1BAM:
reference: Structure of restriction endonuclease bamhi phased at 1.95 A resolution by MAD analysis., Newman M, Strzelecka T, Dorner LF, Schildkraut I, Aggarwal AK, Structure 1994 May 15;2(5):439-52. PMID: 8081758

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