1AAJ:
reference: Crystal structure analysis of amicyanin and apoamicyanin from Paracoccus denitrificans at 2.0 A and 1.8 A resolution., Durley R, Chen L, Lim LW, Mathews FS, Davidson VL, Protein Sci 1993 May;2(5):739-52. PMID: 8495197

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