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Calcium in PDB 6b8m: Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak

Protein crystallography data

The structure of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak, PDB code: 6b8m was solved by A.Chang, D.L.Minor, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 14.94 / 2.30
Space group I 2 2 2
Cell size a, b, c (Å), α, β, γ (°) 108.243, 143.853, 164.272, 90.00, 90.00, 90.00
R / Rfree (%) 22.8 / 26.2

Calcium Binding Sites:

The binding sites of Calcium atom in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak (pdb code 6b8m). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 6 binding sites of Calcium where determined in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak, PDB code: 6b8m:
Jump to Calcium binding site number: 1; 2; 3; 4; 5; 6;

Calcium binding site 1 out of 6 in 6b8m

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Calcium binding site 1 out of 6 in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak within 5.0Å range:
probe atom residue distance (Å) B Occ
B:Ca201

b:56.4
occ:1.00
 OD1 B:ASP22 2.4 60.7 1.0
OE2 B:GLU31 2.4 52.6 1.0
OD1 B:ASP24 2.4 61.3 1.0
OD1 B:ASP20 2.5 48.5 1.0
O B:THR26 2.5 52.7 1.0
OE1 B:GLU31 2.7 52.9 1.0
CD B:GLU31 2.8 50.6 1.0
CG B:ASP22 3.1 64.1 1.0
OD2 B:ASP22 3.1 63.8 1.0
CG B:ASP24 3.4 55.8 1.0
C B:THR26 3.7 50.3 1.0
CG B:ASP20 3.7 51.3 1.0
OD2 B:ASP24 3.7 56.6 1.0
OG1 B:THR26 3.8 57.5 1.0
N B:THR26 4.2 47.9 1.0
CG B:GLU31 4.2 43.0 1.0
CA B:ASP20 4.2 44.9 1.0
CB B:ASP20 4.4 52.0 1.0
CA B:THR26 4.4 45.6 1.0
N B:ASP24 4.5 54.5 1.0
CB B:ASP22 4.5 52.7 1.0
CB B:ASP24 4.6 49.0 1.0
OD2 B:ASP20 4.6 50.9 1.0
N B:ILE27 4.7 47.8 1.0
N B:ASP22 4.7 58.0 1.0
CB B:THR26 4.7 53.8 1.0
C B:ASP20 4.8 48.5 1.0
CA B:ILE27 4.8 45.0 1.0
N B:GLY23 4.9 57.8 1.0
N B:LYS21 4.9 52.4 1.0
N B:GLY25 4.9 48.7 1.0
CA B:ASP24 5.0 49.9 1.0

Calcium binding site 2 out of 6 in 6b8m

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Calcium binding site 2 out of 6 in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak within 5.0Å range:
probe atom residue distance (Å) B Occ
D:Ca201

b:55.3
occ:1.00
 OD1 D:ASP24 2.4 56.9 1.0
OE2 D:GLU31 2.4 55.2 1.0
O D:THR26 2.6 45.2 1.0
OE1 D:GLU31 2.6 48.0 1.0
OD1 D:ASP20 2.6 42.5 1.0
OD1 D:ASP22 2.6 58.3 1.0
CD D:GLU31 2.8 53.9 1.0
CG D:ASP24 3.2 51.3 1.0
CG D:ASP22 3.3 60.0 1.0
OD2 D:ASP22 3.3 62.6 1.0
OD2 D:ASP24 3.4 51.8 1.0
OG1 D:THR26 3.6 53.0 1.0
C D:THR26 3.7 47.2 1.0
CG D:ASP20 3.8 48.8 1.0
O D:HOH315 4.1 51.8 1.0
CG D:GLU31 4.2 44.0 1.0
N D:THR26 4.4 48.5 1.0
CB D:ASP24 4.4 47.5 1.0
CA D:THR26 4.4 48.6 1.0
CA D:ASP20 4.6 45.7 1.0
OD2 D:ASP20 4.6 55.1 1.0
N D:ASP24 4.6 48.9 1.0
CB D:THR26 4.6 47.2 1.0
N D:ILE27 4.6 43.4 1.0
CB D:ASP20 4.6 47.8 1.0
CG2 D:THR28 4.7 43.7 1.0
CA D:ILE27 4.8 39.7 1.0
CB D:ASP22 4.8 42.8 1.0
N D:THR28 4.8 45.8 1.0
OG1 D:THR28 4.9 52.0 1.0
N D:ASP22 4.9 51.4 1.0
CA D:ASP24 5.0 47.7 1.0

