PDB ID:6DK8 Metal site ID: 6DK8-NI-2 Bound amino acids or nucleotide residues: H2 Group identifier: A1H2 Is homomeric: True Amino acid or nucleotide residue IDs: HIS G.591 HIS H.591 All ligands IDs: HIS G.591 HIS H.591 Number of coordinating amino acids or nucleotide residues: 2 Number of coordinating ligands: 2 Number of coordinating chains: 2 Number of coordinating chains: 2