1OSP:
reference: Crystal structure of Lyme disease antigen outer surface protein A complexed with an Fab., Li H, Dunn JJ, Luft BJ, Lawson CL, Proc Natl Acad Sci U S A 1997 Apr 15;94(8):3584-9. PMID: 9108020

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