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*  Sulfur assimilation
... as cysteine and methionine (two amino acids) residues. Cysteine and methionine are highly significant in the structure, ... Both cysteine and methionine are sulfur-containing amino acids and are of great significance in the structure, conformation and ... Cysteine is sulfur donor for the synthesis of methionine, the major other sulfur-containing amino acid present in plants. This ...
*  Protein metabolism
Special cases Cysteine Selenocysteine Glycine Proline Hydrophobic side chains Alanine Valine Isoleucine Leucine Methionine ...
*  Protein primary structure
This formyl group (and sometimes the methionine residue itself, if followed by Gly or Ser) is removed by the enzyme deformylase ... The N-terminal methionine usually found after translation has an N-terminus blocked with a formyl group. ...
*  Low-sulfur diet
Methionine cannot be synthesized by humans, and cysteine synthesis requires a steady supply of sulfur.[citation needed] The ... Amino Acids Using Sulphur Cystine, an important Amino Acid Cystathionine Djenkolic Acid Lanthionine Methionine, a core Amino ... methionine) and semi-essential amino acid (e.g. cysteine). Sulfur is an essential dietary mineral primarily because amino acids ... deficiency is a serious disorder of transsulfuration which is managed with methionine restricted dieting. Reduced dietary ...
*  Methionine
Administration of methionine ameliorated the pathological consequences of methionine deprivation. Methionine might also be ... who must ingest methionine or methionine-containing proteins. In plants and microorganisms, methionine biosynthesis belongs to ... DL-Methionine is sometimes given as a supplement to dogs; It helps to reduce the chances of stones in dogs. Methionine is also ... The methionine-derivative S-adenosyl methionine (SAM) is a cofactor that serves mainly as a methyl donor. SAM is composed of an ...
*  Methionine decarboxylase
In enzymology, a methionine decarboxylase (EC 4.1.1.57) is an enzyme that catalyzes the chemical reaction L-methionine ⇌ {\ ... and L-methionine carboxy-lyase. Hagion H; Nakayama K (1968). "Amino acid metabolism in microorganisms. Part IV. L-Methionine ... The systematic name of this enzyme class is L-methionine carboxy-lyase (3-methylthiopropanamine-forming). Other names in common ... displaystyle \rightleftharpoons } 3-methylthiopropanamine + CO2 Hence, this enzyme has one substrate, L-methionine, and two ...
*  Methionine racemase
D-methionine Hence, this enzyme has one substrate, L-methionine, and one product, D-methionine. This enzyme belongs to the ... In enzymology, a methionine racemase (EC 5.1.1.2) is an enzyme that catalyzes the chemical reaction L-methionine ⇌ {\ ... The systematic name of this enzyme class is methionine racemase. It employs one cofactor, pyridoxal phosphate. McElroy, W.D. ...
*  Methionine sulfoxide
Methionine(protein)+ H2O2→ Methionine Sulfoxide(protein)+ H2O Methionine Sulfoxide(protein)+ NADPH+H+→ Methionine(protein)+ ... Oxidation of methionine results in a mixture of the two diastereomers methionine-S-sulfoxide and methionine-R-sulfoxide, which ... Oxidation of the sulfur of methionine results in methionine sulfoxide or methionine sulfone. The sulfur-containing amino acids ... Methionine sulfoxide (MetO), the oxidized form of the amino acid methionine (Met), increases with age in body tissues, which is ...
*  Methionine synthase
In this way, methionine synthase also serves to maintain low levels of Hcy and, because methionine synthase is one of the few ... Methionine synthase's main purpose is to regenerate Met in the S-Adenosyl Methionine cycle, which in a single turnover consumes ... Methionine synthase also known as MS, MeSe, MetH is responsible for the regeneration of methionine from homocysteine. In humans ... Methionine synthase catalyzes the final step in the regeneration of methionine(Met) from homocysteine(Hcy). The overall ...