Calcium binding site 3 out of 6 in 6b8m

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Calcium binding site 3 out of 6 in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 3 of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak within 5.0Å range:
probe atom residue distance (Å) B Occ
F:Ca201

b:62.2
occ:1.00
 OD1 F:ASP24 2.4 68.3 1.0
OE1 F:GLU31 2.4 66.5 1.0
OE2 F:GLU31 2.6 62.2 1.0
OD1 F:ASP22 2.6 56.0 1.0
O F:THR26 2.6 52.3 1.0
CD F:GLU31 2.7 60.1 1.0
OD1 F:ASP20 2.9 55.0 1.0
OD2 F:ASP22 3.1 68.0 1.0
CG F:ASP22 3.2 64.5 1.0
CG F:ASP24 3.2 60.6 1.0
OD2 F:ASP24 3.5 63.1 1.0
C F:THR26 3.7 56.5 1.0
OG1 F:THR26 3.8 64.0 1.0
CG F:ASP20 4.1 59.5 1.0
CG F:GLU31 4.1 57.0 1.0
CG2 F:THR28 4.4 45.6 1.0
N F:THR26 4.4 54.0 1.0
CB F:ASP24 4.5 60.1 1.0
CA F:THR26 4.5 55.2 1.0
CA F:ASP20 4.5 56.6 1.0
O F:HOH312 4.5 53.2 1.0
N F:ILE27 4.6 51.9 1.0
N F:ASP24 4.7 60.9 1.0
CB F:ASP22 4.7 63.7 1.0
N F:THR28 4.7 56.9 1.0
CB F:THR26 4.7 60.1 1.0
CA F:ILE27 4.8 50.1 1.0
N F:ASP22 4.8 53.9 1.0
CB F:ASP20 4.8 54.0 1.0
OG1 F:THR28 4.9 49.4 1.0
N F:LYS21 4.9 53.8 1.0
C F:ASP20 5.0 57.5 1.0
OD2 F:ASP20 5.0 53.7 1.0

Calcium binding site 4 out of 6 in 6b8m

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Calcium binding site 4 out of 6 in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 4 of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak within 5.0Å range:
probe atom residue distance (Å) B Occ
F:Ca202

b:86.5
occ:1.00
 OD1 F:ASP58 2.5 88.5 1.0
O F:HOH301 2.8 64.4 1.0
OE1 F:GLU67 2.9 60.0 1.0
OD1 F:ASN60 3.1 84.2 1.0
ND2 F:ASN60 3.2 83.4 1.0
OD2 F:ASP64 3.2 65.6 1.0
OG1 F:THR62 3.3 57.0 1.0
O F:THR62 3.3 51.6 1.0
CG F:ASP58 3.5 86.6 1.0
CG F:ASN60 3.5 83.8 1.0
N F:ASP64 3.6 48.7 1.0
C F:THR62 3.7 56.4 1.0
CG F:ASP64 3.8 59.8 1.0
OD2 F:ASP58 3.8 88.8 1.0
CB F:ASP64 3.9 58.3 1.0
OD2 F:ASP56 3.9 65.7 1.0
CD F:GLU67 4.1 58.4 1.0
C F:ILE63 4.1 50.6 1.0
N F:ILE63 4.2 53.7 1.0
CA F:ILE63 4.2 47.2 1.0
CA F:ASP64 4.3 49.8 1.0
CB F:THR62 4.4 62.5 1.0
CA F:THR62 4.5 61.1 1.0
OE2 F:GLU67 4.6 59.2 1.0
OD1 F:ASP64 4.7 54.6 1.0
N F:THR62 4.8 59.1 1.0
CB F:ASP58 4.8 75.6 1.0
CG F:ASP56 4.9 65.1 1.0
CG2 F:THR26 5.0 51.4 1.0
CB F:ASN60 5.0 83.2 1.0

