Sodium in PDB 7by4: Tetanus Neurotoxin Receptor Binding Domain

All present enzymatic activity of Tetanus Neurotoxin Receptor Binding Domain:
3.4.24.68;

The structure of Tetanus Neurotoxin Receptor Binding Domain, PDB code: 7by4 was solved by C.M.Zhang, Y.Imoto, T.Inoue, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	44.41 / 1.50
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	66.705, 79.387, 89.753, 90, 90, 90
R / Rfree (%)	12.2 / 16.3

The binding sites of Sodium atom in the Tetanus Neurotoxin Receptor Binding Domain (pdb code 7by4). This binding sites where shown within 5.0 Angstroms radius around Sodium atom.
In total only one binding site of Sodium was determined in the Tetanus Neurotoxin Receptor Binding Domain, PDB code: 7by4:

Sodium binding site 1 out of 1 in the Tetanus Neurotoxin Receptor Binding Domain


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Tetanus Neurotoxin Receptor Binding Domain within 5.0Å range: probe atom residue distance (Å) B Occ A:Na1402 b:20.8 occ:1.00 O6 A:BTB1401 2.0 28.1 1.0 N A:BTB1401 2.1 28.2 1.0 ND1 A:HIS1271 2.1 22.2 1.0 O8 A:BTB1401 2.2 29.3 1.0 O1 A:BTB1401 2.2 35.5 1.0 O3 A:BTB1401 2.3 29.4 1.0 C2 A:BTB1401 2.8 29.4 1.0 C6 A:BTB1401 2.8 32.0 1.0 CE1 A:HIS1271 2.9 22.1 1.0 C5 A:BTB1401 2.9 33.5 1.0 C1 A:BTB1401 3.0 32.0 1.0 C7 A:BTB1401 3.0 29.6 1.0 C8 A:BTB1401 3.1 31.0 1.0 C3 A:BTB1401 3.1 30.6 1.0 CG A:HIS1271 3.3 17.2 1.0 OD2 A:ASP1222 3.7 27.3 1.0 O A:HOH1667 3.7 28.0 1.0 CB A:HIS1271 3.8 17.3 1.0 CA A:HIS1271 4.0 15.8 1.0 NE2 A:HIS1271 4.1 19.8 1.0 O A:THR1270 4.1 17.6 1.0 CD2 A:HIS1271 4.3 17.9 1.0 C4 A:BTB1401 4.3 33.6 1.0 CG A:ASP1222 4.3 27.0 1.0 O A:HOH1855 4.4 35.7 1.0 OD1 A:ASP1222 4.8 30.2 1.0 C A:THR1270 4.9 15.7 1.0 N A:HIS1271 5.0 15.3 1.0 O A:HOH1887 5.0 46.5 1.0

C.M.Zhang, Y.Imoto, T.Inoue. Structure of the Receptor Binding Fragment Hc of Tetanus Neurotoxin To Be Published.