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Kinetic Analysis of Plant SUMO Conjugation Machinery
Laura Castaño-Miquel1, L Maria Lois2
1Center for Research in Agricultural Genomics (CSIC-IRTA-UAB-UB), Barcelona, Spain.
Abstract:
Plant SUMO conjugation is an essential posttranslational modification involved in plant development and responses to environmental stress. Most likely, this biological diversification is supported by a functional specialization of the different isoforms of the SUMO conjugation machinery. For instance, the two essential Arabidopsis SUMO isoforms, SUMO1/2, display higher conjugation rate than SUMO3 and 5, which are not essential, linking their specific biochemical properties to their biological role. To study the biochemical properties of plant SUMO conjugation systems, quantitative biochemical assays must be performed. We will present a detailed protocol for reconstituting an in vitro SUMO conjugation assay covering all steps from protein preparation to assay development.
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