3VKW:
reference: Crystal structure of the superfamily 1 helicase from tomato mosaic virus., Nishikiori M, Sugiyama S, Xiang H, Niiyama M, Ishibashi K, Inoue T, Ishikawa M, Matsumura H, Katoh E, J Virol. 2012 Jul;86(14):7565-76. Epub 2012 May 9. PMID: 22573863

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