Sodium in the structure of Crystal Structure of A Bpti Variant (CYS14->Ser) in Complex With Trypsin (pdb 2fi4)

The binding sites of Sodium atom in the structure of Crystal Structure of A Bpti Variant (CYS14->Ser) in Complex With Trypsin (pdb code 2fi4). This binding sites where shown with 5.0 Angstroms radius around Sodium atom. The 2fi4 structure was solved by E.ZAKHAROVA, M.P.HORVATH, D.P.GOLDENBERG, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 20.0-1.6 Space group I222 a (A) 74.783 b (A) 82.435 c (A) 123.965 alpha (°) 90.00 beta (°) 90.00 gamma (°) 90.00 Rfactor (%) 21.7 Rfree (%) 23.5 Sodium Binding Sites: Sodium binding site 1 out of 1 in 2fi4 Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Sodium in the PDB 2fi4. 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: E: Ala24, E: Asp71, E: Asn72, E: Glu77, E: Val154, E: Hoh2027, E: Hoh2130, E: Hoh2169, E: Hoh2170, conact list: Atom Atom Distance (A) Na CB E:Ala24 4.49 Na CB E:Asp71 3.99 Na OD2 E:Asp71 2.54 Na OD1 E:Asp71 4.69 Na CG E:Asp71 3.59 Na N E:Asn72 4.41 Na CB E:Asn72 4.39 Na CA E:Asn72 4.96 Na OE1 E:Glu77 3.48 Na OE2 E:Glu77 2.66 Na CD E:Glu77 3.45 Na CG E:Glu77 4.90 Na CG1 E:Val154 3.97 Na O E:Hoh2027 4.18 Na O E:Hoh2130 4.89 Na O E:Hoh2169 4.50 Na O E:Hoh2170 3.30 interactive model: