PDB ID:1U5Z Metal site ID: 1U5Z-NI-1 Bound amino acids or nucleotide residues: H3 Group identifier: Is homomeric: True Amino acid or nucleotide residue IDs: HIS A.106 All ligands IDs: HIS A.106 Number of coordinating amino acids or nucleotide residues: 3 Number of coordinating ligands: 3 Number of coordinating chains: 3 Number of coordinating chains: 3