5GZA:
reference: Structure of protein O-mannose kinase reveals a unique active site architecture., Zhu Q, Venzke D, Walimbe AS, Anderson ME, Fu Q, Kinch LN, Wang W, Chen X, Grishin NV, Huang N, Yu L, Dixon JE, Campbell KP, Xiao J, Elife. 2016 Nov 23;5. pii: e22238. doi: 10.7554/eLife.22238. PMID: 27879205

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