Calcium binding site 5 out of 6 in 6b8m

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Calcium binding site 5 out of 6 in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 5 of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak within 5.0Å range:
probe atom residue distance (Å) B Occ
H:Ca201

b:57.3
occ:1.00
 OD1 H:ASP24 2.4 66.1 1.0
OD2 H:ASP20 2.5 45.2 1.0
OE1 H:GLU31 2.6 52.5 1.0
O H:THR26 2.6 54.5 1.0
OE2 H:GLU31 2.7 51.3 1.0
OD2 H:ASP22 2.8 63.3 1.0
CD H:GLU31 2.9 57.0 1.0
CG H:ASP24 3.2 59.7 1.0
OD1 H:ASP22 3.3 64.6 1.0
CG H:ASP22 3.4 64.2 1.0
OD2 H:ASP24 3.5 63.2 1.0
CG H:ASP20 3.7 53.4 1.0
C H:THR26 3.8 57.3 1.0
OG1 H:THR26 3.9 66.5 1.0
O H:HOH304 4.2 47.6 1.0
CG H:GLU31 4.2 49.4 1.0
CG2 H:THR28 4.3 48.2 1.0
CB H:ASP24 4.4 52.4 1.0
N H:THR26 4.5 56.8 1.0
OD1 H:ASP20 4.5 56.2 1.0
CB H:ASP20 4.5 49.7 1.0
CA H:THR26 4.6 58.1 1.0
CA H:ASP20 4.6 56.3 1.0
OG1 H:THR28 4.7 53.9 1.0
N H:THR28 4.7 52.4 1.0
N H:ASP24 4.7 59.0 1.0
N H:ILE27 4.8 52.5 1.0
CB H:THR26 4.8 57.9 1.0
CB H:ASP22 4.9 57.9 1.0
CA H:ILE27 4.9 48.9 1.0

Calcium binding site 6 out of 6 in 6b8m

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Calcium binding site 6 out of 6 in the Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 6 of Crystal Structure of the CA2+/Cam:KV7.4 (KCNQ4) Ab Domain Complex, 1 Mm CACL2 Soak within 5.0Å range:
probe atom residue distance (Å) B Occ
H:Ca202

b:95.2
occ:1.00
 OD1 H:ASP56 2.7 66.1 1.0
OD1 H:ASN60 2.7 73.2 1.0
OE1 H:GLU67 2.8 53.5 1.0
O H:THR62 3.1 55.0 1.0
OE2 H:GLU67 3.3 66.8 1.0
OD1 H:ASP58 3.3 74.7 1.0
CD H:GLU67 3.5 57.1 1.0
CG H:ASN60 3.6 72.9 1.0
OG1 H:THR62 3.6 68.9 1.0
C H:THR62 3.6 58.9 1.0
ND2 H:ASN60 3.7 68.8 1.0
CG H:ASP56 3.7 59.3 1.0
OD2 H:ASP64 3.8 61.8 1.0
CB H:ASP58 4.0 72.0 1.0
CG H:ASP58 4.0 79.0 1.0
N H:ASP64 4.0 43.4 1.0
N H:ILE63 4.1 54.7 1.0
CA H:ILE63 4.2 47.0 1.0
CG H:ASP64 4.4 54.8 1.0
N H:THR62 4.4 63.7 1.0
CA H:THR62 4.4 59.5 1.0
CA H:ASP56 4.5 53.8 1.0
CB H:ASP56 4.5 51.0 1.0
N H:ASP58 4.5 62.8 1.0
OD2 H:ASP56 4.5 64.4 1.0
C H:ILE63 4.6 53.9 1.0
CB H:THR62 4.6 57.6 1.0
CB H:ASP64 4.8 49.2 1.0
CA H:ASP58 4.8 66.7 1.0
N H:ALA57 4.9 63.1 1.0
CG H:GLU67 4.9 45.3 1.0

Reference:

A.Chang, F.Abderemane-Ali, G.L.Hura, N.D.Rossen, R.E.Gate, D.L.Minor. A Calmodulin C-Lobe Ca Neuron V. 97 836 2018.
ISSN: ISSN 1097-4199
PubMed: 29429937
DOI: 10.1016/J.NEURON.2018.01.035
Page generated: Wed Jul 9 12:38:59 2025

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