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Calcium in PDB 9eio: Cryo-Em Structure of the Mutant KCA2.2_F244S Channel

Other elements in 9eio:

The structure of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel also contains other interesting chemical elements:

Potassium (K) 4 atoms

Calcium Binding Sites:

The binding sites of Calcium atom in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel (pdb code 9eio). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 8 binding sites of Calcium where determined in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel, PDB code: 9eio:
Jump to Calcium binding site number: 1; 2; 3; 4; 5; 6; 7; 8;

Calcium binding site 1 out of 8 in 9eio

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Calcium binding site 1 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
E:Ca201

b:32.0
occ:1.00
 O E:THR26 2.4 39.4 1.0
OD1 E:ASP20 2.4 36.3 1.0
OD1 E:ASP22 2.4 38.0 1.0
OD1 E:ASP24 2.5 37.6 1.0
OE2 E:GLU31 2.7 39.5 1.0
OD2 E:ASP22 2.8 38.0 1.0
CG E:ASP22 3.0 38.0 1.0
CG E:ASP20 3.3 36.3 1.0
CG E:ASP24 3.5 37.6 1.0
OD2 E:ASP20 3.6 36.3 1.0
C E:THR26 3.6 39.4 1.0
O E:ASP24 3.7 37.6 1.0
CD E:GLU31 3.7 39.5 1.0
OD2 E:ASP24 3.9 37.6 1.0
OG1 E:THR26 3.9 39.4 1.0
N E:THR26 4.3 39.4 1.0
CG E:GLU31 4.4 39.5 1.0
CA E:THR26 4.4 39.4 1.0
CB E:ASP22 4.5 38.0 1.0
N E:ILE27 4.5 37.8 1.0
OE1 E:GLU31 4.6 39.5 1.0
C E:ASP24 4.6 37.6 1.0
CA E:ILE27 4.6 37.8 1.0
CB E:ASP20 4.7 36.3 1.0
CB E:ASP24 4.8 37.6 1.0
CB E:THR26 4.8 39.4 1.0

Calcium binding site 2 out of 8 in 9eio

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Calcium binding site 2 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
E:Ca202

b:33.3
occ:1.00
 OE2 E:GLU67 2.4 35.6 1.0
OD1 E:ASP58 2.4 33.0 1.0
O E:THR62 2.4 39.9 1.0
OE1 E:GLU67 2.5 35.6 1.0
CD E:GLU67 2.8 35.6 1.0
CG E:ASP58 3.3 33.0 1.0
CB E:ASP56 3.5 36.1 1.0
OD2 E:ASP58 3.5 33.0 1.0
C E:THR62 3.6 39.9 1.0
CA E:ASP56 4.0 36.1 1.0
CA E:ILE63 4.2 37.5 1.0
N E:ALA57 4.2 29.3 1.0
CG E:GLU67 4.3 35.6 1.0
N E:ILE63 4.3 37.5 1.0
N E:ASP58 4.4 33.0 1.0
N E:THR62 4.5 39.9 1.0
CB E:ASP58 4.6 33.0 1.0
C E:ASP56 4.6 36.1 1.0
CA E:THR62 4.7 39.9 1.0
N E:ASN60 4.7 40.0 1.0
CG1 E:ILE63 4.7 37.5 1.0
CB E:ASN60 4.8 40.0 1.0
CG E:ASP56 4.8 36.1 1.0
N E:GLY59 4.8 34.5 1.0
OG1 E:THR62 4.9 39.9 1.0
CB E:GLU67 4.9 35.6 1.0
CA E:ASP58 4.9 33.0 1.0
N E:ASP64 5.0 38.0 1.0

Calcium binding site 3 out of 8 in 9eio

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Calcium binding site 3 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 3 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
F:Ca201

b:28.5
occ:1.00
 OD1 F:ASP24 2.4 32.9 1.0
O F:THR26 2.5 37.4 1.0
OD1 F:ASP20 2.6 31.0 1.0
O F:ASP20 3.1 31.0 1.0
OD1 F:ASP22 3.2 30.0 1.0
CG F:ASP24 3.3 32.9 1.0
OD2 F:ASP24 3.6 32.9 1.0
C F:THR26 3.6 37.4 1.0
CG F:ASP20 3.8 31.0 1.0
CA F:ILE27 4.0 37.5 1.0
C F:ASP20 4.0 31.0 1.0
CA F:ASP20 4.2 31.0 1.0
N F:ILE27 4.2 37.5 1.0
CG F:ASP22 4.2 30.0 1.0
CD F:GLU31 4.3 37.7 1.0
CG F:GLU31 4.3 37.7 1.0
OE2 F:GLU31 4.4 37.7 1.0
N F:ASP24 4.5 32.9 1.0
OD2 F:ASP22 4.5 30.0 1.0
N F:THR26 4.5 37.4 1.0
CB F:ASP20 4.6 31.0 1.0
OD2 F:ASP20 4.7 31.0 1.0
OE1 F:GLU31 4.7 37.7 1.0
CA F:THR26 4.7 37.4 1.0
CB F:ASP24 4.7 32.9 1.0
N F:GLY23 4.8 31.8 1.0
N F:THR28 4.8 38.2 1.0
CB F:ILE27 4.9 37.5 1.0
C F:ILE27 4.9 37.5 1.0

