Calcium in PDB 4hpp: Crystal Structure of Novel Glutamine Synthase Homolog

All present enzymatic activity of Crystal Structure of Novel Glutamine Synthase Homolog:
6.3.1.11;

The structure of Crystal Structure of Novel Glutamine Synthase Homolog, PDB code: 4hpp was solved by J.E.Ladner, V.Atanasova, Z.Dolezelova, J.F.Parsons, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 2.50
Space group	P 6
Cell size a, b, c (Å), α, β, γ (°)	140.010, 140.010, 45.030, 90.00, 90.00, 120.00
R / Rfree (%)	20.5 / 29.2

The structure of Crystal Structure of Novel Glutamine Synthase Homolog also contains other interesting chemical elements:

Magnesium

(Mg)

1 atom

The binding sites of Calcium atom in the Crystal Structure of Novel Glutamine Synthase Homolog (pdb code 4hpp). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the Crystal Structure of Novel Glutamine Synthase Homolog, PDB code: 4hpp:

Calcium binding site 1 out of 1 in the Crystal Structure of Novel Glutamine Synthase Homolog


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure of Novel Glutamine Synthase Homolog within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca502 b:56.0 occ:1.00 O A:HOH645 2.3 38.0 1.0 O A:GLU441 2.4 46.0 1.0 O A:HOH667 2.6 36.5 1.0 O A:HOH666 2.8 53.5 1.0 C A:GLU441 3.6 48.8 1.0 CA A:LEU442 4.4 46.9 1.0 N A:LEU442 4.4 46.6 1.0 CA A:GLU441 4.5 50.4 1.0 O A:HOH654 4.6 49.4 1.0 O A:HOH655 4.7 43.6 1.0 C A:LEU442 4.9 47.1 1.0 CB A:GLU441 4.9 49.2 1.0

J.E.Ladner, V.Atanasova, Z.Dolezelova, J.F.Parsons. Structure and Activity of PA5508, A Hexameric Glutamine Synthetase Homologue. Biochemistry V. 51 10121 2012.
ISSN: ISSN 0006-2960
PubMed: 23234431
DOI: 10.1021/BI3014856