A bacterial expression system revisited for the recombinant production of cystine-rich plant lipid transfer proteins

Biochem Biophys Res Commun. 2004 Apr 16;316(4):1202-9. doi: 10.1016/j.bbrc.2004.02.173.

Abstract

Non-specific lipid transfer proteins (nsLTPs) are abundant and ubiquitous cystine-rich proteins that are capable, in vitro, of binding lipids and hydrophobic molecules. In view to probe the lipid binding properties of the wheat nsLTP1, mutant variants may represent a powerful tool. To this end, a synthetic gene, encoding a mature wheat nsLTP1 polypeptide, was designed to ensure high level expression in Escherichia coli. The bacterial expression host strain, a translational fusion strategy, and convenient cleavage and purification procedures were optimized to produce in standard fermentation conditions, a significant amount (15 mg/L final yield), of a soluble and correctly folded recombinant nsLTP1. This highly amenable expression system is helpful in order to investigate structure-activity relationships of plant nsLTP.

Publication types

  • Comparative Study
  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antigens, Plant
  • Carrier Proteins / biosynthesis*
  • Carrier Proteins / chemistry
  • Carrier Proteins / genetics*
  • Cystine / chemistry
  • Cystine / genetics
  • Cystine / metabolism
  • Escherichia coli / genetics*
  • Escherichia coli / metabolism*
  • Gene Expression Regulation, Bacterial / genetics
  • Genetic Enhancement / methods*
  • Mutagenesis, Site-Directed
  • Plant Proteins
  • Protein Engineering / methods*
  • Recombinant Proteins / biosynthesis
  • Triticum / genetics*
  • Triticum / metabolism*

Substances

  • Antigens, Plant
  • Carrier Proteins
  • Plant Proteins
  • Recombinant Proteins
  • lipid transfer proteins, plant
  • Cystine