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Calcium in PDB 5vms: Cryoem Structure of Xenopus KCNQ1 Channel

Calcium Binding Sites:

The binding sites of Calcium atom in the Cryoem Structure of Xenopus KCNQ1 Channel (pdb code 5vms). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 3 binding sites of Calcium where determined in the Cryoem Structure of Xenopus KCNQ1 Channel, PDB code: 5vms:
Jump to Calcium binding site number: 1; 2; 3;

Calcium binding site 1 out of 3 in 5vms

Go back to Calcium Binding Sites List in 5vms
Calcium binding site 1 out of 3 in the Cryoem Structure of Xenopus KCNQ1 Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Cryoem Structure of Xenopus KCNQ1 Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
B:Ca201

b:0.8
occ:1.00
O B:ASP21 2.9 0.6 1.0
O B:THR27 2.9 0.5 1.0
CB B:ASP23 3.5 0.0 1.0
C B:THR27 3.7 0.7 1.0
C B:ASP21 3.8 0.6 1.0
N B:THR27 4.0 0.2 1.0
N B:ASP23 4.2 0.1 1.0
CB B:ASP21 4.2 0.2 1.0
CA B:ASP21 4.3 0.3 1.0
CA B:ASP23 4.3 0.6 1.0
N B:ILE28 4.4 0.9 1.0
CA B:THR27 4.4 1.0 1.0
CA B:ILE28 4.4 0.8 1.0
O B:ASP23 4.5 0.8 1.0
OG1 B:THR27 4.5 0.4 1.0
N B:GLY26 4.5 0.4 1.0
CB B:ASP25 4.6 0.2 1.0
C B:ASP23 4.6 0.3 1.0
C B:LYS22 4.7 0.7 1.0
N B:LYS22 4.8 0.6 1.0
N B:THR29 4.9 0.8 1.0
C B:GLY26 5.0 0.2 1.0

Calcium binding site 2 out of 3 in 5vms

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Calcium binding site 2 out of 3 in the Cryoem Structure of Xenopus KCNQ1 Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Cryoem Structure of Xenopus KCNQ1 Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
B:Ca202

b:0.3
occ:0.83
O B:THR63 2.2 0.1 1.0
OD1 B:ASN61 2.7 0.6 1.0
C B:THR63 3.5 1.0 1.0
CB B:ASP59 3.6 0.4 1.0
N B:ASP65 3.6 0.2 1.0
CG B:ASN61 3.7 1.0 1.0
N B:ASP59 4.0 0.3 1.0
ND2 B:ASN61 4.1 0.7 1.0
CB B:ASP65 4.1 0.2 1.0
CA B:ILE64 4.1 0.8 1.0
N B:ILE64 4.2 0.7 1.0
OG1 B:THR63 4.3 0.9 1.0
CA B:ASP59 4.3 0.3 1.0
C B:ILE64 4.3 0.9 1.0
CB B:ASP57 4.3 1.0 1.0
N B:GLY60 4.4 0.2 1.0
N B:ALA58 4.4 0.3 1.0
CA B:ASP65 4.5 0.5 1.0
CA B:THR63 4.5 0.0 1.0
CA B:ASP57 4.6 0.9 1.0
N B:THR63 4.6 0.1 1.0
CB B:GLU68 4.7 0.3 1.0
N B:ASN61 4.7 0.7 1.0
C B:ASP59 4.8 0.1 1.0
C B:ASP57 4.8 0.2 1.0
CB B:THR63 4.9 0.9 1.0

Calcium binding site 3 out of 3 in 5vms

Go back to Calcium Binding Sites List in 5vms
Calcium binding site 3 out of 3 in the Cryoem Structure of Xenopus KCNQ1 Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 3 of Cryoem Structure of Xenopus KCNQ1 Channel within 5.0Å range:
probe atom residue distance (Å) B Occ
B:Ca203

b:0.9
occ:1.00
O B:ASP134 2.9 0.7 1.0
O B:GLN136 3.6 0.1 1.0
O B:ASP132 3.7 0.3 1.0
CB B:ASP132 3.8 0.6 1.0
C B:ASP134 3.9 0.8 1.0
CB B:ASP130 4.1 0.3 1.0
CA B:ASP130 4.1 0.8 1.0
CA B:VAL137 4.1 0.1 1.0
C B:GLN136 4.2 0.3 1.0
C B:ASP132 4.2 0.3 1.0
N B:ASP132 4.3 0.7 1.0
CA B:ASP132 4.3 0.3 1.0
CB B:ASP134 4.4 0.1 1.0
N B:ASP134 4.4 0.0 1.0
CA B:ASP134 4.5 0.4 1.0
N B:VAL137 4.5 0.2 1.0
CG2 B:VAL137 4.7 0.9 1.0
CB B:VAL137 4.7 0.1 1.0
C B:ASP130 4.8 0.5 1.0
N B:ILE131 4.8 0.0 1.0

Reference:

J.Sun, R.Mackinnon. Cryo-Em Structure of A KCNQ1/Cam Complex Reveals Insights Into Congenital Long Qt Syndrome. Cell V. 169 1042 2017.
ISSN: ISSN 1097-4172
PubMed: 28575668
DOI: 10.1016/J.CELL.2017.05.019
Page generated: Wed Jul 9 10:50:37 2025

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