2GKN:
reference: Ligand interactions in the distal heme pocket of Mycobacterium tuberculosis truncated hemoglobin N: roles of TyrB10 and GlnE11 residues., Ouellet Y, Milani M, Couture M, Bolognesi M, Guertin M, Biochemistry. 2006 Jul 25;45(29):8770-81. PMID: 16846220

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