3SPI

Inward rectifier potassium channel Kir2.2 in complex with PIP2

Functional Information from GO Data

Chain	GOid	namespace	contents
A	0005242	molecular_function	inward rectifier potassium channel activity
A	0006813	biological_process	potassium ion transport
A	0016020	cellular_component	membrane

Functional Information from PDB Data

site_id	AC1
Number of Residues	12
Details	BINDING SITE FOR RESIDUE K A 501

Chain	Residue
A	GLY145
A	K502
A	K502
A	K502
A	GLY145
A	GLY145
A	GLY145
A	TYR146
A	TYR146
A	TYR146
A	TYR146
A	K502

---

site_id	AC2
Number of Residues	16
Details	BINDING SITE FOR RESIDUE K A 502

Chain	Residue
A	ILE144
A	ILE144
A	ILE144
A	ILE144
A	GLY145
A	GLY145
A	GLY145
A	GLY145
A	K501
A	K501
A	K501
A	K501
A	K503
A	K503
A	K503
A	K503

---

site_id	AC3
Number of Residues	16
Details	BINDING SITE FOR RESIDUE K A 503

Chain	Residue
A	THR143
A	THR143
A	THR143
A	THR143
A	ILE144
A	ILE144
A	ILE144
A	ILE144
A	K502
A	K502
A	K502
A	K502
A	K504
A	K504
A	K504
A	K504

---

site_id	AC4
Number of Residues	8
Details	BINDING SITE FOR RESIDUE K A 504

Chain	Residue
A	THR143
A	THR143
A	THR143
A	THR143
A	K503
A	K503
A	K503
A	K503

---

site_id	AC5
Number of Residues	8
Details	BINDING SITE FOR RESIDUE PIO A 400

Chain	Residue
A	ASP76
A	ARG78
A	TRP79
A	ARG80
A	LYS183
A	ARG186
A	LYS188
A	LYS189

---

Functional Information from SwissProt/UniProt

site_id	SWS_FT_FI1
Number of Residues	75
Details	TOPO_DOM: Cytoplasmic => ECO:0000305|PubMed:21874019

Chain	Residue	Details
A	MET36-LEU111

---

site_id	SWS_FT_FI2
Number of Residues	26
Details	TRANSMEM: Helical; Name=M1 => ECO:0000269|PubMed:21874019, ECO:0007744|PDB:3SPC

Chain	Residue	Details
A	GLU112-ILE138

---

site_id	SWS_FT_FI3
Number of Residues	33
Details	TOPO_DOM: Extracellular => ECO:0000305|PubMed:21874019

Chain	Residue	Details
A	GLU139-VAL164
A	ALA182-ARG190

---

site_id	SWS_FT_FI4
Number of Residues	16
Details	INTRAMEM: Helical; Pore-forming; Name=H5 => ECO:0000269|PubMed:21874019, ECO:0007744|PDB:3SPC

Chain	Residue	Details
A	GLN165-MET181

---

site_id	SWS_FT_FI5
Number of Residues	27
Details	TRANSMEM: Helical; Name=M2 => ECO:0000269|PubMed:21874019, ECO:0007744|PDB:3SPC

Chain	Residue	Details
A	ALA191-LEU218

---

site_id	SWS_FT_FI6
Number of Residues	8
Details	BINDING: BINDING => ECO:0000269|PubMed:21874019, ECO:0007744|PDB:3SPI

Chain	Residue	Details
A	ASN113
A	GLY115
A	GLY178
A	ALA179
A	ILE180
A	MET181
A	LEU218
A	ILE223

---