Anna Plechanovova from Ron Hay’s Lab successfully passed her PhD Viva yesterday, Wednesday 15th December 2010. Anna’s title was “Structural analysis of RNF4, a ubiquitin E3 ligase with specificity for polymeric chains of SUMO”. She presented her research at 12 noon. Her internal examiner was Tom Owen-Hughes and her external examiner was Titia Sixma, Netherlands Cancer Institute.