SGD Paper 
Stevens SW (2008) Purification of ribonucleoproteins using peptide-elutable antibodies and other affinity techniques. Methods Mol Biol 488:65-84
Abstract: Recently developed affinity purification methods have revolutionized our understanding of the higher-ordered structures of multisubunit, often low-abundance macromolecular complexes, including ribonucleoproteins (RNPs). Often, purification by classical, non-affinity-based techniques subjects salt-labile complexes to an ionic strength incompatible with the integrity of the RNP, leading to a misrepresentation of the true higher-ordered structure of these complexes. A family of plasmids has been generated that can be used to introduce a number of different epitope tags, including peptide-elutable affinity tags, into the genome of the yeast Saccharomyces cerevisiae. Alternatively, these plasmids may be used for plasmid-borne expression of epitope-tagged proteins in either yeast or Escherichia coli. The gentle elution of the complex from the antibody affinity matrix can be performed at 4 degrees C and is compatible with a range of salt and pH conditions. RNPs purified by this method are active and suitable for downstream analyses such as RNA sequencing, structural analysis, or mass spectrometry peptide identification.
| Status: Published | Type: Journal Article | Research Support, Non-U.S. Gov't | PubMed ID: 18982284 |
Topics addressed in this paper
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