4MTF

Structural Basis of Ca2+ Selectivity of a Voltage-gated Calcium Channel

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Ion transport protein	polymer	237	27457.6	4	UniProt (A8EVM5) Pfam (PF00520) Pfam (PF08016)	Arcobacter butzleri
2	E, O (A, C)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	F, G, H, I, J... (A, B, C, D)	1,2-DIMYRISTOYL-SN-GLYCERO-3-PHOSPHOCHOLINE	non-polymer		678.9	16	Chemie (PX4)
4	W, X, Y (A, B, D)	water	water		18.0	4	Chemie (HOH)

Sequence modifications

A, B, C, D: 1001 - 1219 (UniProt: A8EVM5)

PDB	External Database	Details
Met 983	-	expression tag
Asp 984	-	expression tag
Tyr 985	-	expression tag
Lys 986	-	expression tag
Asp 987	-	expression tag
Asp 988	-	expression tag
Asp 989	-	expression tag
Asp 990	-	expression tag
Lys 991	-	expression tag
Gly 992	-	expression tag
Ser 993	-	expression tag
Leu 994	-	expression tag
Val 995	-	expression tag
Pro 996	-	expression tag
Arg 997	-	expression tag
Gly 998	-	expression tag
Ser 999	-	expression tag
His 1000	-	expression tag
Asp 1177	Glu 177	conflict
Asp 1178	Ser 178	conflict
Asn 1181	Met 181	conflict
Cys 1217	Ile 217	conflict

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	109830.4
Non-Polymers*	Number of molecules	18
	Total formula weight	10943.2
All*	Total formula weight	120773.6

*Water molecules are not included.