Id Element Ion Binding family Amino acids or nucleotide residues names All bound residues Is homomer Number of bound amino acids or nucleotide residues Number of all bound residues Number of coordinating chains Representative
3N4Q-MG-2 MG Mg²⁺ D1E1N1 ASN.ASP.GLU. ASN.ASP.GLU. 3 3 2
1G9U-CA-5 CA Ca²⁺ D1E1N1 ASN.ASP.GLU. ASN.ASP.GLU.HOH. 3 7 2
1G9U-CA-6 CA Ca²⁺ D1E1N1 ASN.ASP.GLU. ASN.ASP.GLU.HOH. 3 7 2
1G9U-CA-7 CA Ca²⁺ D1E1N1 ASN.ASP.GLU. ASN.ASP.GLU.HOH. 3 7 2
1G9U-CA-8 CA Ca²⁺ D1E1N1 ASN.ASP.GLU. ASN.ASP.GLU.HOH. 3 7 2