Caesium in PDB 3e8g: Crystal Structure of the the Open Nak Channel-Na+/CA2+ Complex

The structure of Crystal Structure of the the Open Nak Channel-Na+/CA2+ Complex, PDB code: 3e8g was solved by Y.Jiang, A.Alam, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	33.99 / 2.00
Space group	I 4
Cell size a, b, c (Å), α, β, γ (°)	67.990, 67.990, 89.168, 90.00, 90.00, 90.00
R / Rfree (%)	20.2 / 23.5

The structure of Crystal Structure of the the Open Nak Channel-Na+/CA2+ Complex also contains other interesting chemical elements:

Calcium	(Ca)	2 atoms
Sodium	(Na)	4 atoms

The binding sites of Caesium atom in the Crystal Structure of the the Open Nak Channel-Na+/CA2+ Complex (pdb code 3e8g). 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 the Open Nak Channel-Na+/CA2+ Complex, PDB code: 3e8g:
Jump to Caesium binding site number: 1; 2;

Caesium binding site 1 out of 2 in the Crystal Structure of the the Open Nak Channel-Na+/CA2+ Complex


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 the Open Nak Channel-Na+/CA2+ Complex within 5.0Å range: probe atom residue distance (Å) B Occ A:Cs1 b:26.9 occ:0.56 O A:THR63 2.8 31.0 1.0 NA A:NA8 2.9 56.4 0.2 O A:VAL64 3.1 26.6 1.0 C A:VAL64 3.6 29.0 1.0 C A:THR63 3.9 35.2 1.0 CA A:VAL64 4.1 30.2 1.0 N A:GLY65 4.4 24.1 1.0 N A:VAL64 4.5 28.3 1.0 NA A:NA5 4.7 36.5 0.2 CA A:GLY65 4.8 28.3 1.0

Caesium binding site 2 out of 2 in the Crystal Structure of the the Open Nak Channel-Na+/CA2+ Complex


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 the Open Nak Channel-Na+/CA2+ Complex within 5.0Å range: probe atom residue distance (Å) B Occ B:Cs2 b:40.9 occ:0.61 O B:THR63 2.8 38.4 1.0 NA B:NA7 3.0 61.1 0.2 O B:VAL64 3.0 39.9 1.0 C B:VAL64 3.6 39.3 1.0 C B:THR63 4.0 41.9 1.0 CA B:VAL64 4.2 40.8 1.0 N B:GLY65 4.4 42.5 1.0 N B:VAL64 4.6 41.1 1.0 CA B:GLY65 4.7 46.3 1.0 NA B:NA6 4.9 45.6 0.2

A.Alam, Y.Jiang. Structural Analysis of Ion Selectivity in the Nak Channel Nat.Struct.Mol.Biol. V. 16 35 2009.
ISSN: ISSN 1545-9993
PubMed: 19098915
DOI: 10.1038/NSMB.1537