2I6R:
reference: Structure of [NiFe]-Hydrogenase Maturation Protein HypE from Escherichia coli and its Interaction with HypF., Rangarajan ES, Asinas A, Proteau A, Munger C, Baardsnes J, Iannuzzi P, Matte A, Cygler M, J Bacteriol. 2007 Dec 7;. PMID: 18065529

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