3AZU:
reference: X-ray crystal structure of the two site-specific mutants His35Gln and His35Leu of azurin from Pseudomonas aeruginosa., Nar H, Messerschmidt A, Huber R, van de Kamp M, Canters GW, J Mol Biol 1991 Mar 20;218(2):427-47. PMID: 1901363

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