4LKU:
reference: Structure and stability of the C-terminal helical bundle of the E. coli mechanosensitive channel of large conductance., Walton TA, Rees DC, Protein Sci. 2013 Aug 29. doi: 10.1002/pro.2360. PMID: 24038743

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