Английская Википедия:Alloisoleucine

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Шаблон:Chembox Alloisoleucine is an amino acid with the formula Шаблон:Chem2. It exists as two enantiomers, of which the L derivative occurs naturally. L-Alloisoleucine occurs in healthy serum in only trace amounts, except for individuals suffering from maple syrup urine disease.[1]

Structure

Together with valine, leucine, and isoleucine, alloisoleucine is classified as a branched chain amino acid (BCAA). It is the rarist of the four.

L-Alloisoleucine is a diastereomer of the proteogenic amino acid L-isoleucine. The stereochemistry of the isobutyl group differs for L-alloisoleucine and L-isoleucine.

Файл:L-Isoleucin - L-Isoleucine.svg Файл:D-isoleucine.svg
Шаблон:Sm-isoleucine (2S,3S) and Шаблон:Sm-isoleucine (2R,3R)
Файл:L-alloisoleucine.svg Файл:D-alloisoleucine.svg
Шаблон:Sm-alloisoleucine (2S,3R) and Шаблон:Sm-alloisoleucine (2R,3S)

Role in biosynthesis

L-allo-isoleucine is a precursor to coronamic acid, which is a constituent of the phytotoxin coronatine, produced by Pseudomonas syringae.[2]

References

Шаблон:Amino acids