sulfur amino acids

amino acids that contain sulfur, such as methionine, cysteine, and homocysteine.

Medical dictionary. 2011.

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  • amino acid — Biochem. any of a class of organic compounds that contains at least one amino group, NH2, and one carboxyl group, COOH: the alpha amino acids, RCH(NH2)COOH, are the building blocks from which proteins are constructed. Cf. essential amino acid.… …   Universalium

  • Sulfur — This article is about the chemical element. For other uses, see Sulfur (disambiguation). phosphorus ← sulfur → chlorine …   Wikipedia

  • Amino acid — This article is about the class of chemicals. For the structures and properties of the standard proteinogenic amino acids, see Proteinogenic amino acid. The generic structure of an alpha amino acid in its unionized form …   Wikipedia

  • sulfur — /sul feuhr/, n. 1. Also, esp. Brit., sulphur. Chem. a nonmetallic element that exists in several forms, the ordinary one being a yellow rhombic crystalline solid, and that burns with a blue flame and a suffocating odor: used esp. in making… …   Universalium

  • sulfur cycle — ▪ ecology  circulation of sulfur in various forms through nature. Sulfur occurs in all living matter as a component of certain amino acids (amino acid). It is abundant in the soil in proteins (protein) and, through a series of microbial… …   Universalium

  • Sulfur assimilation — Sulfate reduction and assimilation in plants (APS, adenosine 5 phosphosulfate; Fdred, Fdox, reduced and oxidized ferredoxin; RSH, RSSR, reduced and oxidized glutathione)|right|325pxSulfur is an essential element for growth and physiological… …   Wikipedia

  • Amino acid synthesis — For the non biological synthesis of amino acids see: Strecker amino acid synthesis Amino acid synthesis is the set of biochemical processes (metabolic pathways) by which the various amino acids are produced from other compounds. The substrates… …   Wikipedia

  • sulfur — An element, atomic no. 16, atomic wt. 32.066, that combines with oxygen to form s. dioxide (SO2) and s. trioxide (SO3), and these with water to make strong acids, and with many metals and nonmetallic elements to form sulfides; mildly laxative;… …   Medical dictionary

  • Proteinogenic amino acid — Proteinogenic amino acids are those amino acids that can be found in proteins and require cellular machinery coded for in the genetic code [1] of any organism for their isolated production. There are 22 standard amino acids, but only 21 are found …   Wikipedia

  • Essential amino acid — An essential amino acid or indispensable amino acid is an amino acid that cannot be synthesized de novo by the organism (usually referring to humans), and therefore must be supplied in the diet. Contents 1 Essentiality vs. conditional… …   Wikipedia

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