PDB ID:1Q3I Metal site ID: 1Q3I-NI-2 Bound amino acids or nucleotide residues: H6 Group identifier: H6 Is homomeric: True Amino acid or nucleotide residue IDs: HIS A.587 HIS A.589 All ligands IDs: HIS A.587 HIS A.589 Number of coordinating amino acids or nucleotide residues: 6 Number of coordinating ligands: 6 Number of coordinating chains: 3 Number of coordinating chains: 3