Kinase_P38 (IMAGE) European Molecular Biology Laboratory Caption Signalling from inflammatory cytokines activates several protein kinases in a chain – at the end of this process MKK6 (yellow) ‘switches on’ p38α (green) by binding it and adding phosphates. The combination of computer simulations, SAXS, and cryo-EM has shown how the two proteins interact and bind to each other to transmit the signal. Credit Ella Marushchenko, 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.