Sodium in the structure of 1.9 Angstrom Crystal Structure Of The Active Form of the C5A Peptidase From Streptococcus Pyogenes (Scpa) (pdb 3eif)

The binding sites of Sodium atom in the structure of 1.9 Angstrom Crystal Structure Of The Active Form of the C5A Peptidase From Streptococcus Pyogenes (Scpa) (pdb code 3eif). This binding sites where shown with 5.0 Angstroms radius around Sodium atom. The 3eif structure was solved by J.C.COONEY, T.F.KAGAWA, M.R.O'CONNELL, M.PAOLI, P.MOUAT, P.W.O'TOOLE, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 51.1-1.9 Space group P6322 a (A) 167.561 b (A) 167.561 c (A) 141.759 alpha (°) 90.00 beta (°) 90.00 gamma (°) 120.00 Rfactor (%) 19.1 Rfree (%) 22.3 Sodium Binding Sites: Sodium binding site 1 out of 1 in 3eif Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Sodium in the PDB 3eif. 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: Met550, A: Ser551, A: Ser552, A: Ala553, A: Thr554, A: Ala555, A: Ala572, A: Gly573, A: Glu700, A: Met702, A: Ser703, A: Ile704, A: Hoh1066, conact list: Atom Atom Distance (A) Na O A:Met550 2.49 Na C A:Met550 3.66 Na CA A:Met550 4.85 Na O A:Ser551 2.90 Na N A:Ser551 4.27 Na C A:Ser551 3.50 Na CA A:Ser551 3.91 Na O A:Ser552 4.94 Na N A:Ser552 4.41 Na C A:Ser552 4.31 Na CA A:Ser552 4.85 Na O A:Ala553 2.49 Na N A:Ala553 3.64 Na C A:Ala553 3.41 Na CB A:Ala553 3.76 Na CA A:Ala553 3.81 Na N A:Thr554 4.53 Na N A:Ala555 4.92 Na O A:Ala572 2.43 Na C A:Ala572 3.58 Na CB A:Ala572 3.97 Na CA A:Ala572 4.27 Na N A:Gly573 4.61 Na CA A:Gly573 4.79 Na OE2 A:Glu700 4.69 Na C A:Met702 4.74 Na O A:Ser703 2.55 Na N A:Ser703 3.62 Na CB A:Ser703 3.64 Na OG A:Ser703 2.57 Na C A:Ser703 3.40 Na CA A:Ser703 3.73 Na N A:Ile704 4.56 Na O A:Hoh1066 4.34 interactive model: