3U6N

Open Structure of the BK channel Gating Ring

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, E...	High-Conductance Ca2+-Activated K+ Channel protein	polymer	696	78689.1	8	UniProt (B7ZC96) UniProt (F1QYL4) Pfam (PF22614) Pfam (PF03493) Pfam (PF21014) In PDB	Danio rerio (Zebrafish)
2	A, B, C, D, E...	CALCIUM ION	non-polymer		40.1	8	Chemie (CA)

Sequence modifications

A, B, C, D, E, F, G, H: 341 - 838 (UniProt: B7ZC96)

PDB	External Database	Details
Met 340	-	initiating methionine
Arg 578	-	see remark 999
Ser 579	-	see remark 999
Arg 580	-	see remark 999
Lys 581	-	see remark 999
Arg 582	Ser 597	see remark 999

A, B, C, D, E, F, G, H: 873 - 1060 (UniProt: F1QYL4)

PDB	External Database	Details
Ser 1061	-	expression tag
Asn 1062	-	expression tag
Ser 1063	-	expression tag
Leu 1064	-	expression tag
Glu 1065	-	expression tag
Val 1066	-	expression tag
Leu 1067	-	expression tag
Phe 1068	-	expression tag
Gln 1069	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	629512.9
Non-Polymers*	Number of molecules	8
	Total formula weight	320.6
All*	Total formula weight	629833.5

*Water molecules are not included.