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Sodium in the structure of Factor Xa - Cation (pdb 2bok)

The binding sites of Sodium atom in the structure of Factor Xa - Cation (pdb code 2bok). This binding sites where shown with 5.0 Angstroms radius around Sodium atom.
The 2bok structure was solved by M.MORGENTHALER, K.SCHAERER, R.PAULINI, U.OBST-SANDER, D.W.BANNER, D.SCHLATTER, J.BENZ, M.STIHLE, F.DIEDERICH, with X-Ray Crystallography technique, brief refinement statistics is given in the table below:
Resolution (A)51.0-1.6
Space groupP212121
a (A)48.840
b (A)71.670
c (A)72.750
alpha (°)90.00
beta (°)90.00
gamma (°)90.00
Rfactor (%)20.4
Rfree (%)23.7

Sodium Binding Sites:

Sodium binding site 1 out of 1 in 2bok

Sodium binding site 1 out of 1 in 2bok
Click to enlarge
stereopicture of Sodium binding site 1 out of 1 in 2bok
Click to enlarge
Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Sodium in the PDB 2bok. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Sodium atom, shown by VdW sphere
Residues shown as a stick model or VDW spheres: A: Tyr185, A: Asp185A, A: Thr185B, A: Lys186, A: Ala221, A: Arg222, A: Lys223, A: Gly223A, A: Lys224, A: Tyr225, A: Hoh2170, A: Hoh2176, A: Hoh2198,

conact list:

AtomAtomDistance (A)
NaO A:Tyr1852.26
NaN A:Tyr1854.89
NaC A:Tyr1853.42
NaCA A:Tyr1854.62
NaO A:Asp185A2.57
NaN A:Asp185A4.07
NaC A:Asp185A3.34
NaCA A:Asp185A3.83
NaN A:Thr185B4.33
NaCA A:Thr185B4.76
NaO A:Lys1864.62
NaO A:Ala2214.43
NaC A:Ala2214.27
NaCA A:Ala2214.79
NaO A:Arg2222.26
NaN A:Arg2224.25
NaC A:Arg2223.40
NaCA A:Arg2224.44
NaN A:Lys2234.19
NaC A:Lys2234.36
NaCA A:Lys2234.17
NaN A:Gly223A4.06
NaC A:Gly223A4.63
NaCA A:Gly223A4.83
NaO A:Lys2242.25
NaN A:Lys2243.58
NaCB A:Lys2244.63
NaC A:Lys2243.39
NaCA A:Lys2244.02
NaN A:Tyr2254.50
NaCD1 A:Tyr2254.99
NaCA A:Tyr2254.83
NaO A:Hoh21702.36
NaO A:Hoh21764.49
NaO A:Hoh21983.17

interactive model:

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