1SY1:
reference: Role of binding site loops in controlling nitric oxide release: structure and kinetics of mutant forms of nitrophorin 4., Maes EM, Weichsel A, Andersen JF, Shepley D, Montfort WR, Biochemistry 2004 Jun 1;43(21):6679-90. PMID: 15157102

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