High-throughput expression, purification, and characterization of recombinant Caenorhabditis elegans proteins

Raymond Y. Huang, Simon J. Boulton, Marc Vidal, Steven C. Almo, Anne R. Bresnick, Mark R. Chance

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Modern proteomics approaches include techniques to examine the expression, localization, modifications, and complex formation of proteins in cells. In order to address issues of protein function in vitro using classical biochemical and biophysical approaches, high-throughput methods of cloning the appropriate reading frames, and expressing and purifying proteins efficiently are an important goal of modern proteomics approaches. This process becomes more difficult as functional proteomics efforts focus on the proteins from higher organisms, since issues of correctly identifying intron-exon boundaries and efficiently expressing and solubilizing the (often) multi-domain proteins from higher eukaryotes are challenging. Recently, 12,000 open-reading-frame (ORF) sequences from Caenorhabditis elegans have become available for functional proteomics studies [Nat. Gen. 34 (2003) 35]. We have implemented a high-throughput screening procedure to express, purify, and analyze by mass spectrometry hexa-histidine-tagged C. elegans ORFs in Escherichia coli using metal affinity ZipTips. We find that over 65% of the expressed proteins are of the correct mass as analyzed by matrix-assisted laser desorption MS. Many of the remaining proteins indicated to be "incorrect" can be explained by high-throughput cloning or genome database annotation errors. This provides a general understanding of the expected error rates in such high-throughput cloning projects. The ZipTip purified proteins can be further analyzed under both native and denaturing conditions for functional proteomics efforts.

Original languageEnglish (US)
Pages (from-to)928-934
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume307
Issue number4
DOIs
StatePublished - Aug 8 2003

Fingerprint

Caenorhabditis elegans Proteins
Recombinant Proteins
Purification
Throughput
Proteomics
Cloning
Proteins
Organism Cloning
Caenorhabditis elegans
Open Reading Frames
Reading Frames
Eukaryota
Histidine
Introns
Exons
Mass Spectrometry
Escherichia coli
Lasers
Mass spectrometry
Metals

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

High-throughput expression, purification, and characterization of recombinant Caenorhabditis elegans proteins. / Huang, Raymond Y.; Boulton, Simon J.; Vidal, Marc; Almo, Steven C.; Bresnick, Anne R.; Chance, Mark R.

In: Biochemical and Biophysical Research Communications, Vol. 307, No. 4, 08.08.2003, p. 928-934.

Research output: Contribution to journalArticle

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