1M34:
reference: Biochemical and structural characterization of the cross-linked complex of nitrogenase: comparison to the ADP-AlF4(-)-stabilized structure., Schmid B, Einsle O, Chiu HJ, Willing A, Yoshida M, Howard JB, Rees DC, Biochemistry 2002 Dec 31;41(52):15557-65. PMID: 12501184

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