2ZPA:
reference: RNA helicase module in an acetyltransferase that modifies a specific tRNA anticodon., Chimnaronk S, Suzuki T, Manita T, Ikeuchi Y, Yao M, Suzuki T, Tanaka I, EMBO J. 2009 Mar 26. PMID: 19322199

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