5BOI:
reference: Crystal structure of the PepSY-containing domain of the YpeB protein involved in germination of Bacillus spores., Ustok FI, Chirgadze DY, Christie G, Proteins. 2015 Jul 28. doi: 10.1002/prot.24868. PMID: 26219275

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