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With amino acids, for example, in solution a chemical equilibrium will be established between the "parent" molecule and the zwitterion. Betaines are zwitterions that cannot isomerize to an all-neutral form, such as when the positive charge is located on a quaternary ammonium group.
Amino acids have zero mobility in electrophoresis at their isoelectric point, although this behaviour is more usually exploited for peptides and proteins than single amino acids. Zwitterions have minimum solubility at their isoelectric point, and some amino acids (in particular, with nonpolar side chains) can be isolated by precipitation from ...
D-Amino acids are used in racemic crystallography to create centrosymmetric crystals, which, depending on the protein, may allow for easier and more robust protein structure determination. [9] Gramicidin is a polypeptide made up from mixture of D- and L-amino acids. [10] Other compounds containing D-amino acids are tyrocidine and valinomycin.
Zwitterions can be seen as dipolar compounds, unless dipolar not only means "with positive and negative charge", but also that the compound has only two charged centers (don't know if all dipolar compounds have only two charged centers). There are zwitterions with more than two; e.g. we have amino acids with multiple amino's.
Among their near-medicinal properties—thanks to their polyunsaturated fatty acids, protein, and fiber, in particular—according to researchers at Oregon State: Improved heart health and cholesterol
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 can synthesize 11 of the 20 standard amino acids ...
A branched-chain amino acid (BCAA) is an amino acid having an aliphatic side-chain with a branch (a central carbon atom bound to three or more carbon atoms). Among the proteinogenic amino acids, there are three BCAAs: leucine, isoleucine, and valine. [1] Non-proteinogenic BCAAs include 2-aminoisobutyric acid and alloisoleucine. Leucine ...
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