one to itself seems like a good example of a molecular "panda's thumb," reflecting the inherent difficulty of a late addition to the frozen accident of the genetic code. Another Protozoan and Front-Loading
During primary sulphate assimilation in chloroplasts, sulphate is reduced via sulphite to the organic sulphide which is used for cysteine biosynthesis.
Folate helps break down homocysteine, which can lead to brain atrophy in high levels. Times, Sunday Times
We predict that this evolutionary change in animals would likely require a change in the conformation of the backbone to properly position the cysteine to coordinate the zinc ion.
The sulfur-containing amino acids are methionine, cysteine, cystine, homocysteine, homocystine, and taurine.
However, when it is present as a cysteine-cysteine dipeptide, called cystine, it is more stable than cysteine. Food Sources That Boost Glutathione Naturally
Cysteine in the extracellular space is mostly oxidized to cystine.
The oxidation sites of alpha-crystallin are considered to be methionine, cysteine and tryptophan amino acid residues.
Maturation induced by xanthine oxidase was prevented by allopurinol, an inhibitor of xanthine oxidase activity, and by N-acetylcysteine.
Nilsson et al found increased plasma homocysteine along with decreased serum folate, B12, and creatinine levels in 69 percent of demented and non-demented psychogeriatric patients.
During primary sulphate assimilation in chloroplasts, sulphate is reduced via sulphite to the organic sulphide which is used for cysteine biosynthesis.
Homocysteine could be a marker for another biochemical that is the true culprit. The Scientist
The morphological and biochemical changes typical of apoptosis are orchestrated by caspases, a family of cysteine proteinases, which cleave proteins after aspartate residue.
However, another study — one of many that could be cited — Effect of N-acetyl-cysteine on the hypoxic ventilatory response and erythropoietin production: linkage between plasma thiol redox state and O2 chemosensitivity, found that very modest doses of NAC, 200 mg three times daily, massively increased erythropoeitin production and increased the hypoxic ventilatory response. An Undetectable Athletic Performance Enhancer? « Isegoria
Briefly, the washed hair was digested in an alkaline solution, complexed by cysteine, urea, and cupric ion, then acidified with sulfuric acid.
(A) DndA protein data that have been used to predict its putative biological function as a likely cysteine desulfur-transferase in PLoS ONE Alerts: New Articles
Click to see a dance routine to “Selection of a DNA aptamer for homocysteine using systematic evolution of ligands by exponential enrichment.” Pie shakes, car-free days: D.C. area blogs
The role of two cysteine proteases; caspase and calpain has been highly implicated in programmed cell death in many cell systems PLoS ONE Alerts: New Articles
They are basic, cysteine-rich, amphiphilic proteins, and some of them have antimicrobial activities.
14 Chiang et al, "In vitro antiviral activities of Caesalpinia pulcherrima and its related flavonoids," Journal of Antimicrobial Chemotherapy 52: 194-198 (2003) 15 Ferraresi et al, "Essential requirement of reduced glutathione (GSH) for the anti-oxidant effect of the flavonoid quercetin," Free Radical Research 39 (11): 1249-1258 (2005) 16 Myhrstad et al, "Flavonoids increase the intracellular glutathione level by transactivation of the gamma-glutamylcysteine synthetase catalytical subunit promoter," Free Radical Biology To The Point News Syndicated
The breakthrough centres on a compound called homocysteine which is naturally made in the body and, at high levels, has been linked to memory loss and Alzheimer's. Home | Mail Online
In several animal studies measuring the distribution of supplemental selenium, tissue storage of selenium was shown to be higher with selenomethionine compared to selenocysteine, selenate, and selenite.
Instead, they possess a linked thioredoxin-glutathione system with a selenocysteine-containing enzyme thioredoxin glutathione reductase (TGR) as the single redox hub that controls the overall redox homeostasis. BioMed Central - Latest articles
Homocysteine is either metabolized to the amino acids cysteine and taurine (trans-sulfuration) or recycled to methionine by taking on a methyl group (methylation).
Cysteine, tyrosine, asparagine and histidine are also attractive in this connection, because each of them is encoded by only two possible codons.
Precursor proteins that contain one or two cysteine residues readily formed intermolecular disulphide bonds upon binding to the receptor complex, resulting in dimeric and tetrameric precursor proteins. Naturejobs - All Jobs
Both mass spectrometry data of tryptic digests and in vitro labeling of cysteine residues with 4-acetamido-4 'maleimidyl-stilbene-2, BioMed Central - Latest articles
So it will need to be consistent not with merely the ribosome and the bacterial flagella, but also the octopus's eye, the panda's thumb, and the jerry-rigged way that selenocysteine is kluged into the genetic code. Analogy, How Scientifically Powerful is It?
Homocysteine lies at a critical juncture between the trans-sulfuration pathway that leads to cysteine and glutathione (GSH) biosynthesis, and the branch that leads to S-adenosylmethionine (SAM) biosynthesis. PLoS ONE Alerts: New Articles
The key component is allicin, which can help to control levels of homocysteine. Times, Sunday Times
Vitamins B6, B12, and folate also called folic acid have a strongly positive influence on methylation, which can suppress the production of cortisol.8 Methylation also reduces the harmful amino acid homocysteine.9 Vitamin B6 also aids in the production of both GABA and serotonin, the two brain chemicals most likely to calm the fires of anxiety.10 The Chemistry of Calm

How To Use Cysteine In A Sentence

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