5VMW:
reference: CH...O Hydrogen Bonds Mediate Highly Specific Recognition of Methylated CpG Sites by the Zinc Finger Protein Kaiso., Nikolova EN, Stanfield RL, Dyson HJ, Wright PE, Biochemistry. 2018 Mar 26. doi: 10.1021/acs.biochem.8b00065. PMID: 29546986

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