PDB ID:1Q3I Metal site ID: 1Q3I-NI-1 Bound amino acids or nucleotide residues: H6 Group identifier: Is homomeric: True Amino acid or nucleotide residue IDs: HIS A.590 HIS A.592 All ligands IDs: HIS A.590 HIS A.592 Number of coordinating amino acids or nucleotide residues: 6 Number of coordinating ligands: 6 Number of coordinating chains: 3 Number of coordinating chains: 3