Caesium in PDB 3atf: Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride)

The structure of Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride), PDB code: 3atf was solved by A.Inanobe, Y.Kurachi, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	47.98 / 2.95
Space group	I 4 2 2
Cell size a, b, c (Å), α, β, γ (°)	81.732, 81.732, 172.125, 90.00, 90.00, 90.00
R / Rfree (%)	22.3 / 28.1

The structure of Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride) also contains other interesting chemical elements:

Magnesium

(Mg)

1 atom

The binding sites of Caesium atom in the Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride) (pdb code 3atf). This binding sites where shown within 5.0 Angstroms radius around Caesium atom.
In total 2 binding sites of Caesium where determined in the Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride), PDB code: 3atf:
Jump to Caesium binding site number: 1; 2;

Caesium binding site 1 out of 2 in the Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride)


Mono view


Stereo pair view

A full contact list of Caesium with other atoms in the Cs binding site number 1 of Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride) within 5.0Å range: probe atom residue distance (Å) B Occ A:Cs1 b:0.8 occ:1.00 O A:HOH8 3.3 10.8 0.2 O A:TYR266 3.6 41.3 1.0 CE1 A:TYR266 3.7 45.7 1.0 CZ A:TYR266 3.8 46.2 1.0 CD1 A:TYR266 4.0 45.2 1.0 CE2 A:TYR266 4.1 44.9 1.0 OH A:TYR266 4.2 47.2 1.0 CG A:TYR266 4.3 43.5 1.0 CD2 A:TYR266 4.4 45.1 1.0 C A:TYR266 4.4 41.0 1.0

Caesium binding site 2 out of 2 in the Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride)


Mono view


Stereo pair view

A full contact list of Caesium with other atoms in the Cs binding site number 2 of Crystal Structure of the KIR3.2 Cytoplasmic Domain (Na+-Free Crystal Soaked in 200 Mm Cesium Chloride) within 5.0Å range: probe atom residue distance (Å) B Occ A:Cs2 b:0.3 occ:1.00 OG A:SER238 2.9 35.7 1.0 O A:GLU236 3.0 35.9 1.0 O A:GLU311 3.5 41.4 1.0 CB A:SER238 4.0 33.4 1.0 CG A:GLU236 4.1 40.6 1.0 C A:GLU236 4.2 36.1 1.0 C A:GLU311 4.2 39.6 1.0 N A:SER238 4.4 33.4 1.0 CB A:GLU311 4.4 37.6 1.0 CB A:GLU236 4.6 37.9 1.0 C A:ALA237 4.6 33.5 1.0 CA A:GLY312 4.7 41.1 1.0 OE2 A:GLU236 4.7 44.5 1.0 OE1 A:GLU311 4.8 40.5 1.0 N A:GLY312 4.8 40.2 1.0 CA A:SER238 4.8 33.7 1.0 CD A:GLU236 5.0 44.5 1.0 CA A:GLU236 5.0 37.4 1.0

A.Inanobe, A.Nakagawa, Y.Kurachi. Interactions of Cations with the Cytoplasmic Pores of Inward Rectifier K(+) Channels in the Closed State J.Biol.Chem. V. 286 41801 2011.
ISSN: ISSN 0021-9258
PubMed: 21982822
DOI: 10.1074/JBC.M111.278531