Sodium in PDB 1su4: Crystal Structure of Calcium Atpase with Two Bound Calcium Ions

All present enzymatic activity of Crystal Structure of Calcium Atpase with Two Bound Calcium Ions:
3.6.3.8;

The structure of Crystal Structure of Calcium Atpase with Two Bound Calcium Ions, PDB code: 1su4 was solved by C.Toyoshima, M.Nakasako, H.Nomura, H.Ogawa, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	15.00 / 2.40
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	165.890, 64.340, 147.140, 90.00, 98.08, 90.00
R / Rfree (%)	24.6 / 28.3

The structure of Crystal Structure of Calcium Atpase with Two Bound Calcium Ions also contains other interesting chemical elements:

Calcium

(Ca)

2 atoms

The binding sites of Sodium atom in the Crystal Structure of Calcium Atpase with Two Bound Calcium Ions (pdb code 1su4). This binding sites where shown within 5.0 Angstroms radius around Sodium atom.
In total only one binding site of Sodium was determined in the Crystal Structure of Calcium Atpase with Two Bound Calcium Ions, PDB code: 1su4:

Sodium binding site 1 out of 1 in the Crystal Structure of Calcium Atpase with Two Bound Calcium Ions


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Crystal Structure of Calcium Atpase with Two Bound Calcium Ions within 5.0Å range: probe atom residue distance (Å) B Occ A:Na997 b:37.2 occ:1.00 OE1 A:GLU732 2.2 37.6 1.0 O A:ALA714 2.3 30.1 1.0 O A:LEU711 2.4 36.0 1.0 O A:LYS712 2.8 33.2 1.0 CD A:GLU732 2.9 37.7 1.0 OE2 A:GLU732 2.9 39.3 1.0 C A:LYS712 3.5 36.0 1.0 C A:ALA714 3.5 28.6 1.0 C A:LEU711 3.6 37.6 1.0 CA A:LYS712 3.7 40.4 1.0 N A:GLY717 3.8 28.5 1.0 O A:HOH2064 4.0 35.3 1.0 N A:LYS712 4.1 39.0 1.0 O A:GLU715 4.2 28.5 1.0 C A:GLU715 4.2 29.9 1.0 CA A:GLY717 4.2 25.3 1.0 N A:ALA714 4.3 35.1 1.0 CG A:GLU732 4.3 35.8 1.0 CA A:ALA714 4.3 31.0 1.0 O A:ALA730 4.4 38.5 1.0 N A:GLU715 4.5 27.4 1.0 C A:LYS713 4.5 36.0 1.0 N A:LYS713 4.6 32.0 1.0 N A:ILE716 4.6 28.0 1.0 CA A:GLU715 4.6 28.6 1.0 C A:ILE716 4.7 29.2 1.0 CB A:ALA714 4.7 29.4 1.0 O A:LYS713 4.7 37.7 1.0 CA A:LEU711 4.8 36.1 1.0 CA A:ILE716 4.9 29.6 1.0

C.Toyoshima, M.Nakasako, H.Nomura, H.Ogawa. Crystal Structure of the Calcium Pump of Sarcoplasmic Reticulum at 2.6 A Resolution Nature V. 405 647 2000.
ISSN: ISSN 0028-0836
PubMed: 10864315
DOI: 10.1038/35015017