1E9O:
reference: Conformational variability of the Cu site in one subunit of bovine CuZn superoxide dismutase: the importance of mobility in the Glu119-Leu142 loop region for catalytic function., Hough MA, Strange RW, Hasnain SS, J Mol Biol 2000 Nov 24;304(2):231-41. PMID: 11080458

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