PDB ID:4AOJ Metal site ID: 4AOJ-ZN-1 Bound amino acids or nucleotide residues: H1K1 Group identifier: E2 Is homomeric: True Amino acid or nucleotide residue IDs: HIS A.645 LYS B.523 All ligands IDs: HIS A.645 LYS B.523 Number of coordinating amino acids or nucleotide residues: 2 Number of coordinating ligands: 2 Number of coordinating chains: 2 Number of coordinating chains: 2