Magnesium in PDB 7tpx: Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii

All present enzymatic activity of Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii:
1.18.6.1;

The structure of Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii, PDB code: 7tpx was solved by T.M.Buscagan, J.T.Kaiser, D.C.Rees, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	45.59 / 1.35
Space group	P 2 21 21
Cell size a, b, c (Å), α, β, γ (°)	45.593, 74.258, 74.446, 90, 90, 90
R / Rfree (%)	17.6 / 19.5

The structure of Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii also contains other interesting chemical elements:

Iron

(Fe)

2 atoms

The binding sites of Magnesium atom in the Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii (pdb code 7tpx). 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 Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii, PDB code: 7tpx:

Magnesium binding site 1 out of 1 in the Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Selenium-Free Nitrogenase Fe Protein (AV2) From A. Vinelandii within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg302 b:11.7 occ:1.00 OG A:SER16 2.0 12.3 1.0 O A:HOH441 2.0 12.5 1.0 O2B A:ADP303 2.1 11.6 1.0 O A:HOH465 2.1 13.8 1.0 O A:HOH463 2.1 13.9 1.0 O A:HOH449 2.2 13.2 1.0 CB A:SER16 3.1 11.8 1.0 PB A:ADP303 3.3 11.7 1.0 O1B A:ADP303 3.6 13.8 1.0 OD2 A:ASP39 3.8 15.7 1.0 N A:SER16 3.9 11.5 1.0 OD1 A:ASP43 3.9 17.5 1.0 CA A:SER16 4.1 11.7 1.0 OD2 A:ASP125 4.1 15.5 1.0 O1A A:ADP303 4.1 12.8 1.0 OG A:SER44 4.2 15.6 1.0 OD1 A:ASP125 4.3 13.9 1.0 O3A A:ADP303 4.3 12.2 1.0 O3B A:ADP303 4.4 11.4 1.0 CG A:ASP39 4.5 14.3 1.0 PA A:ADP303 4.5 13.4 1.0 CG A:ASP125 4.6 13.3 1.0 O A:HOH500 4.6 21.7 1.0 O2A A:ADP303 4.7 13.5 1.0 CB A:LYS15 4.8 10.6 1.0 CB A:ASP39 4.9 14.2 1.0 CE A:LYS15 4.9 13.1 1.0 C A:LYS15 5.0 11.4 1.0

T.M.Buscagan, J.T.Kaiser, D.C.Rees. Selenocyanate Derived Se-Incorporation Into the Nitrogenase Fe Protein Cluster. Elife V. 11 2022.
ISSN: ESSN 2050-084X
PubMed: 35904245
DOI: 10.7554/ELIFE.79311