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Potassium in PDB 2qto: An Anisotropic Model For Potassium Channel Kcsa

Protein crystallography data

The structure of An Anisotropic Model For Potassium Channel Kcsa, PDB code: 2qto was solved by X.Chen, B.K.Poon, A.Dousis, Q.Wang, J.Ma, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 9.99 / 3.20
Space group C 1 2 1
Cell size a, b, c (Å), α, β, γ (°) 128.780, 68.930, 112.040, 90.00, 124.63, 90.00
R / Rfree (%) 27.2 / 27.2

Potassium Binding Sites:

The binding sites of Potassium atom in the An Anisotropic Model For Potassium Channel Kcsa (pdb code 2qto). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 3 binding sites of Potassium where determined in the An Anisotropic Model For Potassium Channel Kcsa, PDB code: 2qto:
Jump to Potassium binding site number: 1; 2; 3;

Potassium binding site 1 out of 3 in 2qto

Go back to Potassium Binding Sites List in 2qto
Potassium binding site 1 out of 3 in the An Anisotropic Model For Potassium Channel Kcsa


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of An Anisotropic Model For Potassium Channel Kcsa within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K1

b:79.4
occ:1.00
 OG1 D:THR75 2.7 81.1 1.0
OG1 A:THR75 2.7 80.7 1.0
OG1 C:THR75 2.7 80.6 1.0
OG1 B:THR75 2.7 80.9 1.0
O B:THR75 3.0 78.7 1.0
O D:THR75 3.0 79.3 1.0
O A:THR75 3.1 78.1 1.0
O C:THR75 3.1 78.7 1.0
K A:K2 3.4 77.1 1.0
CB A:THR75 3.9 81.6 1.0
CB C:THR75 3.9 80.8 1.0
CB D:THR75 4.0 81.9 1.0
CB B:THR75 4.0 81.3 1.0
C B:THR75 4.0 78.9 1.0
C A:THR75 4.1 78.9 1.0
C D:THR75 4.1 80.1 1.0
C C:THR75 4.1 79.1 1.0
CA A:THR75 4.7 80.7 1.0
CA B:THR75 4.7 80.3 1.0
CA D:THR75 4.7 81.5 1.0
CA C:THR75 4.7 80.1 1.0
O A:THR74 4.7 82.6 1.0
O C:THR74 4.7 82.2 1.0
O D:THR74 4.7 84.2 1.0
O B:THR74 4.8 81.8 1.0

Potassium binding site 2 out of 3 in 2qto

Go back to Potassium Binding Sites List in 2qto
Potassium binding site 2 out of 3 in the An Anisotropic Model For Potassium Channel Kcsa


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of An Anisotropic Model For Potassium Channel Kcsa within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K2

b:77.1
occ:1.00
 O D:THR75 2.7 79.3 1.0
O A:THR75 2.7 78.1 1.0
O C:THR75 2.8 78.7 1.0
O B:THR75 2.8 78.7 1.0
O D:VAL76 3.0 76.8 1.0
O B:VAL76 3.1 75.3 1.0
O A:VAL76 3.1 75.7 1.0
O C:VAL76 3.1 76.2 1.0
O B:HOH4 3.3 74.6 1.0
K A:K1 3.4 79.4 1.0
C D:VAL76 3.6 77.8 1.0
C A:VAL76 3.7 76.7 1.0
C B:VAL76 3.7 76.0 1.0
C C:VAL76 3.7 76.8 1.0
C D:THR75 3.8 80.1 1.0
C A:THR75 3.8 78.9 1.0
C C:THR75 3.9 79.1 1.0
CA D:VAL76 3.9 79.2 1.0
C B:THR75 3.9 78.9 1.0
CA C:VAL76 4.0 78.0 1.0
CA A:VAL76 4.0 77.7 1.0
CA B:VAL76 4.1 76.9 1.0
N D:VAL76 4.3 80.0 1.0
N A:VAL76 4.4 78.9 1.0
N C:VAL76 4.4 78.4 1.0
N B:VAL76 4.5 77.8 1.0
N D:GLY77 4.6 76.5 1.0
OG1 D:THR75 4.6 81.1 1.0
N A:GLY77 4.6 76.3 1.0
OG1 A:THR75 4.6 80.7 1.0
N B:GLY77 4.7 75.2 1.0
N C:GLY77 4.7 75.8 1.0
OG1 C:THR75 4.7 80.6 1.0
OG1 B:THR75 4.8 80.9 1.0
CA D:THR75 5.0 81.5 1.0
CA A:THR75 5.0 80.7 1.0

Potassium binding site 3 out of 3 in 2qto

Go back to Potassium Binding Sites List in 2qto
Potassium binding site 3 out of 3 in the An Anisotropic Model For Potassium Channel Kcsa


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of An Anisotropic Model For Potassium Channel Kcsa within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K3

b:72.9
occ:1.00
 O D:TYR78 2.6 73.1 1.0
O A:TYR78 2.7 73.2 1.0
O B:TYR78 2.7 71.7 1.0
O C:TYR78 2.8 73.2 1.0
O D:GLY77 3.1 73.9 1.0
O A:GLY77 3.1 74.0 1.0
O B:GLY77 3.2 73.4 1.0
O C:GLY77 3.2 73.9 1.0
C D:TYR78 3.4 74.0 1.0
C A:TYR78 3.5 73.9 1.0
C B:TYR78 3.5 72.1 1.0
O B:HOH4 3.5 74.6 1.0
C C:TYR78 3.6 73.6 1.0
CA D:TYR78 4.1 74.7 1.0
N D:GLY79 4.2 73.5 1.0
C D:GLY77 4.2 74.8 1.0
N A:GLY79 4.2 73.8 1.0
CA A:TYR78 4.2 74.3 1.0
C A:GLY77 4.2 74.8 1.0
N B:GLY79 4.3 71.6 1.0
CA B:TYR78 4.3 72.5 1.0
CA C:TYR78 4.3 74.2 1.0
C B:GLY77 4.3 73.9 1.0
C C:GLY77 4.3 74.5 1.0
N C:GLY79 4.4 74.1 1.0
CA D:GLY79 4.4 73.5 1.0
CA A:GLY79 4.4 74.0 1.0
CA B:GLY79 4.4 71.8 1.0
CA C:GLY79 4.6 74.1 1.0
N D:TYR78 4.6 74.9 1.0
N A:TYR78 4.7 74.8 1.0
N B:TYR78 4.8 72.8 1.0
N C:TYR78 4.8 74.2 1.0

Reference:

X.Chen, B.K.Poon, A.Dousis, Q.Wang, J.Ma. Normal-Mode Refinement of Anisotropic Thermal Parameters For Potassium Channel Kcsa at 3.2 A Crystallographic Resolution Structure V. 15 955 2007.
ISSN: ISSN 0969-2126
PubMed: 17698000
DOI: 10.1016/J.STR.2007.06.012
Page generated: Sat Aug 9 03:50:01 2025

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