Aspartic acid
Chemical name	(S)-Aminobutanedioic acid
Abbreviations	Asp D
Chemical formula	C4H7NO4
Molecular mass	133.10 g mol-1
Melting point	270-271 °C
Density	1.66 g/cm3
Isoelectric point	2.77
pKa	1.95 3.71 9.66
CAS number	[56-84-8]
EINECS number	200-291-6
SMILES	C(C(C(=O)O)N)C(=O)O

Aspartic acid (Asp), 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. IUPAC nomenclature is a systematic way of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC). ... 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: ρ - Greek: rho) is a measure of mass per unit of volume. ... The isoelectric point (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 Aspartic Acid. ... An anion is an ion with negative charge. ... The twenty amino acids that are coded in the standard genetic code are called proteinogenic (protein building). ... In chemistry, an amino acid is any molecule that contains both amino and carboxylic acid functional groups. ... A representation of the 3D structure of myoglobin, showing coloured alpha helices. ...

Asx and B are standard designations signifying the choice: either asparagine (Asn) or aspartic acid.^[1] Asparagine is one of the 20 most common natural amino acids on Earth. ...

As its name indicates, aspartic acid is the carboxylic acid analog of asparagine. It is non-essential in mammals, and might serve as an excitatory neurotransmitter in the brain. It is also a metabolite in the urea cycle, and participates in gluconeogenesis. Structure of a carboxylic acid Carboxylic acids are organic acids characterized by the presence of a carboxyl group, which has the formula -C(=O)-OH, usually written as COOH. The salts and anions of carboxylic acids are called carboxylates generally. ... Orders Subclass Multituberculata (extinct) Plagiaulacida Cimolodonta Subclass Palaeoryctoides (extinct) Subclass Triconodonta (extinct) Subclass Placentalia Afrosoricida Artiodactyla Carnivora Cetacea Chiroptera Cimolesta (extinct) Creodonta (extinct) Condylarthra (extinct) Dermoptera Desmostylia (extinct) Embrithopoda (extinct) Hyracoidea Insectivora Lagomorpha Litopterna (extinct) Macroscelidea Mesonychia (extinct) Notoungulata (extinct) Perissodactyla Pholidota Plesiadapiformes (extinct) Primates Proboscidea Rodentia Scandentia Sirenia Taeniodonta... Neurotransmitters are chemicals that are used to relay, amplify and modulate electrical signals between a neuron and another cell. ... A metabolite is the product of metabolism. ... The Urea Cycle is a cycle of biochemical reactions occurring in many animal organisms that produces urea from ammonia. ... Gluconeogenesis, ultimately, is the generation of glucose from noncarbohydrate sources like lactate, glycerol, and amino acids. ...

As a neurotransmitter, aspartic acid may provide resistance to fatigue and thus lead to endurance, although the evidence to support this idea is not strong.

Notes and references

1. ^  IUPAC-IUBMB Joint Commission on Biochemical Nomenclature. Nomenclature and Symbolism for Amino Acids and Peptides. Recommendations on Organic & Biochemical Nomenclature, Symbols & Terminology etc..  URL accessed on September 28, 2005.

September 28 is the 271st day of the year in the Gregorian calendar (272nd in leap years). ... 2005 (MMV) is a common year starting on Saturday of the Gregorian calendar. ...

See also

• Aspartate transaminase
• the synthetic polyamide sodium poly(aspartate)

Aspartate transaminase (AST) also called Serum Glutamic Oxaloacetic Transaminase (SGOT) or aspartate aminotransferase (ASAT) (EC 2. ... A polyamide is a polymer containing monomers joined by peptide bonds. ... Sodium poly(aspartate) is a condensation polymer based on aspartic acid. ...

External links

• CID 424 from PubChem — racemic
• CID 83887 from PubChem — C([C@H](C(=O)O)N)C(=O)O (D-aspartic acid)
• CID 5960 from PubChem — C([C@@H](C(=O)O)N)C(=O)O (L-aspartic acid)
• CID 450566 from PubChem — C(C(C(=O)O)N)[11C](=O)O
• CID 450604 from PubChem — C(C(C(=O)O)[13NH2])C(=O)O

PubChem is a database of chemical molecules . ... In chemistry, a racemate is a mixture of equal amounts of left- and right-handed stereoisomers of a chiral molecule. ... PubChem is a database of chemical molecules . ... PubChem is a database of chemical molecules . ... PubChem is a database of chemical molecules . ... PubChem is a database of chemical molecules . ...