1N4C:
reference: Structure of the functional fragment of auxilin required for catalytic uncoating of clathrin-coated vesicles., Gruschus JM, Han CJ, Greener T, Ferretti JA, Greene LE, Eisenberg E, Biochemistry 2004 Mar 23;43(11):3111-9. PMID: 15023062

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