1DGW:
reference: X-ray diffraction and atomic force microscopy analysis of twinned crystals: rhombohedral canavalin., Ko TP, Kuznetsov YG, Malkin AJ, Day J, McPherson A, Acta Crystallogr D Biol Crystallogr 2001 Jun;57(Pt 6):829-39. Epub 2001, May 25. PMID: 11375502

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