2OWH:
reference: Time-resolved crystallographic studies of the heme domain of the oxygen sensor FixL: structural dynamics of ligand rebinding and their relation to signal transduction., Key J, Srajer V, Pahl R, Moffat K, Biochemistry. 2007 Apr 24;46(16):4706-15. Epub 2007 Mar 27. PMID: 17385895

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