6M40:
reference: Crystal structure of the NS3-like helicase from Alongshan virus., Gao X, Zhu K, Wojdyla JA, Chen P, Qin B, Li Z, Wang M, Cui S, IUCrJ. 2020 Apr 10;7(Pt 3):375-382. doi: 10.1107/S2052252520003632. eCollection, 2020 May 1. PMID: 32431821

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