20230811_PaperCusackGroup_1000x600 (IMAGE) European Molecular Biology Laboratory Caption The structure obtained by the Cusack group reveals that two molecules of the RIPK2 kinase domain arranged as an antiparallel dimer (in blue and purple) are required for binding of XIAP BIR2 domain (in orange). Credit Erika Pellegrini/IBS, Isabel Romero Calvo/EMBL Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.