7MUB

KcsA Open gate E71V mutant in Potassium

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Fab heavy chain	polymer	229	24379.1	1		Synthetic construct
2	B	Fab light chain	polymer	215	23604.2	1		Synthetic construct
3	C	pH-gated potassium channel KcsA	polymer	96	10133.9	1	UniProt (P0A334) Pfam (PF00520) Pfam (PF07885) In PDB	Streptomyces lividans	Streptomyces lividans K+ channel,SKC1
4	C	POTASSIUM ION	non-polymer		39.1	2	Chemie (K)
5		water	water		18.0	27	Chemie (HOH)

Sequence modifications

C: 26 - 121 (UniProt: P0A334)

PDB	External Database	Details
Cys 28	Ala 28	engineered mutation
Val 71	Glu 71	engineered mutation
Cys 90	Leu 90	engineered mutation
Gln 117	Arg 117	engineered mutation
Cys 118	Glu 118	engineered mutation
Gln 120	Glu 120	engineered mutation
Gln 121	Arg 121	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	58117.2
Non-Polymers*	Number of molecules	2
	Total formula weight	78.2
All*	Total formula weight	58195.4

*Water molecules are not included.