2AWJ:
reference: Defining the role of arginine 96 in green fluorescent protein fluorophore biosynthesis., Wood TI, Barondeau DP, Hitomi C, Kassmann CJ, Tainer JA, Getzoff ED, Biochemistry. 2005 Dec 13;44(49):16211-20. PMID: 16331981

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