John L. Markley, a legacy of service in structural biology.

John L. Markley was an early pioneer of the application of nuclear magnetic resonance (NMR) spectroscopy to investigate the structure, dynamics, and function of biological macromolecules by NMR. A recurring theme of his career is the development of standards and shared resources that have enabled the biological NMR community to coherently and collectively advance the disciplines of structural biology and metabolomics. Spanning development standards for atom nomenclature, founding shared NMR resources at Purdue and UW-Madison, and founding the Biological Magnetic Resonance Data Bank (BMRB) and shepherding BMRB membership in the Worldwide Protein Data Bank, this appreciation revisits the many and lasting contributions by our friend and colleague John Markley in support of the global structural biology community.