Potassium in PDB 3sil: Sialidase From Salmonella Typhimurium

All present enzymatic activity of Sialidase From Salmonella Typhimurium:
3.2.1.18;

The structure of Sialidase From Salmonella Typhimurium, PDB code: 3sil was solved by E.F.Garman, G.M.Sheldrick, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	N/A / 1.05
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	47.100, 81.730, 91.500, 90.00, 90.00, 90.00
R / Rfree (%)	11.6 / 14.7

The binding sites of Potassium atom in the Sialidase From Salmonella Typhimurium (pdb code 3sil). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Sialidase From Salmonella Typhimurium, PDB code: 3sil:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in the Sialidase From Salmonella Typhimurium


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Sialidase From Salmonella Typhimurium within 5.0Å range: probe atom residue distance (Å) B Occ A:K450 b:14.4 occ:0.50 K A:K450 0.0 14.4 0.5 O2 A:GOL402 2.7 17.6 1.0 OD2 A:ASP62 2.7 7.4 0.5 O A:HOH1052 2.8 10.8 0.5 O A:HOH1054 2.8 9.3 0.5 OD2 A:ASP62 3.0 7.9 0.5 O4 A:PO4499 3.0 9.6 0.5 K A:K450 3.0 68.1 0.5 O3 A:PO4499 3.1 14.5 0.5 O A:HOH790 3.1 34.8 1.0 O1 A:GOL402 3.3 25.2 1.0 O3 A:PO4499 3.3 10.0 0.5 O A:HOH982 3.6 39.1 1.0 C2 A:GOL402 3.7 20.6 1.0 CG A:ASP62 3.7 7.5 0.5 P A:PO4499 3.8 7.5 0.5 CG A:ASP62 3.8 7.4 0.5 O A:HOH825 3.9 19.1 1.0 O A:HOH608 3.9 11.3 1.0 O3 A:GOL403 3.9 15.4 0.5 C1 A:GOL402 4.0 19.5 1.0 OD1 A:ASP62 4.1 8.1 0.5 C3 A:GOL402 4.1 14.5 1.0 OD1 A:ASP62 4.2 6.1 0.5 P A:PO4499 4.2 13.0 0.5 O3 A:GOL403 4.4 10.2 0.5 O1 A:PO4499 4.4 11.2 0.5 O1 A:PO4499 4.4 8.4 0.5 O2 A:GOL403 4.5 9.7 0.5 O A:HOH532 4.6 19.7 1.0 O4 A:PO4499 4.6 13.6 0.5 O A:HOH1053 4.6 8.4 0.5 O A:HOH958 4.7 36.1 1.0 OH A:TYR342 4.9 6.7 1.0 CB A:ASP62 4.9 7.5 0.5 CB A:ASP62 5.0 7.8 0.5

Potassium binding site 2 out of 2 in the Sialidase From Salmonella Typhimurium


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Sialidase From Salmonella Typhimurium within 5.0Å range: probe atom residue distance (Å) B Occ A:K450 b:68.1 occ:0.50 K A:K450 0.0 68.1 0.5 O A:HOH958 2.8 36.1 1.0 O3 A:PO4499 3.0 14.5 0.5 O A:HOH790 3.0 34.8 1.0 K A:K450 3.0 14.4 0.5 O A:HOH605 3.2 27.0 1.0 O A:HOH825 3.3 19.1 1.0 OD2 A:ASP62 3.3 7.4 0.5 O3 A:PO4499 3.9 10.0 0.5 OG1 A:THR127 3.9 27.5 1.0 O A:HOH945 4.0 46.9 1.0 O4 A:PO4499 4.0 13.6 0.5 P A:PO4499 4.2 13.0 0.5 O A:HOH1052 4.2 10.8 0.5 O A:HOH725 4.4 24.4 1.0 CB A:THR127 4.5 17.2 1.0 OD2 A:ASP62 4.5 7.9 0.5 CG A:ASP62 4.5 7.5 0.5 O A:HOH928 4.5 41.5 1.0 O A:HOH532 4.6 19.7 1.0 O A:HOH982 4.6 39.1 1.0 O2 A:GOL402 4.8 17.6 1.0 O A:HOH516 4.9 12.6 1.0 CG A:ASP62 4.9 7.4 0.5 CG2 A:THR127 5.0 23.8 1.0

E.F.Garman, J.Wouters, T.R.Schneider, E.R.Vimr, W.G.Laver, G.M.Sheldrick. An Enzyme at Atomic Resolution: the 1.05 A Structure of Salmonella Typhimurium Neuraminidase (Sialidase) To Be Published.