4R0O:
reference: Structure of a PEGylated protein reveals a highly porous double-helical assembly., Cattani G, Vogeley L, Crowley PB, Nat Chem. 2015 Oct;7(10):823-8. doi: 10.1038/nchem.2342. Epub 2015 Sep 7. PMID: 26391082

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