enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Amino acid synthesis - Wikipedia

    en.wikipedia.org/wiki/Amino_acid_synthesis

    Humans can not synthesize all of these amino acids. Amino acid biosynthesis is the set of biochemical processes (metabolic pathways) by which the amino acids are produced. The substrates for these processes are various compounds in the organism's diet or growth media. Not all organisms are able to synthesize all amino acids. For example, humans ...

  3. Essential amino acid - Wikipedia

    en.wikipedia.org/wiki/Essential_amino_acid

    Amino acids that must be obtained from the diet are called essential amino acids. Eukaryotes can synthesize some of the amino acids from other substrates . Consequently, only a subset of the amino acids used in protein synthesis are essential nutrients .

  4. Amino acid - Wikipedia

    en.wikipedia.org/wiki/Amino_acid

    Glucogenic amino acids can also be converted into glucose, through gluconeogenesis. [80] Of the 20 standard amino acids, nine (His, Ile, Leu, Lys, Met, Phe, Thr, Trp and Val) are called essential amino acids because the human body cannot synthesize them from other compounds at the level needed for normal growth, so they must be obtained from food.

  5. Biosynthesis - Wikipedia

    en.wikipedia.org/wiki/Biosynthesis

    The different amino acids are identified by the functional group. As a result of the three different groups attached to the α-carbon, amino acids are asymmetrical molecules. For all standard amino acids, except glycine, the α-carbon is a chiral center. In the case of glycine, the α-carbon has two hydrogen atoms, thus adding symmetry to this ...

  6. Tyrosine - Wikipedia

    en.wikipedia.org/wiki/Tyrosine

    L-Tyrosine or tyrosine (symbol Tyr or Y) [2] or 4-hydroxyphenylalanine is one of the 20 standard amino acids that are used by cells to synthesize proteins. It is a conditionally essential amino acid with a polar side group.

  7. Aspartic acid - Wikipedia

    en.wikipedia.org/wiki/Aspartic_acid

    Aspartic acid has an acidic side chain (CH 2 COOH) which reacts with other amino acids, enzymes and proteins in the body. [5] Under physiological conditions (pH 7.4) in proteins the side chain usually occurs as the negatively charged aspartate form, −COO −. [5] It is a non-essential amino acid in humans, meaning the body can synthesize it as

  8. Protein metabolism - Wikipedia

    en.wikipedia.org/wiki/Protein_metabolism

    Amino acids can have multiple codons that correspond to them. Ribosomes do not directly attach amino acids to mRNA codons. They must utilize tRNAs (transfer RNAs) as well. Transfer RNAs can bind to amino acids and contain an anticodon which can hydrogen bind to an mRNA codon. [13] The process of bind an amino acid to a tRNA is known as tRNA ...

  9. Proteinogenic amino acid - Wikipedia

    en.wikipedia.org/wiki/Proteinogenic_amino_acid

    In eukaryotes, there are only 21 proteinogenic amino acids, the 20 of the standard genetic code, plus selenocysteine. Humans can synthesize 12 of these from each other or from other molecules of intermediary metabolism. The other nine must be consumed (usually as their protein derivatives), and so they are called essential amino acids.