1HEI:
reference: Structure of the hepatitis C virus RNA helicase domain., Yao N, Hesson T, Cable M, Hong Z, Kwong AD, Le HV, Weber PC, Nat Struct Biol 1997 Jun;4(6):463-7. PMID: 9187654

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