4N31:
reference: Structure and activity of Streptococcus pyogenes SipA: a signal peptidase-like protein essential for pilus polymerisation., Young PG, Proft T, Harris PW, Brimble MA, Baker EN, PLoS One. 2014 Jun 9;9(6):e99135. doi: 10.1371/journal.pone.0099135. eCollection , 2014. PMID: 24911348

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