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  2. Arginine - Wikipedia

    en.wikipedia.org/wiki/Arginine

    Arginine is the amino acid with the formula (H 2 N)(HN)CN(H)(CH 2) 3 CH(NH 2)CO 2 H. The molecule features a guanidino group appended to a standard amino acid framework. At physiological pH, the carboxylic acid is deprotonated (−CO 2 −) and both the amino and guanidino groups are protonated, resulting in a cation.

  3. Essential amino acid - Wikipedia

    en.wikipedia.org/wiki/Essential_amino_acid

    An essential amino acid, or indispensable amino acid, is an amino acid that cannot be synthesized from scratch by the organism fast enough to supply its demand, and must therefore come from the diet. Of the 21 amino acids common to all life forms, the nine amino acids humans cannot synthesize are valine , isoleucine , leucine , methionine ...

  4. Arginylation - Wikipedia

    en.wikipedia.org/wiki/Arginylation

    In arginylation, arginine (pictured above) is added to proteins. Arginylation is a post-translational modification in which proteins are modified by the addition of arginine (Arg) at the N-terminal amino group or side chains of reactive amino acids by the enzyme, arginyltransferase (ATE1). Recent studies have also revealed that hundreds of ...

  5. These 8 Foods Could Help Men With ED - AOL

    www.aol.com/8-foods-could-help-men-105700770.html

    Proteins Like Meat, Dairy, and Nuts. Protein will help you get “swole,” but it’s also a source of L-arginine — a common amino acid that may help your privates get swole too.. L-arginine is ...

  6. Amino acid - Wikipedia

    en.wikipedia.org/wiki/Amino_acid

    Amino acids are organic compounds that contain both amino and carboxylic acid functional groups. [1] Although over 500 amino acids exist in nature, by far the most important are the 22 α-amino acids incorporated into proteins. [2] Only these 22 appear in the genetic code of life. [3] [4]

  7. Protein metabolism - Wikipedia

    en.wikipedia.org/wiki/Protein_metabolism

    Ribosomes translate the codons to their respective amino acids. [1] In humans, non-essential amino acids are synthesized from intermediates in major metabolic pathways such as the Citric Acid Cycle. [2] Essential amino acids must be consumed and are made in other organisms. The amino acids are joined by peptide bonds making a polypeptide chain.