PDB ID:2DFI Metal site ID: 2DFI-CO-1 Bound amino acids or nucleotide residues: H2 Group identifier: Is homomeric: True Amino acid or nucleotide residue IDs: HIS A.62 HIS B.173 All ligands IDs: HIS A.62 HIS B.173 Number of coordinating amino acids or nucleotide residues: 2 Number of coordinating ligands: 2 Number of coordinating chains: 2 Number of coordinating chains: 2