1PAA:
reference: Structure of a histidine-X4-histidine zinc finger domain: insights into ADR1-UAS1 protein-DNA recognition., Bernstein BE, Hoffman RC, Horvath S, Herriott JR, Klevit RE, Biochemistry 1994 Apr 19;33(15):4460-70. PMID: 8161501

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