2VQ9:
reference: Ribonuclease A homologues of the zebrafish: polymorphism, crystal structures of two representatives and their evolutionary implications., Kazakou K, Holloway DE, Prior SH, Subramanian V, Acharya KR, J Mol Biol. 2008 Jun 27;380(1):206-22. Epub 2008 May 4. PMID: 18508078

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