1N3C:
reference: Structural and biochemical exploration of a critical amino acid in human 8-oxoguanine glycosylase., Norman DP, Chung SJ, Verdine GL, Biochemistry 2003 Feb 18;42(6):1564-72. PMID: 12578369

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