Purification of SUMO conjugates from Arabidopsis for mass spectrometry analysis

Thérèse C. Rytz, Marcus J. Miller, Richard D. Vierstra

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

6 Scopus citations

Abstract

The posttranslational modification of proteins with small ubiquitin-related modifier (SUMO) is a rapid, robust, and reversible mechanism that impacts a host of eukaryotic processes important to both normal cellular functions and survival during various abiotic and biotic challenges. Essential to defining the breadth of events impacted by SUMOylation is the development of full catalogues of protein targets. Here, we describe a stringent affinity method to purify native SUMO conjugates from the model plant Arabidopsis thaliana based on the expression of modified SUMOs bearing epitope tags. When combined with standard and quantitative mass spectrometric methods, deep datasets of SUMOylated proteins can be acquired. Functional analysis of these lists links SUMO to numerous regulatory events, with an emphasis on those associated with transcription, DNA replication and repair, and chromatin assembly/accessibility.

Original languageEnglish
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages257-281
Number of pages25
DOIs
StatePublished - Sep 1 2016

Publication series

NameMethods in Molecular Biology
Volume1475
ISSN (Print)1064-3745

Keywords

  • Affinity purification
  • Arabidopsis thaliana
  • Mass spectrometry
  • Plants
  • SUMO
  • Small ubiquitin-like modifier

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