3OUF

Structure of a K+ selective NaK mutant

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Potassium channel protein	polymer	97	10771.7	2	UniProt (C2R3K4) In PDB	Bacillus cereus
2	A, B	(4S)-2-METHYL-2,4-PENTANEDIOL	non-polymer		118.2	5	Chemie (MPD)
3	A, B	POTASSIUM ION	non-polymer		39.1	9	Chemie (K)
4		water	water		18.0	72	Chemie (HOH)

Sequence modifications

A, B: 20 - 110 (UniProt: C2R3K4)

PDB	External Database	Details
Met 18	-	expression tag
Ala 19	-	expression tag
Val 29	Ile 29	conflict
Tyr 66	Asp 66	engineered mutation
Leu 111	-	expression tag
Val 112	-	expression tag
Pro 113	-	expression tag
Arg 114	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	21543.3
Non-Polymers*	Number of molecules	14
	Total formula weight	942.8
All*	Total formula weight	22486.1

*Water molecules are not included.