Calcium in PDB 7lja: Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation

The structure of Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation, PDB code: 7lja was solved by R.A.Rietmeijer, S.G.Brohawn, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	47.54 / 2.77
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	80.23, 136.53, 95.28, 90, 94.54, 90
R / Rfree (%)	20.1 / 24.3

The structure of Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation also contains other interesting chemical elements:

Thallium

(Tl)

8 atoms

The binding sites of Calcium atom in the Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation (pdb code 7lja). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 3 binding sites of Calcium where determined in the Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation, PDB code: 7lja:
Jump to Calcium binding site number: 1; 2; 3;

Calcium binding site 1 out of 3 in the Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca303 b:107.4 occ:1.00 OD1 A:ASP249 2.1 174.1 1.0 O A:SER112 2.3 96.0 1.0 OD2 A:ASP249 2.4 166.2 1.0 CG A:ASP249 2.5 168.5 1.0 OD2 A:ASP115 2.6 100.3 1.0 OD1 A:ASP115 2.7 99.5 1.0 OG A:SER118 2.7 77.6 1.0 CG A:ASP115 2.9 98.2 1.0 C A:SER112 3.5 96.0 1.0 CB A:SER118 3.8 76.7 1.0 CB A:ASP249 4.0 163.4 1.0 N A:SER112 4.1 114.0 1.0 CB A:ASP115 4.2 96.9 1.0 CA A:SER112 4.3 103.1 1.0 N A:ALA113 4.4 88.9 1.0 CA A:ALA113 4.5 85.7 1.0 N A:HIS111 4.6 144.8 1.0 C A:HIS111 4.6 126.1 1.0 N A:SER118 4.7 81.1 1.0 CA A:ASP249 4.7 167.2 1.0 CA A:SER118 4.8 77.9 1.0 CB A:SER112 4.9 103.1 1.0 CA A:HIS111 4.9 134.1 1.0 CB A:SER110 5.0 148.7 1.0

Calcium binding site 2 out of 3 in the Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca304 b:102.5 occ:1.00 O A:GLY98 2.8 67.2 1.0 O B:HOH403 3.2 56.3 1.0 O A:HIS111 3.2 122.7 1.0 OE2 B:GLU58 3.4 68.6 1.0 CB A:ASP100 3.5 86.3 1.0 CD B:GLU58 3.9 67.5 1.0 C A:GLY98 4.0 66.5 1.0 N A:ASP100 4.1 75.1 1.0 C A:ALA99 4.1 70.6 1.0 CG B:GLU58 4.2 64.8 1.0 OE1 B:GLN62 4.2 55.3 1.0 CG A:ASP100 4.3 91.0 1.0 CA A:ASP100 4.3 79.5 1.0 N A:ALA113 4.3 88.9 1.0 C A:HIS111 4.4 126.1 1.0 O A:ALA99 4.4 71.1 1.0 OD1 A:ASP100 4.5 94.6 1.0 CB A:ALA113 4.6 83.1 1.0 CA A:ALA99 4.6 68.6 1.0 OE1 B:GLU58 4.6 70.1 1.0 CA A:SER112 4.6 103.1 1.0 N A:ALA99 4.8 66.6 1.0 C A:SER112 4.9 96.0 1.0 N A:SER112 4.9 114.0 1.0 CA A:GLY98 5.0 66.0 1.0

Calcium binding site 3 out of 3 in the Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 3 of Human Traak K+ Channel Fheig Mutant A198E in A Tl+ Bound Conductive Conformation within 5.0Å range: probe atom residue distance (Å) B Occ G:Ca301 b:63.0 occ:1.00 OE1 G:GLU10 2.1 67.8 1.0 O G:HOH402 2.3 62.4 1.0 OE2 G:GLU10 2.7 73.6 1.0 CD G:GLU10 2.7 68.8 1.0 O G:LYS19 3.0 55.4 1.0 C G:LYS19 4.1 55.4 1.0 CG G:GLU10 4.2 65.4 1.0 N G:LYS19 4.6 58.4 1.0 CA G:LYS19 4.9 56.4 1.0 O G:HOH421 4.9 43.9 1.0

R.A.Rietmeijer, B.Sorum, B.Li, S.G.Brohawn. Physical Basis For Distinct Basal and Mechanically-Gated Activity of the Human K + Channel Traak Biorxiv 2021.
DOI: 10.1101/2021.06.04.447000