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Potassium in PDB 6cnm: Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex

Potassium Binding Sites:

The binding sites of Potassium atom in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex (pdb code 6cnm). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 5 binding sites of Potassium where determined in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex, PDB code: 6cnm:
Jump to Potassium binding site number: 1; 2; 3; 4; 5;

Potassium binding site 1 out of 5 in 6cnm

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Potassium binding site 1 out of 5 in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K1001

b:51.2
occ:1.00
 O B:TYR253 2.6 16.1 1.0
O C:TYR253 2.6 20.3 1.0
O A:TYR253 2.6 14.8 1.0
O D:TYR253 2.6 16.9 1.0
O D:GLY252 2.9 14.7 1.0
O C:GLY252 2.9 27.7 1.0
O B:GLY252 2.9 12.7 1.0
O A:GLY252 2.9 13.4 1.0
K A:K1002 3.3 31.8 1.0
C B:TYR253 3.6 16.1 1.0
C C:TYR253 3.6 20.3 1.0
C A:TYR253 3.6 14.8 1.0
C D:TYR253 3.6 16.9 1.0
C D:GLY252 4.1 14.7 1.0
C C:GLY252 4.1 27.7 1.0
C A:GLY252 4.1 13.4 1.0
C B:GLY252 4.1 12.7 1.0
CA B:TYR253 4.1 16.1 1.0
CA A:TYR253 4.1 14.8 1.0
CA C:TYR253 4.1 20.3 1.0
CA D:TYR253 4.1 16.9 1.0
N B:GLY254 4.6 20.6 1.0
N C:GLY254 4.6 23.2 1.0
N A:GLY254 4.6 20.8 1.0
N D:GLY254 4.6 22.2 1.0
K A:K1005 4.6 92.6 1.0
N C:TYR253 4.6 20.3 1.0
N B:TYR253 4.6 16.1 1.0
N A:TYR253 4.6 14.8 1.0
N D:TYR253 4.6 16.9 1.0
CA C:GLY254 4.9 23.2 1.0
CA B:GLY254 4.9 20.6 1.0
CA A:GLY254 4.9 20.8 1.0
CA D:GLY254 4.9 22.2 1.0

Potassium binding site 2 out of 5 in 6cnm

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Potassium binding site 2 out of 5 in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K1002

b:31.8
occ:1.00
 O A:GLY252 2.7 13.4 1.0
O C:GLY252 2.7 27.7 1.0
O B:GLY252 2.7 12.7 1.0
O D:GLY252 2.7 14.7 1.0
O D:ILE251 2.7 12.8 1.0
O B:ILE251 2.7 13.3 1.0
O A:ILE251 2.7 7.0 1.0
O C:ILE251 2.7 51.2 1.0
K A:K1003 3.2 51.2 1.0
K A:K1001 3.3 51.2 1.0
C D:GLY252 3.7 14.7 1.0
C A:GLY252 3.7 13.4 1.0
C C:GLY252 3.7 27.7 1.0
C B:GLY252 3.7 12.7 1.0
C C:ILE251 3.9 51.2 1.0
C D:ILE251 3.9 12.8 1.0
C B:ILE251 3.9 13.3 1.0
C A:ILE251 3.9 7.0 1.0
CA D:GLY252 4.1 14.7 1.0
CA A:GLY252 4.1 13.4 1.0
CA C:GLY252 4.1 27.7 1.0
CA B:GLY252 4.1 12.7 1.0
N D:GLY252 4.5 14.7 1.0
N A:GLY252 4.5 13.4 1.0
N C:GLY252 4.5 27.7 1.0
N B:GLY252 4.5 12.7 1.0
N A:TYR253 4.7 14.8 1.0
N C:TYR253 4.7 20.3 1.0
N D:TYR253 4.7 16.9 1.0
N B:TYR253 4.7 16.1 1.0

