Magnesium in PDB 3po2: Arrested Rna Polymerase II Elongation Complex

All present enzymatic activity of Arrested Rna Polymerase II Elongation Complex:
2.7.7.6;

The structure of Arrested Rna Polymerase II Elongation Complex, PDB code: 3po2 was solved by A.C.M.Cheung, P.Cramer, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	48.98 / 3.30
Space group	C 2 2 21
Cell size a, b, c (Å), α, β, γ (°)	224.570, 394.550, 282.140, 90.00, 90.00, 90.00
R / Rfree (%)	15.3 / 17.8

The structure of Arrested Rna Polymerase II Elongation Complex also contains other interesting chemical elements:

Bromine	(Br)	1 atom
Zinc	(Zn)	8 atoms

The binding sites of Magnesium atom in the Arrested Rna Polymerase II Elongation Complex (pdb code 3po2). 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 Arrested Rna Polymerase II Elongation Complex, PDB code: 3po2:

Magnesium binding site 1 out of 1 in the Arrested Rna Polymerase II Elongation Complex


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Arrested Rna Polymerase II Elongation Complex within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg2458 b:78.9 occ:1.00 OD2 A:ASP485 1.9 0.5 1.0 OP1 P:C11 1.9 0.6 1.0 OD2 A:ASP483 2.4 0.3 1.0 OD1 A:ASP481 2.5 0.0 1.0 CG A:ASP485 2.7 97.8 1.0 CG A:ASP481 2.7 0.2 1.0 OD1 A:ASP485 2.9 99.4 1.0 OD2 A:ASP481 3.0 0.8 1.0 P P:C11 3.2 0.7 1.0 CG A:ASP483 3.4 0.1 1.0 O3' P:C10 3.6 0.4 1.0 C5' P:C11 3.8 0.6 1.0 CB A:ASP481 3.8 90.3 1.0 OD1 A:ASP483 3.8 0.9 1.0 O5' P:C11 3.8 0.3 1.0 CB A:ASP485 4.0 87.9 1.0 N A:ASP481 4.4 87.0 1.0 OP2 P:C11 4.5 0.7 1.0 N A:ASP485 4.5 87.2 1.0 CA A:ASP485 4.5 86.2 1.0 CA A:ASP481 4.5 86.8 1.0 O A:ASP481 4.6 87.0 1.0 C A:ASP481 4.6 87.4 1.0 N A:ASP483 4.7 85.0 1.0 CB A:ASP483 4.7 89.7 1.0 OP2 P:C12 4.9 0.5 1.0 NH2 A:ARG446 4.9 0.2 1.0 C A:ASP483 4.9 92.7 1.0 C3' P:C10 5.0 0.6 1.0

A.C.Cheung, P.Cramer. Structural Basis of Rna Polymerase II Backtracking, Arrest and Reactivation. Nature V. 471 249 2011.
ISSN: ISSN 0028-0836
PubMed: 21346759
DOI: 10.1038/NATURE09785