Potassium in PDB 7aq8: Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A

All present enzymatic activity of Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A:
1.7.2.4;

The structure of Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A, PDB code: 7aq8 was solved by L.Zhang, E.Bill, P.M.H.Kroneck, O.Einsle, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	69.43 / 1.79
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	69.545, 76.667, 109.062, 90, 93.27, 90
R / Rfree (%)	15.8 / 21.7

The structure of Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A also contains other interesting chemical elements:

Calcium	(Ca)	2 atoms
Zinc	(Zn)	2 atoms
Chlorine	(Cl)	2 atoms
Sodium	(Na)	2 atoms
Copper	(Cu)	8 atoms

The binding sites of Potassium atom in the Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A (pdb code 7aq8). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A, PDB code: 7aq8:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in the Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A within 5.0Å range: probe atom residue distance (Å) B Occ A:K704 b:94.1 occ:1.00 O B:HOH804 2.9 62.2 1.0 OE2 A:GLU492 3.2 50.8 1.0 O A:LYS454 3.2 38.5 1.0 O A:HOH997 3.4 51.2 1.0 CG A:GLU492 3.7 38.8 1.0 CD A:GLU492 3.8 48.6 1.0 O B:HOH1027 3.8 55.1 1.0 O A:HIS467 3.9 34.0 1.0 CE3 B:TRP620 4.2 32.8 1.0 OD2 B:ASP580 4.2 71.0 1.0 CZ3 B:TRP620 4.3 35.2 1.0 C A:LYS454 4.4 37.8 1.0 N A:GLU469 4.6 35.4 1.0 C A:PRO468 4.7 41.1 1.0 O A:PRO468 4.7 47.3 1.0 C A:HIS467 4.7 39.2 1.0 CA A:GLU469 4.9 28.4 1.0 O A:HOH987 4.9 31.9 1.0 OE1 A:GLU492 4.9 43.0 1.0

Potassium binding site 2 out of 2 in the Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Pseudomonas Stutzeri Nitrous Oxide Reductase Mutant, H583Y/D576A within 5.0Å range: probe atom residue distance (Å) B Occ B:K704 b:35.6 occ:0.65 O A:HOH978 2.3 36.8 1.0 O B:HOH909 2.4 42.6 1.0 O B:LYS454 2.5 31.9 1.0 OE1 B:GLU469 2.5 56.1 1.0 O A:HOH878 2.6 35.0 1.0 O B:HOH991 2.6 35.7 1.0 OE2 B:GLU469 3.1 60.3 1.0 CD B:GLU469 3.1 63.8 1.0 C B:LYS454 3.6 32.9 1.0 CD1 A:TRP620 4.1 40.0 1.0 O A:HOH954 4.2 38.0 1.0 CA B:LYS454 4.3 34.8 1.0 NE1 A:TRP620 4.3 42.2 1.0 OD1 A:ASP580 4.4 42.7 1.0 CG B:GLU469 4.6 55.4 1.0 O B:HIS467 4.6 33.2 1.0 N B:PHE455 4.7 29.9 1.0 O B:PRO468 4.7 36.9 1.0 OE1 B:GLU492 4.7 43.4 1.0 CB B:LYS454 4.7 36.0 1.0 CD1 B:PHE455 4.7 33.7 1.0 O A:PHE621 4.8 34.9 1.0 O A:HOH995 4.8 34.3 1.0 CA B:PHE455 4.9 31.3 1.0 C B:PRO468 5.0 29.3 1.0 N B:GLU469 5.0 25.8 1.0 CA B:GLU469 5.0 24.4 1.0

L.Zhang, E.Bill, P.M.H.Kroneck, O.Einsle. Histidine-Gated Proton-Coupled Electron Transfer to the Cu A Site of Nitrous Oxide Reductase. J.Am.Chem.Soc. 2020.
ISSN: ESSN 1520-5126
PubMed: 33377777
DOI: 10.1021/JACS.0C10057