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
1Y7O-CA-1	CA	Ca²⁺	A1I1S1X1	ALA.ILE.MSE.SER.	ALA.ILE.MSE.SER.	✔	4	4	2	✔
1Y7O-CA-2	CA	Ca²⁺	A1I1S1X1	ALA.ILE.MSE.SER.	ALA.ILE.MSE.SER.	✔	4	4	2	✘