5FTB:
reference: Crystal structures of the BsPif1 helicase reveal that a major movement of the 2B SH3 domain is required for DNA unwinding., Chen WF, Dai YX, Duan XL, Liu NN, Shi W, Li N, Li M, Dou SX, Dong YH, Rety S, Xi XG, Nucleic Acids Res. 2016 Jan 24. pii: gkw033. PMID: 26809678

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