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Beschreibung

The small ubiquitin-related modifier SUMO-1 belongs to the growing family of ubiquitin-related proteins involved in post translational protein modification1. It is present in all eukaryotic kingdoms and is highly conserved from yeast to humans. SUMO-1 does not appear to target proteins for degradation but seems to be involved in the modulation of protein-protein interactions. An increasing number of SUMO-1 substrates are being described but three major substrates for SUMO-1 modification are RanGAP1 and PML proteins.