Magnesium in PDB 1q78: Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride

All present enzymatic activity of Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride:
2.7.7.19;

The structure of Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride, PDB code: 1q78 was solved by G.Martin, A.Moglich, W.Keller, S.Doublie, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	19.76 / 2.80
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	57.520, 63.810, 180.420, 90.00, 90.00, 90.00
R / Rfree (%)	20.4 / 25.5

The binding sites of Magnesium atom in the Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride (pdb code 1q78). 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 Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride, PDB code: 1q78:

Magnesium binding site 1 out of 1 in the Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Crystal Structure of Poly(A) Polymerase in Complex with 3'- Datp and Magnesium Chloride within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg1002 b:13.2 occ:1.00 OD2 A:ASP115 2.5 25.0 1.0 O3B A:3AT1000 2.7 47.7 1.0 OD1 A:ASP113 3.0 45.1 1.0 O1B A:3AT1000 3.0 48.1 1.0 O5' A:3AT1000 3.1 52.3 1.0 O1A A:3AT1000 3.4 53.2 1.0 PB A:3AT1000 3.4 47.4 1.0 CG A:ASP115 3.6 24.5 1.0 PA A:3AT1000 3.7 50.9 1.0 O3G A:3AT1000 3.8 46.6 1.0 PG A:3AT1000 3.9 45.6 1.0 OD1 A:ASP115 3.9 24.3 1.0 O3A A:3AT1000 4.0 49.5 1.0 CG A:ASP113 4.0 42.0 1.0 O A:HOH2045 4.1 23.4 1.0 O A:ASP113 4.2 32.5 1.0 OG A:SER102 4.2 22.7 1.0 OD2 A:ASP113 4.3 44.9 1.0 C5' A:3AT1000 4.3 51.5 1.0 O1G A:3AT1000 4.6 44.3 1.0 C4' A:3AT1000 4.7 51.4 1.0 O2B A:3AT1000 4.8 47.2 1.0 CB A:ASP115 4.8 23.6 1.0 C A:ASP113 4.9 32.3 1.0 O2G A:3AT1000 5.0 47.3 1.0 C3' A:3AT1000 5.0 52.0 1.0

G.Martin, A.Moglich, W.Keller, S.Doublie. Biochemical and Structural Insights Into Substrate Binding and Catalytic Mechanism of Mammalian Poly(A) Polymerase. J.Mol.Biol. V. 341 911 2004.
ISSN: ISSN 0022-2836
PubMed: 15328606
DOI: 10.1016/J.JMB.2004.06.047