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Potassium in PDB 2r9r: Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit

Protein crystallography data

The structure of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit, PDB code: 2r9r was solved by S.B.Long, X.Tao, E.B.Campbell, R.Mackinnon, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 49.66 / 2.40
Space group P 4 21 2
Cell size a, b, c (Å), α, β, γ (°) 144.049, 144.049, 284.397, 90.00, 90.00, 90.00
R / Rfree (%) 21.2 / 24.4

Potassium Binding Sites:

The binding sites of Potassium atom in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit (pdb code 2r9r). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 8 binding sites of Potassium where determined in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit, PDB code: 2r9r:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6; 7; 8;

Potassium binding site 1 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 1 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K496

b:38.3
occ:0.25
 O B:TYR373 2.6 25.5 1.0
O B:GLY372 3.3 25.9 1.0
C B:TYR373 3.4 26.3 1.0
K B:K497 3.9 35.4 0.2
CA B:TYR373 4.1 26.2 1.0
N B:GLY374 4.3 26.4 1.0
C B:GLY372 4.4 25.5 1.0
CA B:GLY374 4.5 27.4 1.0
N B:TYR373 4.7 25.5 1.0

Potassium binding site 2 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 2 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K497

b:35.4
occ:0.25
 O B:VAL371 2.8 22.0 1.0
O B:GLY372 2.8 25.9 1.0
K B:K498 3.2 29.6 0.2
C B:GLY372 3.5 25.5 1.0
K B:K496 3.9 38.3 0.2
C B:VAL371 3.9 24.7 1.0
CA B:GLY372 4.0 24.5 1.0
N B:GLY372 4.4 24.9 1.0
N B:TYR373 4.5 25.5 1.0
CA B:TYR373 4.9 26.2 1.0

Potassium binding site 3 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 3 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K498

b:29.6
occ:0.25
 O B:THR370 2.7 25.1 1.0
O B:VAL371 2.9 22.0 1.0
K B:K497 3.2 35.4 0.2
K B:K499 3.4 35.2 0.2
C B:VAL371 3.6 24.7 1.0
C B:THR370 3.9 26.7 1.0
CA B:VAL371 4.1 24.8 1.0
N B:VAL371 4.5 26.0 1.0
N B:GLY372 4.6 24.9 1.0
CA B:GLY372 5.0 24.5 1.0

Potassium binding site 4 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 4 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
B:K499

b:35.2
occ:0.25
 OG1 B:THR370 2.9 28.0 1.0
O B:THR370 3.0 25.1 1.0
K B:K498 3.4 29.6 0.2
CB B:THR370 3.6 28.9 1.0
C B:THR370 4.0 26.7 1.0
CA B:THR370 4.5 27.5 1.0
CG2 B:THR370 4.9 28.1 1.0
O B:THR369 4.9 30.1 1.0
N B:VAL371 5.0 26.0 1.0

Potassium binding site 5 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 5 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
H:K496

b:49.3
occ:0.25
 O H:TYR373 2.6 49.3 1.0
O H:GLY372 3.3 47.0 1.0
C H:TYR373 3.5 50.0 1.0
K H:K497 3.8 51.5 0.2
CA H:TYR373 4.2 49.1 1.0
N H:GLY374 4.4 50.9 1.0
C H:GLY372 4.4 47.1 1.0
CA H:GLY374 4.6 52.4 1.0
N H:TYR373 4.8 47.4 1.0

Potassium binding site 6 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 6 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 6 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
H:K497

b:51.5
occ:0.25
 O H:GLY372 2.7 47.0 1.0
O H:VAL371 2.8 45.0 1.0
K H:K498 3.3 51.8 0.2
C H:GLY372 3.5 47.1 1.0
K H:K496 3.8 49.3 0.2
C H:VAL371 4.0 45.8 1.0
CA H:GLY372 4.0 47.0 1.0
N H:GLY372 4.5 46.3 1.0
N H:TYR373 4.5 47.4 1.0
CA H:TYR373 4.9 49.1 1.0

Potassium binding site 7 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 7 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 7 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
H:K498

b:51.8
occ:0.25
 O H:THR370 2.7 45.0 1.0
O H:VAL371 3.0 45.0 1.0
K H:K499 3.3 51.6 0.2
K H:K497 3.3 51.5 0.2
C H:VAL371 3.7 45.8 1.0
C H:THR370 3.9 45.5 1.0
CA H:VAL371 4.1 45.5 1.0
N H:VAL371 4.5 45.7 1.0
N H:GLY372 4.6 46.3 1.0

Potassium binding site 8 out of 8 in 2r9r

Go back to Potassium Binding Sites List in 2r9r
Potassium binding site 8 out of 8 in the Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 8 of Shaker Family Voltage Dependent Potassium Channel (KV1.2-KV2.1 Paddle Chimera Channel) in Association with Beta Subunit within 5.0Å range:
probe atom residue distance (Å) B Occ
H:K499

b:51.6
occ:0.25
 OG1 H:THR370 3.0 46.1 1.0
O H:THR370 3.2 45.0 1.0
K H:K498 3.3 51.8 0.2
CB H:THR370 3.6 46.6 1.0
C H:THR370 4.0 45.5 1.0
CA H:THR370 4.5 45.8 1.0
CG2 H:THR370 4.8 47.0 1.0

Reference:

S.B.Long, X.Tao, E.B.Campbell, R.Mackinnon. Atomic Structure of A Voltage-Dependent K+ Channel in A Lipid Membrane-Like Environment. Nature V. 450 376 2007.
ISSN: ISSN 0028-0836
PubMed: 18004376
DOI: 10.1038/NATURE06265
Page generated: Sat Aug 9 03:51:09 2025

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