*  Methionine transaminase
... (EC 2.6.1.88, methionine-oxo-acid transaminase) is an enzyme with systematic name L-methionine:2-oxo- ... Methionine transaminase at the US National Library of Medicine Medical Subject Headings (MeSH) Molecular and Cellular Biology ... Heilbronn, J.; Wilson, J.; Berger, B.J. (1999). "Tyrosine aminotransferase catalyzes the final step of methionine recycling in ... This enzyme catalyses the following chemical reaction L-methionine + 2-oxo carboxylate ⇌ {\displaystyle \rightleftharpoons } 2- ...
*  S-Adenosyl methionine
"S-Adenosyl-L-Methionine (SAMe): In Depth". NCCIH. January 11, 2017. Bottiglieri, T (November 2002). "S-Adenosyl-L-methionine ( ... It is made from adenosine triphosphate (ATP) and methionine by methionine adenosyltransferase (EC 2.5.1.6). SAM was first ... S-Adenosyl methionine is a common cosubstrate involved in methyl group transfers, transsulfuration, and aminopropylation. ... In bacteria, SAM-e is bound by the SAM riboswitch, which regulates genes involved in methionine or cysteine biosynthesis. In ...
*  Methionine-glyoxylate transaminase
In enzymology, a methionine-glyoxylate transaminase (EC 2.6.1.73) is an enzyme that catalyzes the chemical reaction L- ... The systematic name of this enzyme class is L-methionine:glyoxylate aminotransferase. Other names in common use include ... the two substrates of this enzyme are L-methionine and glyoxylate, whereas its two products are 4-methylthio-2-oxobutanoate and ... methionine + glyoxylate ⇌ {\displaystyle \rightleftharpoons } 4-methylthio-2-oxobutanoate + glycine Thus, ...
*  Methionine gamma-lyase
... methionine lyase, methioninase, methionine dethiomethylase, L-methionine gamma-lyase, and L-methionine methanethiol-lyase ( ... In enzymology, a methionine gamma-lyase (EC 4.4.1.11) is an enzyme that catalyzes the chemical reaction L-methionine + H2O ⇌ {\ ... Methionine gamma-lyase (MGL) is an enzyme in the γ-family of PLP-dependent enzymes. It degrades sulfur-containing amino acids ... Therefore, methionine depletion arises as a relevant therapeutical approach to treat cancer. For that reason, MGL has been ...
*  Methionine-tRNA ligase
In enzymology, a methionine-tRNA ligase (EC 6.1.1.10) is an enzyme that catalyzes the chemical reaction ATP + L-methionine + ... methionine translase, and MetRS. This enzyme participates in 3 metabolic pathways: methionine metabolism, selenoamino acid ... The systematic name of this enzyme class is L-methionine:tRNAMet ligase (AMP-forming). Other names in common use include ... L-methionine, and tRNA(Met), whereas its 3 products are AMP, diphosphate, and L-methionyl-tRNA(Met). This enzyme belongs to the ...
*  Methionine synthase) reductase
... methionine synthase]-cob(II)alamin + NADPH + H+ + 2 S-adenosyl-L-methionine The 3 products of this enzyme are methionine ... In enzymology, a [methionine synthase] reductase (EC 1.16.1.8) is an enzyme that catalyzes the chemical reaction 2 [methionine ... Other names in common use include methionine synthase cob(II)alamin reductase (methylating), methionine synthase reductase, [ ... and S-adenosyl-L-methionine. Over time, the cob(I)alamin cofactor of methionine synthase becomes oxidized to cob(II)alamin ...
*  Methionine S-methyltransferase
Other names in common use include S-adenosyl methionine:methionine methyl transferase, methionine methyltransferase, S- ... S-methyl-L-methionine Thus, the two substrates of this enzyme are S-adenosyl methionine and L-methionine, whereas its two ... Karr D, Tweto J, Albersheim P (1967). "S-adenosyl methionine: methionine methyl transferase from wheat germ". Arch. Biochem. ... The systematic name of this enzyme class is S-adenosyl-L-methionine:L-methionine S-methyltransferase. ...
