PubMed · 13360584
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P MANDEL. 1956. Glutamic acid in therapy.. https://pubmed.ncbi.nlm.nih.gov/13360584/
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The biosynthesis of the chlorinated amino acid [R-(Z)]-4-amino-3-chloro-2-pentenedioic acid (ACPA) was investigated. Feeding studies with Streptomyces viridogenes were conducted in resting cells. Substantial incorporation from [(15)N]- and [(13)C]-enriched glutamate and proline indicated that the biosynthetic origin of ACPA is one of these amino acids. Experiments with deuterated glutamate and proline imply that chlorination does not occur via a radical mechanism, but rather suggest that a FADH(2)-dependent halogenase is involved.
(2S,3S)-[3-(2)H1]-4-Methyleneglutamic acid 1a and (2S,3R)-[2,3-(2)H2]-4-methyleneglutamic acid 1b have been synthesised for use in biosynthetic and metabolic studies.
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