PMID:18940002

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Citation

Soini, J, Falschlehner, C, Liedert, C, Bernhardt, J, Vuoristo, J and Neubauer, P (2008) Norvaline is accumulated after a down-shift of oxygen in Escherichia coli W3110. Microb. Cell Fact. 7:30

Abstract

Norvaline is an unusual non-proteinogenic branched-chain amino acid which has been of interest especially during the early enzymological studies on regulatory mutants of the branched-chain amino acid pathway in Serratia marcescens. Only recently norvaline and other modified amino acids of the branched-chain amino acid synthesis pathway got attention again when they were found to be incorporated in minor amounts in heterologous proteins with a high leucine or methionine content. Earlier experiments have convincingly shown that norvaline and norleucine are formed from pyruvate being an alternative substrate of alpha-isopropylmalate synthase, however so far norvaline accumulation was not shown to occur in non-recombinant strains of E. coli.

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PubMed PMC2579280 Online version:10.1186/1475-2859-7-30

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