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https://top500.org/system/174802/ CU-C - eServer x3755 Opteron dual core 2.2 GHz Infiniband | TOP500 cu c dual core eserver opteron https://www.ncbi.nlm.nih.gov/Structure/pdb/3KBF 3KBF: C. Elegans Cu,Zn Superoxide Dismutase SUPEROXIDE DISMUTASE [CU-ZN]Copper (ii) IonSulfate IonZinc Ion c elegans cu zn superoxide dismutase