*  Methionine-S-oxide reductase
... (EC 1.8.4.5, methyl sulfoxide reductase I and II, acetylmethionine sulfoxide reductase, methionine ... Ejiri, S.-I.; Weissbach, H.; Brot, N. (1979). "Reduction of methionine sulfoxide to methionine by Escherichia coli". J. ... Methionine-S-oxide reductase at the US National Library of Medicine Medical Subject Headings (MeSH) Molecular and Cellular ... Black, S.; Harte, E.M.; Hudson, B.; Wartofsky, L. (1960). "A specific enzymatic reduction of L-(-)methionine sulfoxide and a ...
*  Mepron (rumen-protected methionine)
Mepron is the brand name for a time-released, rumen-protected DL-Methionine capsule for dairy cattle. It is a registered ... Dairy-herd milk production may be limited by the amino acid methionine; therefore, the amino acid is included in cattle rations ... Further studies are needed to determine if cows may respond to lysine supply once the methionine requirements are met." Mepron ... According to a 2006 study, results "suggest that RPM [rumen-protected methionine] may be needed to improve milk production in ...
*  D-methionine-pyruvate transaminase
Other names in common use include D-methionine transaminase, and D-methionine aminotransferase. This enzyme participates in d- ... In enzymology, a D-methionine-pyruvate transaminase (EC 2.6.1.41) is an enzyme that catalyzes the chemical reaction D- ... 4-methylmercapto-2-oxobutyric acid: an intermediate in the formation from methionine". Biochem. J. 115 (4): 653-61. PMC 1185190 ... The systematic name of this enzyme class is D-methionine:pyruvate aminotransferase. ...
*  Peptide methionine sulfoxide reductase
... could stand for: Protein-methionine-S-oxide reductase Peptide-methionine (S)-S-oxide ...
*  cytochrome c)-methionine S-methyltransferase
S-methyl-methionine Thus, the two substrates of this enzyme are S-adenosyl methionine and cytochrome c methionine, whereas its ... The systematic name of this enzyme class is S-adenosyl-L-methionine:[cytochrome c]-methionine S-methyltransferase. Farooqui JZ ... is an enzyme that catalyzes the chemical reaction S-adenosyl-L-methionine + [cytochrome c]-methionine ⇌ {\displaystyle \ ... In enzymology, a [cytochrome-c]-methionine S-methyltransferase (EC 2.1.1.123) ...
*  Protein-methionine-S-oxide reductase
... (EC 1.8.4.6, methionine sulfoxide (protein) reductase, methionine sulfoxide peptide ... protein-L-methionine:oxidized-thioredoxin S-oxidoreductase) is an enzyme with systematic name protein-L-methionine:thioredoxin- ... Protein-methionine-S-oxide reductase at the US National Library of Medicine Medical Subject Headings (MeSH) Molecular and ... Brot, N.; Weissbach, L.; Werth, J.; Weissbach, H. (1981). "Enzymatic reduction of protein-bound methionine sulfoxide". Proc. ...
*  L-methionine:oxidized-thioredoxin S-oxidoreductase
... may refer to: Methionine-S-oxide reductase L-methionine (S)-S-oxide ...
*  Peptide-methionine (R)-S-oxide reductase
... methionine S-oxide reductase (ambiguous), selenoprotein R, methionine S-oxide reductase (R-form oxidizing), methionine ... The systematic name of this enzyme class is peptide-methionine:thioredoxin-disulfide S-oxidoreductase [methionine (R)-S-oxide- ... peptide-L-methionine (R)-S-oxide + thioredoxin The 3 substrates of this enzyme are peptide-L-methionine, thioredoxin disulfide ... "Structure of Mycobacterium tuberculosis methionine sulfoxide reductase A in complex with protein-bound methionine". J. ...
*  L-methionine (S)-S-oxide reductase
L-methionine:oxidized-thioredoxin S-oxidoreductase, methionine-S-oxide reductase, and free-methionine (S)-S-oxide reductase. ... Ejiri SI, Weissbach H, Brot N (1979). "Reduction of methionine sulfoxide to methionine by Escherichia coli". J. Bacteriol. 139 ... L-methionine (S)-S-oxide + thioredoxin The 3 substrates of this enzyme are L-methionine, thioredoxin disulfide, and H2O, ... In enzymology, a L-methionine (S)-S-oxide reductase (EC 1.8.4.13) is an enzyme that catalyzes the chemical reaction L- ...