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Synthesis of nonproteinogenic amino acids to probe lantibiotic biosynthesis.


ABSTRACT: The synthesis of six nonproteinogenic amino acids appropriately protected for Fmoc-based solid-phase peptide synthesis is described. These amino acids are (2S,3R)-vinylthreonine, (2S)-(E)-2-amino-5-fluoro-pent-3-enoic acid (fluoroallylglycine), (S)-beta(2)-homoserine, (S) and (R)-beta(3)-homocysteine, and (2R,3R)-methylcysteine. Once incorporated into peptides, these compounds were envisioned to serve as alternative substrates for the lantibiotic synthases that dehydrate serine and threonine residues in their peptide substrates and catalyze the subsequent intramolecular Michael-type addition of cysteines to the dehydroamino acids.

SUBMITTER: Zhang X 

PROVIDER: S-EPMC2525736 | biostudies-literature | 2005 Aug

REPOSITORIES: biostudies-literature

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Synthesis of nonproteinogenic amino acids to probe lantibiotic biosynthesis.

Zhang Xingang X   Ni Weijuan W   van der Donk Wilfred A WA  

The Journal of organic chemistry 20050801 17


The synthesis of six nonproteinogenic amino acids appropriately protected for Fmoc-based solid-phase peptide synthesis is described. These amino acids are (2S,3R)-vinylthreonine, (2S)-(E)-2-amino-5-fluoro-pent-3-enoic acid (fluoroallylglycine), (S)-beta(2)-homoserine, (S) and (R)-beta(3)-homocysteine, and (2R,3R)-methylcysteine. Once incorporated into peptides, these compounds were envisioned to serve as alternative substrates for the lantibiotic synthases that dehydrate serine and threonine res  ...[more]

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