2Q31:
reference: Multiple crystal structures of actin dimers and their implications for interactions in the actin filament., Sawaya MR, Kudryashov DS, Pashkov I, Adisetiyo H, Reisler E, Yeates TO, Acta Crystallogr D Biol Crystallogr. 2008 Apr;64(Pt 4):454-65. Epub 2008, Mar 19. PMID: 18391412

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