NationMaster - Encyclopedia: Leucine

Leucine is one of the 20 most common amino acids and coded for by DNA. It is isomeric with isoleucine. Nutritionally, in humans, leucine is an essential amino acid. There are millions of possible objects that can be described in science, too many to create common names for every one. ... A chemical formula (also called molecular formula) is a concise way of expressing information about the atoms that constitute a particular chemical compound. ... See also Avogadros number Atomic mass unit Dalton (unit) External links Learning by Simulations Calculation of Molecular Formulas from Molecular Masses Categories: Chemistry stubs | Mass | Chemical properties ... The melting point of a solid is the temperature at which it changes state from solid to liquid. ... Density (symbol: Ï - Greek: rho) is a measure of mass per unit of volume. ... The isoelectric point sucks (pI) is the pH at which a molecule carries no net electrical charge. ... In chemistry and biochemistry, acid dissociation constant, the acidity constant, or the acid-ionization constant (Ka) is a specific type of equilibrium constant that indicates the extent of dissociation of hydrogen ions from an acid. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The EINECS number (for European Inventory of Existing Chemical Substances) is a registry number given to each chemical substance commercially available in the European Union between 1 January 1971 and 18 September 1981. ... The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII alpha-numeric strings. ... Image File history File links Chemical structure of Leucine. ... In chemistry, an amino acid is any molecule that contains both amino and carboxylic acid functional groups. ... Space-filling model of a section of DNA molecule Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life (and most viruses). ... In chemistry, isomers are molecules with the same chemical formula and often with the same kinds of bonds between atoms, but in which the atoms are arranged differently. ... Isoleucine is one of the 20 natural amino acids, and is coded for in DNA. Its chemical composition is identical to that of leucine, but the arrangement of its atoms is slightly different, resulting in different properties. ... Nutrition is the study of the relationship between diet and states of health and disease. ... An essential amino acid for an organism is an amino acid that cannot be synthesized by the organism from other available resources, and therefore must be supplied as part of its diet. ...

Leucine is one of the 20 most common amino acids and coded for by DNA. It is isomeric with isoleucine. Nutritionally, in humans, leucine is an essential amino acid. It is the most common amino acid found in proteins. It is essential for optimal growth in infancy and childhood and for nitrogen equilibrium in adults. Wikipedia does not have an article with this exact name. ... Wikipedia does not have an article with this exact name. ...

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ial:Categories&article=Leucine" title="Special:Categories">Categories: Amino acids | Biochemistry stubs Alanine is one of the 20 most common natural amino acids. ... Arginine is one of the 20 most common natural amino acids. ... Asparagine is one of the 20 most common natural amino acids on Earth. ... Aspartic acid, also known as aspartate, the name of its anion, is one of the 20 natural proteinogenic amino acids which are the building blocks of proteins. ... Cysteine is a naturally occurring hydrophobic amino acid which has a sulfhydryl group and is found in most proteins, however only in small quantities. ... Glutamic acid (Glu) or glutamate (the anionic form) is one of the 20 standard amino acids used by all organisms in their proteins. ... Glutamine (molecular weight: 146. ... Glycine (Gly, G) is a nonpolar amino acid. ... Histidine is one of the 20 most common natural amino acids, coded for in DNA. Nutritionally, in humans, histidine is considered an essential amino acid, but mostly only in children. ... Isoleucine is one of the 20 natural amino acids, and is coded for in DNA. Its chemical composition is identical to that of leucine, but the arrangement of its atoms is slightly different, resulting in different properties. ... Lysine is one of the 20 amino acids normally found in proteins. ... Methionine (Met, M. C5H11NO2S) is an essential nonpolar amino acid, and a lipotropic. ... The alpha-amino acid Phenylalanine exists in two forms, the D- and L- forms, which are enantiomers (mirror-image molecules) of each other. ... L-Proline is one of the twenty amino acids (formerly, proline was misleadingly called an imino acid) that are used by living organisms as a building block of proteins (so called proteinogenic amino acids). ... Serine is one of the 20 natural amino acids. ... Threonine is one of the 20 natural amino acids. ... Tryptophan is an amino acid and essential in human nutrition. ... Tyrosine (from the Greek tyros, meaning cheese, as it was first discovered in cheese), 4-hydroxyphenylalanine, or 2-amino-3(4-hydroxyphenyl)-propanoic acid, is one of the 20 amino acids that are used by cells to synthesize proteins. ... Valine is one of the 20 natural amino acids, and is coded for in DNA. Nutritionally, valine is also an essential amino acid. ... An essential amino acid for an organism is an amino acid that cannot be synthesized by the organism from other available resources, and therefore must be supplied as part of its diet. ... A representation of the 3D structure of myoglobin, showing coloured alpha helices. ... Peptides (from the Greek Ï€ÎµÏ€Ï„Î¿Ï‚, digestible), are the family of molecules formed from the linking, in a defined order, of various amino acids. ... RNA codons. ...

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