Calcium in PDB 2ahz: K+ Complex of the Nak Channel

The structure of K+ Complex of the Nak Channel, PDB code: 2ahz was solved by N.Shi, S.Ye, A.Alam, L.Chen, Y.Jiang, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 2.80
Space group	C 2 2 21
Cell size a, b, c (Å), α, β, γ (°)	82.203, 85.541, 129.608, 90.00, 90.00, 90.00
R / Rfree (%)	24.1 / 28

The structure of K+ Complex of the Nak Channel also contains other interesting chemical elements:

Potassium

(K)

4 atoms

The binding sites of Calcium atom in the K+ Complex of the Nak Channel (pdb code 2ahz). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the K+ Complex of the Nak Channel, PDB code: 2ahz:

Calcium binding site 1 out of 1 in the K+ Complex of the Nak Channel


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of K+ Complex of the Nak Channel within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca114 b:89.9 occ:0.50 O B:GLY67 2.4 63.4 1.0 O A:GLY67 2.6 73.2 1.0 C B:GLY67 3.6 58.8 1.0 C A:GLY67 3.8 67.8 1.0 OD1 B:ASN68 4.1 76.3 1.0 OD1 A:ASN68 4.2 81.4 1.0 CA B:GLY67 4.5 69.0 1.0 CA B:ASN68 4.5 72.0 1.0 N B:ASN68 4.5 56.2 1.0 CA A:ASN68 4.6 79.4 1.0 N A:ASN68 4.7 73.1 1.0 CA A:GLY67 4.7 69.8 1.0 CG B:ASN68 4.9 73.8 1.0

N.Shi, S.Ye, A.Alam, L.Chen, Y.Jiang. Atomic Structure of A Na+- and K+-Conducting Channel. Nature V. 440 570 2006.
ISSN: ISSN 0028-0836
PubMed: 16467789
DOI: 10.1038/NATURE04508