6KR2:
reference: A conformation-based intra-molecular initiation factor identified in the flavivirus RNA-dependent RNA polymerase., Wu J, Ye HQ, Zhang QY, Lu G, Zhang B, Gong P, PLoS Pathog. 2020 May 1;16(5):e1008484. doi: 10.1371/journal.ppat.1008484., eCollection 2020 May. PMID: 32357182

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