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Potassium in PDB 2atk: Structure of A Mutant Kcsa K+ Channel

Protein crystallography data

The structure of Structure of A Mutant Kcsa K+ Channel, PDB code: 2atk was solved by J.F.Cordero-Morales, L.G.Cuello, Y.Zhao, V.Jogini, S.Chakrapani, B.Roux, E.Perozo, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 50.00 / 2.50
Space group I 4
Cell size a, b, c (Å), α, β, γ (°) 155.160, 155.160, 75.712, 90.00, 90.00, 90.00
R / Rfree (%) 23.8 / 26.1

Potassium Binding Sites:

The binding sites of Potassium atom in the Structure of A Mutant Kcsa K+ Channel (pdb code 2atk). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 7 binding sites of Potassium where determined in the Structure of A Mutant Kcsa K+ Channel, PDB code: 2atk:
Jump to Potassium binding site number: 1; 2; 3; 4; 5; 6; 7;

Potassium binding site 1 out of 7 in 2atk

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Potassium binding site 1 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
C:K125

b:56.2
occ:0.25
O C:GLY77 3.1 42.7 1.0
K C:K130 3.4 71.0 0.2
K C:K126 3.6 57.7 0.2
C C:GLY77 3.6 39.8 1.0
CA C:GLY77 4.1 38.0 1.0
N C:TYR78 4.3 41.3 1.0
N C:GLY77 4.4 36.8 1.0
CA C:TYR78 4.6 42.0 1.0
N C:GLY79 4.8 46.5 1.0

Potassium binding site 2 out of 7 in 2atk

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Potassium binding site 2 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
C:K126

b:57.7
occ:0.25
K C:K127 2.8 68.0 0.2
N C:GLY77 3.5 36.8 1.0
K C:K125 3.6 56.2 0.2
CA C:VAL76 4.2 35.0 1.0
CA C:GLY77 4.3 38.0 1.0
O C:GLY77 4.3 42.7 1.0
C C:VAL76 4.3 36.4 1.0
O C:THR75 4.4 39.2 1.0
CG1 C:VAL76 4.7 28.9 1.0
C C:GLY77 4.8 39.8 1.0

Potassium binding site 3 out of 7 in 2atk

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Potassium binding site 3 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
C:K127

b:68.0
occ:0.25
K C:K126 2.8 57.7 0.2
O C:THR75 2.9 39.2 1.0
K C:K128 3.1 88.3 0.2
C C:THR75 4.0 38.7 1.0
CA C:VAL76 4.2 35.0 1.0
N C:VAL76 4.6 36.1 1.0
OG1 C:THR75 4.8 38.8 1.0
CB C:THR75 4.8 39.9 1.0
CG2 C:VAL76 4.9 30.5 1.0
N C:GLY77 4.9 36.8 1.0

Potassium binding site 4 out of 7 in 2atk

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Potassium binding site 4 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
C:K128

b:88.3
occ:0.25
K C:K127 3.1 68.0 0.2
OG1 C:THR75 3.2 38.8 1.0
CB C:THR75 3.9 39.9 1.0
O C:THR75 3.9 39.2 1.0
C C:THR75 4.6 38.7 1.0
O C:THR74 4.7 38.6 1.0
CG2 C:THR75 4.9 39.9 1.0
CA C:THR75 4.9 38.8 1.0

Potassium binding site 5 out of 7 in 2atk

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Potassium binding site 5 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:

Potassium binding site 6 out of 7 in 2atk

Go back to Potassium Binding Sites List in 2atk
Potassium binding site 6 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 6 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
C:K130

b:71.0
occ:0.25
N C:GLY79 3.1 46.5 1.0
K C:K125 3.4 56.2 0.2
CA C:GLY79 3.5 48.7 1.0
C C:TYR78 4.3 43.7 1.0
O C:GLY79 4.4 52.2 1.0
C C:GLY79 4.5 51.1 1.0
CA C:TYR78 4.6 42.0 1.0
O C:HOH205 4.7 62.4 0.5

Potassium binding site 7 out of 7 in 2atk

Go back to Potassium Binding Sites List in 2atk
Potassium binding site 7 out of 7 in the Structure of A Mutant Kcsa K+ Channel


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 7 of Structure of A Mutant Kcsa K+ Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
C:K131

b:55.8
occ:0.25
NE2 C:HIS124 2.7 76.3 1.0
CE1 C:HIS124 3.5 77.1 1.0
CD2 C:HIS124 3.8 76.7 1.0
ND1 C:HIS124 4.7 78.0 1.0
CG C:HIS124 4.8 77.1 1.0
NE2 C:GLN119 4.9 82.0 1.0

Reference:

J.F.Cordero-Morales, L.G.Cuello, Y.Zhao, V.Jogini, D.M.Cortes, B.Roux, E.Perozo. Molecular Determinants of Gating at the Potassium-Channel Selectivity Filter. Nat.Struct.Mol.Biol. V. 13 311 2006.
ISSN: ISSN 1545-9993
PubMed: 16532009
DOI: 10.1038/NSMB1069
Page generated: Mon Aug 12 06:02:45 2024

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