Magnesium in PDB 3c95: Exonuclease I (Apo)

All present enzymatic activity of Exonuclease I (Apo):
3.1.11.1;

The structure of Exonuclease I (Apo), PDB code: 3c95 was solved by J.L.Keck, D.Lu, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 1.70
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	52.628, 92.081, 102.787, 90.00, 90.00, 90.00
R / Rfree (%)	18 / 21.3

The binding sites of Magnesium atom in the Exonuclease I (Apo) (pdb code 3c95). 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 Exonuclease I (Apo), PDB code: 3c95:

Magnesium binding site 1 out of 1 in the Exonuclease I (Apo)


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Exonuclease I (Apo) within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg483 b:15.2 occ:1.00 O A:HOH512 2.0 18.0 1.0 O A:HOH490 2.0 15.6 1.0 O A:HOH496 2.1 16.0 1.0 OD1 A:ASP15 2.1 17.8 1.0 O A:HOH497 2.1 16.7 1.0 O A:HOH545 2.1 21.2 1.0 CG A:ASP15 3.1 16.7 1.0 OD2 A:ASP15 3.4 16.9 1.0 O A:HOH646 4.0 30.6 1.0 O A:TYR16 4.0 15.0 1.0 OD1 A:ASP108 4.0 16.4 1.0 O A:HOH491 4.1 15.7 1.0 OD2 A:ASP108 4.1 16.1 1.0 O A:HOH527 4.2 19.5 1.0 O A:TYR102 4.3 12.9 1.0 O A:HOH892 4.4 49.0 1.0 CB A:ASP15 4.4 14.0 1.0 CG A:ASP108 4.5 15.4 1.0 N A:TYR16 4.8 13.6 1.0 CA A:ASP15 4.9 14.2 1.0

D.Lu, J.L.Keck. Structural Basis of Escherichia Coli Single-Stranded Dna-Binding Protein Stimulation of Exonuclease I. Proc.Natl.Acad.Sci.Usa V. 105 9169 2008.
ISSN: ISSN 0027-8424
PubMed: 18591666
DOI: 10.1073/PNAS.0800741105