[{"site":"12ca_1","metals":[{"symbol":"Hg","ligands":[{"chain":"A","residue_pdb_number":137,"residue":"GLN"},{"chain":"A","residue_pdb_number":206,"residue":"CYS"}],"atom_pdb_number":2030,"name":"Mercury","residue_pdb_number":263}]},{"site":"12ca_2","metals":[{"symbol":"Zn","ligands":[{"chain":"A","residue_pdb_number":94,"residue":"HIS"},{"chain":"A","residue_pdb_number":119,"residue":"HIS"},{"chain":"A","residue_pdb_number":96,"residue":"HIS"}],"atom_pdb_number":2029,"name":"Zinc","residue_pdb_number":262}]}]