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Letter

Nature Genetics 36, 507–511 (1 May 2004) | doi:10.1038/ng1336

SUMO modification is required for in vivo Hox gene regulation by the Caenorhabditis elegans Polycomb group protein SOP-2

Hong Zhang , Gromoslaw A Smolen , Rachel Palmer , Andrea Christoforou , Sander van den Heuvel & Daniel A Haber

Post-translational modification of proteins by the ubiquitin-like molecule SUMO (sumoylation) regulates their subcellular localization and affects their functional properties in vitro, but the physiological function of sumoylation in multicellular organisms is largely unknown. Here, we show that the C.