5FTF:
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

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