Monday, June 20, 2011

Amino Acid Serum

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Amino Acid

In chemistry, an amino acid is a molecule containing both amine and carboxyl functional groups. In biochemistry, this term refers to alpha-amino acids with the general formula H2NCHRCOOH, where R is an organic subsistent. In the alpha amino acids, the amino and carboxylate groups are attached to the same carbon, which is called the α–carbon. The various alpha amino acids differ in which side chain (R group) is attached to their alpha carbon.

An Essential Amino Acid

An essential amino acid or indispensable amino acid is an amino acid that cannot be synthesized de novo by the organism and therefore must be supplied in the diet.Nine amino acids are generally regarded as essential for humans: phenylalanine, valine, threonine, tryptophan, isoleucine, methionine, histidine, leucine, and lysine. Arginine is required by infants and growing kids. They are called essential not because they are more important to life than the others, but because the body does not synthesize them, making it essential to include them in one's diet in order to obtain them.

Amino acids and DNA

DNA is a sequence of nucleotides. There are four nucleotides: adenine, thymine, cytosine, guanine. The exact sequence of these determines the code of each gene. When DNA is transcribed (the first step in expression of the gene), RNA is synthesized using this code. The RNA is a complementary copy of one strand of the DNA. The RNA leaves the nucleus and in the cytoplasm it is translated into a protein.

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