Potassium in PDB 4h1w: E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin

All present enzymatic activity of E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin:
3.6.3.8;

The structure of E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin, PDB code: 4h1w was solved by M.Bublitz, A.-M.L.Winther, J.Karlsen, J.V.Moller, J.B.Hansen, M.J.Buch-Pedersen, P.Nissen, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	43.01 / 3.10
Space group	P 21 2 21
Cell size a, b, c (Å), α, β, γ (°)	85.870, 139.540, 141.560, 90.00, 90.00, 90.00
R / Rfree (%)	19.1 / 24.7

The structure of E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin also contains other interesting chemical elements:

Magnesium

(Mg)

3 atoms

The binding sites of Potassium atom in the E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin (pdb code 4h1w). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total only one binding site of Potassium was determined in the E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin, PDB code: 4h1w:

Potassium binding site 1 out of 1 in the E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of E1 Structure of the (Sr) CA2+-Atpase in Complex with Sarcolipin within 5.0Å range: probe atom residue distance (Å) B Occ A:K1001 b:73.4 occ:1.00 O A:LEU711 2.6 55.9 1.0 O A:LYS712 2.6 59.8 1.0 OE1 A:GLU732 2.7 67.5 1.0 O A:HOH1108 2.7 54.8 1.0 O A:ALA714 2.7 71.2 1.0 O A:HOH1101 3.0 69.0 1.0 C A:LYS712 3.3 62.3 1.0 CD A:GLU732 3.6 70.1 1.0 C A:ALA714 3.6 61.3 1.0 C A:LEU711 3.7 58.6 1.0 CA A:LYS712 3.7 59.6 1.0 OE2 A:GLU732 3.8 72.3 1.0 N A:GLY717 3.8 74.4 1.0 O A:GLU715 3.9 52.5 1.0 N A:ALA714 4.0 54.2 1.0 C A:GLU715 4.1 54.9 1.0 N A:LYS712 4.2 58.0 1.0 CA A:ALA714 4.2 57.4 1.0 N A:LYS713 4.3 67.0 1.0 CA A:GLY717 4.4 73.8 1.0 C A:LYS713 4.5 55.9 1.0 CB A:ALA714 4.5 49.3 1.0 O A:ALA730 4.5 67.6 1.0 N A:ILE716 4.5 65.2 1.0 C A:ILE716 4.5 69.8 1.0 N A:GLU715 4.5 51.4 1.0 CA A:ILE716 4.6 68.0 1.0 CA A:GLU715 4.7 62.6 1.0 CA A:LYS713 4.9 56.8 1.0 CG A:GLU732 4.9 67.4 1.0 CA A:LEU711 5.0 57.7 1.0 O A:LYS713 5.0 64.0 1.0

A.M.Winther, M.Bublitz, J.L.Karlsen, J.V.Moller, J.B.Hansen, P.Nissen, M.J.Buch-Pedersen. The Sarcolipin-Bound Calcium Pump Stabilizes Calcium Sites Exposed to the Cytoplasm. Nature V. 495 265 2013.
ISSN: ISSN 0028-0836
PubMed: 23455424
DOI: 10.1038/NATURE11900