2I66:
reference: Structural basis for the mechanistic understanding of human CD38-controlled multiple catalysis., Liu Q, Kriksunov IA, Graeff R, Munshi C, Lee HC, Hao Q, J Biol Chem. 2006 Oct 27;281(43):32861-9. Epub 2006 Sep 2. PMID: 16951430

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