3N54:
reference: Crystal Structure of the GerBC Component of a Bacillus subtilis Spore Germinant Receptor., Li Y, Setlow B, Setlow P, Hao B, J Mol Biol. 2010 Jul 21. PMID: 20654628

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