4AIY: R6 Human Insulin Hexamer (Symmetric), Nmr, 'Green' Substate, Structure
reference: Unraveling the symmetry ambiguity in a hexamer: calculation of the R6 human insulin structure., O'Donoghue SI, Chang X, Abseher R, Nilges M, Led JJ, J Biomol NMR 2000 Feb;16(2):93-108. PMID: 10723989

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