Magnesium in PDB 4u5m: Structure of A Left-Handed Dna G-Quadruplex

The structure of Structure of A Left-Handed Dna G-Quadruplex, PDB code: 4u5m was solved by E.Schmitt, Y.Mechulam, A.T.Phan, H.Brahim, W.J.Chung, K.W.Lim, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	44.94 / 1.50
Space group	P 32 2 1
Cell size a, b, c (Å), α, β, γ (°)	51.886, 51.886, 40.167, 90.00, 90.00, 120.00
R / Rfree (%)	14.1 / 18

The structure of Structure of A Left-Handed Dna G-Quadruplex also contains other interesting chemical elements:

Potassium

(K)

4 atoms

The binding sites of Magnesium atom in the Structure of A Left-Handed Dna G-Quadruplex (pdb code 4u5m). This binding sites where shown within 5.0 Angstroms radius around Magnesium atom.
In total only one binding site of Magnesium was determined in the Structure of A Left-Handed Dna G-Quadruplex, PDB code: 4u5m:

Magnesium binding site 1 out of 1 in the Structure of A Left-Handed Dna G-Quadruplex


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Structure of A Left-Handed Dna G-Quadruplex within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg105 b:35.6 occ:1.00 O A:HOH229 2.0 36.6 1.0 O A:HOH226 2.1 50.4 1.0 O A:HOH211 2.1 23.4 1.0 O A:HOH207 2.2 42.6 1.0 OP2 A:DG12 2.3 18.7 1.0 O A:HOH234 3.6 17.6 1.0 P A:DG12 3.8 16.0 1.0 OP2 A:DT13 4.0 15.6 1.0 OP1 A:DT13 4.4 17.1 1.0 C5' A:DG12 4.5 14.2 1.0 OP1 A:DG12 4.6 18.6 1.0 P A:DT13 4.6 15.8 1.0 O A:HOH210 4.6 29.6 1.0 O5' A:DG12 4.6 14.7 1.0 C3' A:DG12 4.6 11.9 1.0 O3' A:DG11 4.6 15.1 1.0 O A:HOH223 4.9 34.1 1.0 O3' A:DG12 5.0 14.1 1.0

W.J.Chung, B.Heddi, E.Schmitt, K.W.Lim, Y.Mechulam, A.T.Phan. Structure of A Left-Handed Dna G-Quadruplex. Proc.Natl.Acad.Sci.Usa 2015.
ISSN: ESSN 1091-6490
PubMed: 25695967
DOI: 10.1073/PNAS.1418718112