Potassium binding site 3 out of 5 in 6cnm

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Potassium binding site 3 out of 5 in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K1003

b:51.2
occ:1.00
 O D:ILE251 2.8 12.8 1.0
O A:ILE251 2.8 7.0 1.0
O C:ILE251 2.8 51.2 1.0
O B:ILE251 2.8 13.3 1.0
O B:THR250 2.9 11.2 1.0
O A:THR250 2.9 12.1 1.0
O C:THR250 2.9 21.5 1.0
O D:THR250 2.9 13.9 1.0
K A:K1002 3.2 31.8 1.0
K A:K1004 3.4 26.8 1.0
C D:ILE251 3.7 12.8 1.0
C C:ILE251 3.7 51.2 1.0
C A:ILE251 3.7 7.0 1.0
C B:ILE251 3.7 13.3 1.0
C B:THR250 4.0 11.2 1.0
C A:THR250 4.0 12.1 1.0
C C:THR250 4.0 21.5 1.0
C D:THR250 4.0 13.9 1.0
CA D:ILE251 4.1 12.8 1.0
CA C:ILE251 4.1 51.2 1.0
CA A:ILE251 4.1 7.0 1.0
CA B:ILE251 4.1 13.3 1.0
N D:ILE251 4.5 12.8 1.0
N C:ILE251 4.5 51.2 1.0
N B:ILE251 4.5 13.3 1.0
N A:ILE251 4.5 7.0 1.0
N D:GLY252 4.8 14.7 1.0
N A:GLY252 4.8 13.4 1.0
N C:GLY252 4.8 27.7 1.0
N B:GLY252 4.8 12.7 1.0

Potassium binding site 4 out of 5 in 6cnm

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Potassium binding site 4 out of 5 in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 4 of Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K1004

b:26.8
occ:1.00
 O D:THR250 3.1 13.9 1.0
O A:THR250 3.1 12.1 1.0
O C:THR250 3.1 21.5 1.0
O B:THR250 3.1 11.2 1.0
OG1 B:THR250 3.1 11.2 1.0
OG1 A:THR250 3.1 12.1 1.0
OG1 C:THR250 3.1 21.5 1.0
OG1 D:THR250 3.1 13.9 1.0
K A:K1003 3.4 51.2 1.0
CB B:THR250 3.8 11.2 1.0
CB A:THR250 3.8 12.1 1.0
CB C:THR250 3.8 21.5 1.0
CB D:THR250 3.8 13.9 1.0
C A:THR250 4.1 12.1 1.0
C C:THR250 4.1 21.5 1.0
C B:THR250 4.1 11.2 1.0
C D:THR250 4.1 13.9 1.0
CA B:THR250 4.6 11.2 1.0
CA A:THR250 4.6 12.1 1.0
CA C:THR250 4.6 21.5 1.0
CA D:THR250 4.6 13.9 1.0
CG2 B:THR250 5.0 11.2 1.0
CG2 A:THR250 5.0 12.1 1.0
CG2 D:THR250 5.0 13.9 1.0
CG2 C:THR250 5.0 21.5 1.0

Potassium binding site 5 out of 5 in 6cnm

Go back to Potassium Binding Sites List in 6cnm
Potassium binding site 5 out of 5 in the Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 5 of Cryo-Em Structure of the Human SK4/Calmodulin Channel Complex within 5.0Å range:
probe atom residue distance (Å) B Occ
A:K1005

b:92.6
occ:1.00
 O D:TYR253 4.1 16.9 1.0
O B:TYR253 4.2 16.1 1.0
O C:TYR253 4.2 20.3 1.0
O A:TYR253 4.2 14.8 1.0
K A:K1001 4.6 51.2 1.0
O B:GLY254 4.7 20.6 1.0
O A:GLY254 4.7 20.8 1.0
O C:GLY254 4.7 23.2 1.0
O D:GLY254 4.7 22.2 1.0

Reference:

C.H.Lee, R.Mackinnon. Activation Mechanism of A Human Sk-Calmodulin Channel Complex Elucidated By Cryo-Em Structures. Science V. 360 508 2018.
ISSN: ESSN 1095-9203
PubMed: 29724949
DOI: 10.1126/SCIENCE.AAS9466
Page generated: Sat Aug 9 10:34:00 2025

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