6SZC:
reference: The streptococcal multidomain fibrillar adhesin CshA has an elongated polymeric architecture., Back CR, Higman VA, LeVay K, Patel VV, Parnell AE, Frankel D, Jenkinson HF, Burston SG, Crump MP, Nobbs AH, Race PR, J Biol Chem. 2020 Mar 30. pii: RA119.011719. doi: 10.1074/jbc.RA119.011719. PMID: 32229583

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