1SKV:
reference: Structure of D-63 from sulfolobus spindle-shaped virus 1: surface properties of the dimeric four-helix bundle suggest an adaptor protein function., Kraft P, Kummel D, Oeckinghaus A, Gauss GH, Wiedenheft B, Young M, Lawrence CM, J Virol 2004 Jul;78(14):7438-42. PMID: 15220417

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