Sodium in PDB 2omg: Structure of Human Insulin Cocrystallized with Protamine and Urea

The structure of Structure of Human Insulin Cocrystallized with Protamine and Urea, PDB code: 2omg was solved by M.Norrman, G.Schluckebier, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	25.88 / 1.52
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	61.660, 61.660, 85.540, 90.00, 90.00, 90.00
R / Rfree (%)	18.3 / 20.9

The structure of Structure of Human Insulin Cocrystallized with Protamine and Urea also contains other interesting chemical elements:

Chlorine	(Cl)	1 atom
Zinc	(Zn)	1 atom

The binding sites of Sodium atom in the Structure of Human Insulin Cocrystallized with Protamine and Urea (pdb code 2omg). 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 Structure of Human Insulin Cocrystallized with Protamine and Urea, PDB code: 2omg:

Sodium binding site 1 out of 1 in the Structure of Human Insulin Cocrystallized with Protamine and Urea


Mono view


Stereo pair view

A full contact list of Sodium with other atoms in the Na binding site number 1 of Structure of Human Insulin Cocrystallized with Protamine and Urea within 5.0Å range: probe atom residue distance (Å) B Occ A:Na401 b:31.9 occ:1.00 O A:HOH725 2.1 46.8 1.0 O A:HOH724 2.2 40.5 1.0 O A:CYS20 2.3 32.5 1.0 O A:ASN18 2.4 29.2 1.0 O A:HOH712 2.5 36.9 1.0 O A:HOH726 2.6 30.8 1.0 C A:ASN18 3.4 28.6 1.0 C A:CYS20 3.6 32.6 1.0 N A:CYS20 4.0 29.5 1.0 C A:TYR19 4.1 30.6 1.0 N A:TYR19 4.2 28.3 1.0 CA A:TYR19 4.3 30.0 1.0 O A:GLU17 4.3 31.7 1.0 CA A:ASN18 4.4 28.6 1.0 CA A:CYS20 4.4 30.2 1.0 N A:ASN21 4.6 31.7 1.0 O A:TYR19 4.6 32.0 1.0 CA A:ASN21 4.6 33.0 1.0 C A:ASN21 4.6 33.0 1.0 O A:HOH709 4.7 40.4 1.0 OXT A:ASN21 4.7 34.9 1.0 O A:HOH718 4.7 46.5 1.0 OD1 A:ASN18 4.8 27.7 1.0 CG A:ASN18 5.0 30.3 1.0

M.Norrman, F.Hubalek, G.Schluckebier. Structural Characterization of Insulin Nph Formulations. Eur.J.Pharm.Sci. V. 30 414 2007.
PubMed: 17339105
DOI: 10.1016/J.EJPS.2007.01.003