Magnesium in PDB 4b3a: Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline

The structure of Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline, PDB code: 4b3a was solved by S.Eltschkner, S.Schindler, G.J.Palm, J.Schneider, W.Hinrichs, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	29.80 / 1.70
Space group	I 41 2 2
Cell size a, b, c (Å), α, β, γ (°)	67.537, 67.537, 179.859, 90.00, 90.00, 90.00
R / Rfree (%)	20.304 / 24.997

The structure of Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline also contains other interesting chemical elements:

Chlorine

(Cl)

3 atoms

The binding sites of Magnesium atom in the Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline (pdb code 4b3a). 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 Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline, PDB code: 4b3a:

Magnesium binding site 1 out of 1 in the Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg1212 b:38.2 occ:1.00 O12 A:TAC222 2.0 38.3 1.0 O A:HOH2071 2.0 35.7 1.0 O A:HOH2130 2.1 38.3 1.0 O11 A:TAC222 2.1 35.6 1.0 O A:HOH2070 2.2 37.4 1.0 O A:HOH2072 2.3 43.6 1.0 C12 A:TAC222 3.0 36.1 1.0 C11 A:TAC222 3.1 34.8 1.0 C1B A:TAC222 3.4 33.9 1.0 O A:HOH2078 4.0 54.2 1.0 O A:THR103 4.0 41.4 1.0 OG1 A:THR103 4.1 40.5 1.0 O10 A:TAC222 4.1 42.2 1.0 C1C A:TAC222 4.2 35.6 1.0 O1C A:TAC222 4.3 35.4 1.0 O A:HOH2099 4.4 51.9 1.0 C1A A:TAC222 4.4 36.4 1.0 C10 A:TAC222 4.8 40.1 1.0 C A:THR103 4.8 43.1 1.0 O A:ALA100 4.8 37.2 1.0 C51 A:TAC222 4.9 33.8 1.0 O1 A:TAC222 4.9 39.2 1.0

S.Eltschkner, S.Schindler, G.J.Palm, J.Schneider, W.Hinrichs. Tetracycline Repressor Class D Mutant H100A in Complex with Tetracycline To Be Published.