1CJT:
reference: Two-metal-Ion catalysis in adenylyl cyclase., Tesmer JJ, Sunahara RK, Johnson RA, Gosselin G, Gilman AG, Sprang SR, Science 1999 Jul 30;285(5428):756-60. PMID: 10427002

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