Johnson's lab at Oxford solved and studied many other protein structures, and she is a depositor on 100 PDB entries including many forms of glycogen phosphorylase and of cell cycle CDK/cyclin complexes As well as carrying out cutting-edge research, she nurtured numerous careers, training a generation of crystallographers in Oxford who themselves now train future leaders across the world. Together with Tom Blundell, she wrote an influential textbook on protein crystallography. She was Director of Life Sciences at Diamond Light Source, 2003–2008, and was a Fellow of Diamond Light Source, 2008–2012. Diamond Light Source is the UK's national synchrotron facility at Harwell, Oxfordshire.