Protein Kinase Regulatory Switches: Decision-Making in the Nucleus

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This project plans to examine new regulatory mechanisms for an important signalling enzyme in the cell nucleus. It aims to define how this enzyme enters the nucleus, to characterise new modifications that affect its actions, and to establish how a conserved nuclear protein may provide an unexpected regulatory platform to send nucleus-initiated signals back to the cell cytoplasm. This reverse signalling is a novel mechanism for integrating nuclear actions that has the potential to create a signal transduction circuit triggered by environmental or genetic factors. This information is crucial in defining the molecular logic of signalling events that may be ultimately targeted to control cell growth, differentiation and survival.