1I8V:
reference: Tyrosine hydrogen bonds make a large contribution to protein stability., Pace CN, Horn G, Hebert EJ, Bechert J, Shaw K, Urbanikova L, Scholtz JM, Sevcik J, J Mol Biol 2001 Sep14;312(2):393-404. PMID: 11554795

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).