Potassium in PDB 4in7: (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center

The structure of (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center, PDB code: 4in7 was solved by R.G.Saer, A.Hardjasa, M.E.P.Murphy, J.T.Beatty, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	38.57 / 2.85
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	139.138, 139.138, 185.140, 90.00, 90.00, 120.00
R / Rfree (%)	17.4 / 21.3

The structure of (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center also contains other interesting chemical elements:

Magnesium	(Mg)	5 atoms
Iron	(Fe)	1 atom

The binding sites of Potassium atom in the (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center (pdb code 4in7). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total only one binding site of Potassium was determined in the (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center, PDB code: 4in7:

Potassium binding site 1 out of 1 in the (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of (M)L214N Mutant of the Rhodobacter Sphaeroides Reaction Center within 5.0Å range: probe atom residue distance (Å) B Occ H:K305 b:50.3 occ:1.00 O H:ALA137 2.7 47.0 1.0 O H:MET134 2.8 40.5 1.0 O H:PHE140 2.9 47.5 1.0 C H:ALA137 3.7 50.1 1.0 N H:PHE140 3.8 54.6 1.0 C H:MET134 3.8 45.6 1.0 C H:PHE140 3.9 46.0 1.0 CA H:GLY139 4.1 51.9 1.0 O H:LYS135 4.2 55.2 1.0 CA H:PHE140 4.3 50.2 1.0 N H:ALA137 4.3 44.5 1.0 C H:GLY139 4.3 57.7 1.0 C H:LYS135 4.4 43.0 1.0 CA H:LYS135 4.4 45.6 1.0 CA H:ALA138 4.4 56.8 1.0 N H:LYS135 4.4 42.5 1.0 N H:ALA138 4.5 57.0 1.0 CG H:MET134 4.5 40.7 1.0 CA H:ALA137 4.5 48.1 1.0 CB H:PHE140 4.5 54.8 1.0 CA H:MET134 4.8 46.3 1.0 CB H:ALA137 4.9 54.7 1.0 N H:ALA136 5.0 40.5 1.0

R.G.Saer, A.Hardjasa, F.I.Rosell, A.G.Mauk, M.E.Murphy, J.T.Beatty. Role of Rhodobacter Sphaeroides Photosynthetic Reaction Center Residue M214 in the Composition, Absorbance Properties, and Conformations of H(A) and B(A) Cofactors. Biochemistry V. 52 2206 2013.
ISSN: ISSN 0006-2960
PubMed: 23480277
DOI: 10.1021/BI400207M