6NFU

Structure of the KcsA-G77A mutant or the 2,4-ion bound configuration of a K+ channel selectivity filter.

Functional Information from GO Data

Chain	GOid	namespace	contents
C	0005249	molecular_function	voltage-gated potassium channel activity
C	0006813	biological_process	potassium ion transport
C	0008076	cellular_component	voltage-gated potassium channel complex

Functional Information from PDB Data

site_id	AC1
Number of Residues	2
Details	binding site for residue F09 A 2001

Chain	Residue
A	ARG57
C	TRP87

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site_id	AC2
Number of Residues	15
Details	binding site for residue 1EM C 1001

Chain	Residue
C	ARG89
C	HOH1101
C	HOH1102
C	HOH1103
C	HOH1105
C	HOH1106
C	HOH1131
C	HOH1132
A	THR30
C	LEU41
C	TYR45
C	PRO63
C	LEU66
C	VAL70
C	LEU86

---

site_id	AC3
Number of Residues	4
Details	binding site for residue K C 1002

Chain	Residue
C	HOH1125
C	HOH1125
C	HOH1125
C	HOH1125

---

site_id	AC4
Number of Residues	12
Details	binding site for residue K C 1003

Chain	Residue
C	ALA77
C	ALA77
C	ALA77
C	ALA77
C	HOH1134
C	HOH1134
C	HOH1134
C	HOH1134
C	HOH1136
C	HOH1136
C	HOH1136
C	HOH1136

---

site_id	AC5
Number of Residues	4
Details	binding site for residue K C 1004

Chain	Residue
C	THR75
C	THR75
C	THR75
C	THR75

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Functional Information from PROSITE/UniProt

site_id	PS00290
Number of Residues	7
Details	IG_MHC Immunoglobulins and major histocompatibility complex proteins signature. YTCEATH

Chain	Residue	Details
B	TYR192-HIS198

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Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	45
Details	TRANSMEM: Helical

Chain	Residue	Details
C	ALA28-ALA50
C	GLY88-ALA111

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site_id	SWS_FT_FI2
Number of Residues	16
Details	TOPO_DOM: Extracellular

Chain	Residue	Details
C	GLU51-THR61
C	LEU81-TRP87

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site_id	SWS_FT_FI3
Number of Residues	10
Details	INTRAMEM: Helical; Pore-forming

Chain	Residue	Details
C	TYR62-THR72

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site_id	SWS_FT_FI4
Number of Residues	7
Details	INTRAMEM: Pore-forming

Chain	Residue	Details
C	ALA73-ASP80

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