Calcium binding site 4 out of 8 in 9eio

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Calcium binding site 4 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 4 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
F:Ca202

b:27.8
occ:1.00
 OD1 F:ASP58 2.4 35.5 1.0
OE2 F:GLU67 2.5 36.0 1.0
OE1 F:GLU67 2.5 36.0 1.0
O F:THR62 2.6 38.1 1.0
CD F:GLU67 2.8 36.0 1.0
CB F:ASP56 2.9 37.1 1.0
OD2 F:ASP56 3.0 37.1 1.0
OD2 F:ASP58 3.1 35.5 1.0
CG F:ASP58 3.1 35.5 1.0
CG F:ASP56 3.3 37.1 1.0
C F:THR62 3.8 38.1 1.0
CA F:ILE63 4.2 37.1 1.0
CA F:ASP56 4.3 37.1 1.0
CG F:GLU67 4.3 36.0 1.0
N F:ILE63 4.4 37.1 1.0
CB F:ASP58 4.5 35.5 1.0
OD1 F:ASP56 4.6 37.1 1.0
N F:ASP58 4.7 35.5 1.0
CG1 F:ILE63 4.8 37.1 1.0
N F:ASN60 4.8 38.0 1.0
N F:THR62 4.8 38.1 1.0
N F:ASP64 4.8 38.8 1.0
N F:GLY59 4.8 33.6 1.0
CB F:ASN60 4.9 38.0 1.0
N F:ALA57 4.9 33.1 1.0
C F:ASP56 4.9 37.1 1.0
CA F:THR62 4.9 38.1 1.0

Calcium binding site 5 out of 8 in 9eio

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Calcium binding site 5 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 5 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
G:Ca201

b:32.5
occ:1.00
 OD1 G:ASP20 2.3 35.3 1.0
OD1 G:ASP24 2.4 43.2 1.0
O G:THR26 2.4 40.4 1.0
CG2 G:THR26 2.8 40.4 1.0
OE2 G:GLU31 3.0 37.9 1.0
CG G:ASP24 3.2 43.2 1.0
CG G:ASP20 3.2 35.3 1.0
OD1 G:ASP22 3.3 38.9 1.0
OD2 G:ASP20 3.3 35.3 1.0
OD2 G:ASP24 3.4 43.2 1.0
C G:THR26 3.4 40.4 1.0
O G:ASP22 3.6 38.9 1.0
CD G:GLU31 3.6 37.9 1.0
N G:THR26 3.8 40.4 1.0
CA G:THR26 3.9 40.4 1.0
CB G:THR26 3.9 40.4 1.0
CG G:GLU31 4.1 37.9 1.0
CG G:ASP22 4.2 38.9 1.0
OE1 G:GLU31 4.4 37.9 1.0
CB G:ASP24 4.6 43.2 1.0
N G:ILE27 4.6 40.4 1.0
N G:ASP24 4.6 43.2 1.0
OD2 G:ASP22 4.6 38.9 1.0
CB G:ASP20 4.6 35.3 1.0
C G:ASP22 4.7 38.9 1.0
OG1 G:THR26 4.7 40.4 1.0
N G:GLY25 4.8 37.7 1.0
CA G:ASP24 5.0 43.2 1.0
C G:ASP24 5.0 43.2 1.0

Calcium binding site 6 out of 8 in 9eio

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Calcium binding site 6 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 6 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
G:Ca202

b:28.9
occ:1.00
 OE1 G:GLU67 2.4 30.8 1.0
OD1 G:ASP58 2.4 33.2 1.0
O G:THR62 2.5 40.0 1.0
OE2 G:GLU67 2.9 30.8 1.0
CD G:GLU67 3.0 30.8 1.0
CG G:ASP58 3.5 33.2 1.0
N G:ALA57 3.6 27.9 1.0
C G:THR62 3.6 40.0 1.0
CA G:ASP56 3.7 32.6 1.0
CB G:ASP56 3.9 32.6 1.0
N G:ASP58 4.0 33.2 1.0
OD2 G:ASP58 4.0 33.2 1.0
C G:ASP56 4.2 32.6 1.0
CA G:ILE63 4.2 36.0 1.0
N G:ILE63 4.3 36.0 1.0
CG G:GLU67 4.5 30.8 1.0
N G:THR62 4.5 40.0 1.0
N G:GLY59 4.5 36.0 1.0
CA G:ALA57 4.6 27.9 1.0
CB G:ASP58 4.6 33.2 1.0
CA G:THR62 4.7 40.0 1.0
CG1 G:ILE63 4.7 36.0 1.0
CA G:ASP58 4.8 33.2 1.0
C G:ALA57 4.8 27.9 1.0
O G:VAL55 4.9 32.8 1.0
N G:ASP56 4.9 32.6 1.0
OG1 G:THR62 5.0 40.0 1.0
N G:ASN60 5.0 39.3 1.0
N G:ASP64 5.0 35.1 1.0

