1RSE:
reference: Electrostatic modification of the active site of myoglobin: characterization of the proximal Ser92Asp variant., Lloyd E, Burk DL, Ferrer JC, Maurus R, Doran J, Carey PR, Brayer GD, Mauk AG, Biochemistry 1996 Sep 10;35(36):11901-12. PMID: 8794773

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