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cysteine

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cysteine
cysteine Biochem. (ˈsɪstiːɪn, ˈsɪstiːaɪn) Also -ein. [ad. G. cysteïn (E. Baumann 1882, in Zeitschr. f. physiol. Chem. VIII. 302), f. cystine + -eine.] An amino-acid, HS·CH2·CH(NH2)·COOH, which is a reduction product of cystine and a constituent of glutathione and many proteins.1884 Jrnl. Chem. Soc. ... Oxford English Dictionary
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Cysteine
Cysteine is chiral, with only L-cysteine being found in nature. When used as a food additive, cysteine has the E number E920. Cysteine is encoded by the codons UGU and UGC. wikipedia.org
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Cysteine methyl ester
Cysteine methyl ester is the organic compound with the formula HSCH2CH(NH2)CO2CH3. A white solid, it is the methyl ester of the amino acid cysteine. wikipedia.org
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Is cysteine deficiency possible? Is there such a thing as cysteine deficiency in humans or other mammals? What effects would such a deficiency have? As I understand it, most cysteine for humans comes from dietary so...
Cysteine can be produced from methionine through a homocysteine intermediate, and defective genes for the enzymes involved can prevent proper cysteine They might need to take cysteine supplements as well.
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Cysteine dioxygenase
Cysteine dioxygenase (CDO) is a non-heme iron enzyme that catalyzes the conversion of L-cysteine to cysteine sulfinic acid (cysteine sulfinate). CDO plays an important role in cysteine catabolism, regulating intracellular levels of cysteine and responding changes in cysteine availability. wikipedia.org
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In biosynthesis of cysteine and methionine, where does the sulfur come from? Methionine and Cysteine are the two amino acids containing sulfur. According to wikipedia, cysteine is built from methionine. However, the w...
Microorganisms (and plants) make cysteine from serine using H2S as the sulphur source. + CoA-SH > > O-acetylserine + H2S >>> cysteine + acetate + H2O As you say, in terms of the sulphur, cysteine and methionine are interconvertible.
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Cysteine desulfurase
In enzymology, a cysteine desulfurase () is an enzyme that catalyzes the chemical reaction L-cysteine + [enzyme]-cysteine L-alanine + [enzyme]-S-sulfanylcysteine The systematic name of this enzyme class is L-cysteine:[enzyme cysteine] sulfurtransferase. wikipedia.org
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Cysteine lyase
The enzyme cysteine lyase (EC 4.4.1.10) catalyzes the chemical reaction L-cysteine + sulfite L-cysteate + hydrogen sulfide This enzyme belongs to the Other names in common use include cysteine (sulfite) lyase, and L-cysteine hydrogen-sulfide-lyase (adding sulfite). wikipedia.org
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In which way would the yeast cell cope with the excess amount of methionine in the growth media? I guess that when there is surplus of methionine in the cell it is incorporated in the TCA cycle as a succinyl CoA, wit...
In humans, cysteine first fills the glutathione pool (which itself is a reservoir for cysteine, apart from reduction equivalents and biotransformation) Excess cysteine can go three ways, 1. oxidation to sulfoalanine and further hypotaurine and taurine, via still unknown enzyme(s) 2. degradation to
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Cysteine transaminase
In enzymology, a cysteine transaminase () is an enzyme that catalyzes the chemical reaction L-cysteine + 2-oxoglutarate mercaptopyruvate + L-glutamate Other names in common use include cysteine aminotransferase, L-cysteine aminotransferase, and CGT. This enzyme participates in cysteine metabolism. wikipedia.org
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S-Carboxymethyl-L-Cysteine（Carbocistein）
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Is human hair used to make bread? While browsing Facebook I came across a post on eDidYouKnow, !Hair in bread Is this something that actually happens on a regular basis or is it just one of possible ways to create L...
However if you are buying shop bought bread then one of the ingredients to extend the shelf life of the bread is L-cysteine. L-cysteine is/can be derived from human hair(mostly from barbers in china apparently), and please note it is not only be bread that L-cysteine is added
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Cysteine engineered antibodies and conjugates - Google Patents
Antibodies are engineered by replacing one or more amino acids of a parent antibody with non cross-linked, highly reactive cysteine amino acids. Antibody fragments may also be engineered with one or more cysteine amino acids to form cysteine engineered antibody fragments (ThioFab). Methods of design, preparation, screening, and selection of the cysteine engineered antibodies are provided.
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Cysteine protease
Cysteine proteases are used as an ingredient in meat tenderizers. Within each superfamily, families are designated by their catalytic nucleophile (C denoting cysteine proteases). {| class="wikitable" |+Families of cysteine wikipedia.org
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The Unique Cysteine of F-ATP Synthase OSCP Subunit ... - PubMed
The mitochondrial permeability transition pore (PTP) is a Ca<sup>2+</sup>-activated channel that plays a key role in cell death. Thiol oxidation facilitates PTP opening, yet the targets and molecular mechanisms still await a definition. Here, we investigate the role of C141 of F-ATP synthase oligomy …
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