Potassium in PDB 4igr: Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302

The structure of Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302, PDB code: 4igr was solved by A.P.Larsen, R.Venskutonyte, M.Gajhede, J.S.Kastrup, K.Frydenvang, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	35.87 / 2.65
Space group	P 41 2 2
Cell size a, b, c (Å), α, β, γ (°)	68.180, 68.180, 126.520, 90.00, 90.00, 90.00
R / Rfree (%)	19.8 / 26.7

The structure of Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302 also contains other interesting chemical elements:

Chlorine

(Cl)

1 atom

The binding sites of Potassium atom in the Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302 (pdb code 4igr). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302, PDB code: 4igr:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in the Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302 within 5.0Å range: probe atom residue distance (Å) B Occ A:K902 b:56.4 occ:0.41 OG A:SER480 2.9 25.2 1.0 O A:HOH1005 3.1 22.9 1.0 O A:ASN433 3.1 91.2 1.0 CB A:SER480 3.9 24.6 1.0 N A:SER480 4.1 24.1 1.0 C A:ASN433 4.2 91.5 1.0 OD1 A:ASN433 4.2 90.2 1.0 C A:ARG434 4.4 51.4 1.0 O A:ARG434 4.4 50.9 1.0 CG A:ASN433 4.4 90.8 1.0 CA A:SER480 4.6 24.1 1.0 N A:SER435 4.6 46.8 1.0 ND2 A:ASN433 4.7 90.8 1.0 OG A:SER435 4.7 46.1 1.0 C A:PHE479 4.8 27.2 1.0 CA A:ARG434 4.8 52.4 1.0 N A:ARG434 4.9 52.4 1.0 CA A:PHE479 5.0 27.4 1.0 CA A:SER435 5.0 46.1 1.0

Potassium binding site 2 out of 2 in the Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Crystal Structure of the Kainate Receptor GLUK3 Ligand-Binding Domain in Complex with the Agonist ZA302 within 5.0Å range: probe atom residue distance (Å) B Occ A:K903 b:58.6 occ:1.00 O A:ARG454 3.0 44.8 1.0 O A:SER452 3.0 42.1 1.0 O A:HOH1050 3.9 52.1 1.0 C A:SER452 3.9 41.6 1.0 C A:ARG454 3.9 45.7 1.0 O A:HOH1032 4.1 38.5 1.0 CA A:THR455 4.4 32.3 1.0 C A:ASP453 4.4 51.9 1.0 O A:ASP453 4.4 53.0 1.0 N A:SER452 4.4 39.8 1.0 N A:THR455 4.5 32.8 1.0 CA A:SER452 4.5 40.3 1.0 CB A:SER452 4.6 39.7 1.0 N A:ARG454 4.7 46.1 1.0 N A:ASP453 4.7 50.2 1.0 CA A:ASP453 4.8 51.6 1.0 CA A:ARG454 4.9 46.5 1.0 N A:LEU456 5.0 28.4 1.0

Z.Assaf, A.P.Larsen, R.Venskutonyte, L.Han, B.Abrahamsen, B.Nielsen, M.Gajhede, J.S.Kastrup, A.A.Jensen, D.S.Pickering, K.Frydenvang, T.Gefflaut, L.Bunch. Chemoenzymatic Synthesis of New 2,4-Syn-Functionalized (S)-Glutamate Analogues and Structure-Activity Relationship Studies at Ionotropic Glutamate Receptors and Excitatory Amino Acid Transporters. J.Med.Chem. V. 56 1614 2013.
ISSN: ISSN 0022-2623
PubMed: 23414088
DOI: 10.1021/JM301433M