2GA3:
reference: Trapping the tetrahedral intermediate in the alkaline phosphatase reaction by substitution of the active site serine with threonine., Wang J, Kantrowitz ER, Protein Sci. 2006 Oct;15(10):2395-401. PMID: 17008720

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