2N46:
reference: Protein structure determination by combining sparse NMR data with evolutionary couplings., Tang Y, Huang YJ, Hopf TA, Sander C, Marks DS, Montelione GT, Nat Methods. 2015 Jun 29. doi: 10.1038/nmeth.3455. PMID: 26121406

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