Calcium binding site 7 out of 8 in 9eio

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Calcium binding site 7 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 7 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
H:Ca201

b:28.1
occ:1.00
 OD1 H:ASP20 2.4 33.8 1.0
OD2 H:ASP24 2.4 30.5 1.0
O H:THR26 2.4 34.3 1.0
OD1 H:ASP24 2.6 30.5 1.0
CG H:ASP24 2.8 30.5 1.0
CG H:ASP20 3.2 33.8 1.0
OD1 H:ASP22 3.4 32.9 1.0
OD2 H:ASP20 3.4 33.8 1.0
CG2 H:THR28 3.4 35.2 1.0
C H:THR26 3.6 34.3 1.0
OG1 H:THR26 3.8 34.3 1.0
OD2 H:ASP22 3.9 32.9 1.0
CG H:ASP22 4.0 32.9 1.0
CB H:ASP24 4.2 30.5 1.0
N H:THR28 4.5 35.2 1.0
N H:THR26 4.5 34.3 1.0
CA H:THR26 4.5 34.3 1.0
N H:ILE27 4.5 35.4 1.0
O H:ASP24 4.5 30.5 1.0
CB H:THR28 4.6 35.2 1.0
OG1 H:THR28 4.6 35.2 1.0
CA H:ILE27 4.6 35.4 1.0
CB H:ASP20 4.6 33.8 1.0
CB H:THR26 4.8 34.3 1.0
C H:ASP24 4.8 30.5 1.0
C H:ILE27 4.9 35.4 1.0
OE1 H:GLU31 5.0 35.3 1.0

Calcium binding site 8 out of 8 in 9eio

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Calcium binding site 8 out of 8 in the Cryo-Em Structure of the Mutant KCA2.2_F244S Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 8 of Cryo-Em Structure of the Mutant KCA2.2_F244S Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
H:Ca202

b:31.6
occ:1.00
 OE1 H:GLU67 2.4 36.9 1.0
OD1 H:ASP56 2.4 41.1 1.0
OD1 H:ASP58 2.4 35.9 1.0
O H:THR62 2.5 37.3 1.0
OE2 H:GLU67 2.6 36.9 1.0
CD H:GLU67 2.8 36.9 1.0
CG H:ASP58 3.4 35.9 1.0
CG H:ASP56 3.5 41.1 1.0
OD2 H:ASP58 3.7 35.9 1.0
C H:THR62 3.7 37.3 1.0
N H:ALA57 3.9 34.5 1.0
N H:ASP58 4.1 35.9 1.0
CA H:ASP56 4.2 41.1 1.0
OD2 H:ASP56 4.3 41.1 1.0
CA H:ILE63 4.3 39.7 1.0
CG H:GLU67 4.3 36.9 1.0
CB H:ASP56 4.4 41.1 1.0
N H:ILE63 4.5 39.7 1.0
CB H:ASP58 4.6 35.9 1.0
C H:ASP56 4.6 41.1 1.0
N H:THR62 4.7 37.3 1.0
CA H:ASP58 4.8 35.9 1.0
N H:ASP64 4.8 40.9 1.0
CA H:THR62 4.8 37.3 1.0
N H:GLY59 4.9 35.9 1.0
N H:ASN60 4.9 38.1 1.0
CA H:ALA57 4.9 34.5 1.0
CB H:ASN60 5.0 38.1 1.0
OG1 H:THR62 5.0 37.3 1.0
C H:ALA57 5.0 34.5 1.0

Reference:

Y.W.Nam, D.Im, A.Santa Cruz Garcia, M.L.Tringides, H.M.Nguyen, Y.Liu, R.Orfali, A.Ramanishka, G.Pintilie, C.C.Su, M.Cui, D.E.Logothetis, E.W.Yu, H.Wulff, K.G.Chandy, M.Zhang. Cryo-Em Structures of the Small-Conductance CA2+-Activated KCA2.2 Channel Nat Commun 2025.
ISSN: ESSN 2041-1723
Page generated: Thu Jul 10 09:32:32 2025

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