3PJS

Mechanism of Activation Gating in the Full-Length KcsA K+ Channel

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C (A, C)	FAB light chain	polymer	215	23562.1	2		Mus musculus
2	B, D (B, D)	FAB heavy chain	polymer	224	23905.6	2		Mus musculus
3	E, F, G, H (K, L, M, N)	Voltage-gated potassium channel	polymer	166	18509.4	4	UniProt (P0A334) Pfam (PF00520) Pfam (PF07885)	Streptomyces lividans	KcsA

Sequence modifications

K, L, M, N: 22 - 160 (UniProt: P0A334)

PDB	External Database	Details
Met -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag
Pro 2	-	expression tag
Pro 3	-	expression tag
Met 4	-	expression tag
Leu 5	-	expression tag
Ser 6	-	expression tag
Gly 7	-	expression tag
Leu 8	-	expression tag
Leu 9	-	expression tag
Ala 10	-	expression tag
Arg 11	-	expression tag
Leu 12	-	expression tag
Val 13	-	expression tag
Lys 14	-	expression tag
Leu 15	-	expression tag
Leu 16	-	expression tag
Leu 17	-	expression tag
Gly 18	-	expression tag
Arg 19	-	expression tag
His 20	-	expression tag
Gly 21	-	expression tag
Gln 25	His 25	engineered mutation
Gln 117	Arg 117	engineered mutation
Gln 120	Glu 120	engineered mutation
Gln 121	Arg 121	engineered mutation
Gln 122	Arg 122	engineered mutation
Gln 123	Gly 123	engineered mutation
Gln 124	His 124	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	8
	Total formula weight	168972.9
All*	Total formula weight	168972.9

*Water molecules are not included.