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
2ZAH-CA-177	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
2ZAH-CA-178	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
2ZAH-CA-179	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
2ZAH-CA-180	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
4MC7-CA-1	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	4	✔
4V2X-CA-1	CA	Ca²⁺	D4	ASP.	ASP.HOH.	✔	4	6	2	✔
7K4A-CA-1	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	4	✔
7K4F-CA-1	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	4	✘
6MRL-CA-121	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-122	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-123	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-124	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-125	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-126	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-127	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-128	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-129	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-130	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-131	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘
6MRL-CA-132	CA	Ca²⁺	D4	ASP.	ASP.	✔	4	4	2	✘