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  2. Beta turn - Wikipedia

    en.wikipedia.org/wiki/Beta_turn

    Apart from the type I, I’,II and II’ beta turns as identified via the hydrogen bond criterion, non-hydrogen-bonded beta-turns named type VIII often occur. Three other, fairly rare, types of beta turn have been identified in which the peptide bond between residues i+1 and i+2 is cis rather than trans; these are named types VIa1, VIa2 and VIb ...

  3. Turn (biochemistry) - Wikipedia

    en.wikipedia.org/wiki/Turn_(biochemistry)

    According to one definition, a turn is a structural motif where the C α atoms of two residues separated by a few (usually 1 to 5) peptide bonds are close (less than 7 Å [0.70 nm]). [1] The proximity of the terminal C α atoms often correlates with formation of an inter main chain hydrogen bond between the corresponding residues.

  4. What are peptides? Why some people take them and what ... - AOL

    www.aol.com/peptides-understand-why-people-them...

    Creatine peptides promote the release of hormones that influence one's exercise performance, muscle recovery and body composition, which is why some athletes are drawn to the amino acids.

  5. Protein metabolism - Wikipedia

    en.wikipedia.org/wiki/Protein_metabolism

    The formation of a peptide bond requires an input of energy. The two reacting molecules are the alpha amino group of one amino acid and the alpha carboxyl group of the other amino acids. A by-product of this bond formation is the release of water (the amino group donates a proton while the carboxyl group donates a hydroxyl).

  6. Beta-peptide - Wikipedia

    en.wikipedia.org/wiki/Beta-peptide

    β-alanine, an example of a β-amino acid. The amino group attaches not to the α carbon but to the β-carbon, which in this case is a methylene group.. Beta-peptides (β-peptides) are peptides derived from β-amino acids, in which the amino group is attached to the β-carbon (i.e. the carbon two atoms away from the carboxylate group).

  7. Ghrelin - Wikipedia

    en.wikipedia.org/wiki/Ghrelin

    Ghrelin is a participant in regulating the complex process of energy homeostasis which adjusts both energy input – by adjusting hunger signals – and energy output – by adjusting the proportion of energy going to ATP production, fat storage, glycogen storage, and short-term heat loss. The net result of these processes is reflected in body ...

  8. Protein (nutrient) - Wikipedia

    en.wikipedia.org/wiki/Protein_as_nutrient

    Protein is a nutrient needed by the human body for growth and maintenance. Aside from water, proteins are the most abundant kind of molecules in the body. Protein can be found in all cells of the body and is the major structural component of all cells in the body, especially muscle. This also includes body organs, hair and skin.

  9. β-Alanine - Wikipedia

    en.wikipedia.org/wiki/Β-Alanine

    β-Alanine (beta-alanine) is a naturally occurring beta amino acid, which is an amino acid in which the amino group is attached to the β-carbon (i.e. the carbon two carbon atoms away from the carboxylate group) instead of the more usual α-carbon for alanine (α-alanine). The IUPAC name for β-alanine is 3-aminopropanoic acid.