1XL4

Intermediate gating structure 1 of the inwardly rectifying K+ channel KirBac3.1

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Inward rectifier potassium channel	polymer	301	33782.8	2	GenBank (46201166) Pfam (PF01007) Pfam (PF07885) Pfam (PF17655) UniProt (by SIFTS) (Q2W6R1)	Magnetospirillum magnetotacticum	Inwardly rectifying K+ channel KirBac3.1, COG1226: Kef-type K+ transport systems, predicted NAD-binding component
2	C, D, E, F, G (A)	POTASSIUM ION	non-polymer		39.1	5	Chemie (K)
3	H (A)	MAGNESIUM ION	non-polymer		24.3	1	Chemie (MG)
4	I, J (A, B)	water	water		18.0	180	Chemie (HOH)

Sequence modifications

A, B: 5 - 295 (GenBank: 46201166)

PDB	External Database	Details
Met 1	-	expression tag
Thr 2	-	expression tag
Gly 3	-	expression tag
Gly 4	-	expression tag
His 296	-	expression tag
His 297	-	expression tag
His 298	-	expression tag
His 299	-	expression tag
His 300	-	expression tag
His 301	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	67565.5
Non-Polymers*	Number of molecules	6
	Total formula weight	219.8
All*	Total formula weight	67785.3

*Water molecules are not included.