Potassium in PDB 2hhk: Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol

The structure of Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol, PDB code: 2hhk was solved by A.W.Roszak, A.T.Gardiner, N.W.Isaacs, R.J.Cogdell, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	46.00 / 2.50
Space group	P 31 2 1
Cell size a, b, c (Å), α, β, γ (°)	139.417, 139.417, 183.701, 90.00, 90.00, 120.00
R / Rfree (%)	17.2 / 19.7

The structure of Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol also contains other interesting chemical elements:

Magnesium	(Mg)	4 atoms
Bromine	(Br)	2 atoms
Iron	(Fe)	1 atom
Chlorine	(Cl)	1 atom

The binding sites of Potassium atom in the Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol (pdb code 2hhk). 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 Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol, PDB code: 2hhk:

Potassium binding site 1 out of 1 in the Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Reaction Centre From Rhodobacter Sphaeroides Strain R-26.1 Complexed with Dibrominated Phosphatidylglycerol within 5.0Å range: probe atom residue distance (Å) B Occ H:K700 b:58.9 occ:1.00 O H:MET134 2.6 57.4 1.0 O H:PHE140 2.8 55.0 1.0 O H:ALA137 2.9 57.4 1.0 O H:HOH1369 3.0 49.7 1.0 O H:HOH1370 3.0 95.2 1.0 O H:HOH1371 3.1 64.8 1.0 C H:ALA137 3.7 58.5 1.0 N H:PHE140 3.7 58.8 1.0 C H:PHE140 3.7 56.9 1.0 C H:MET134 3.8 57.9 1.0 CA H:PHE140 4.1 57.8 1.0 N H:GLY139 4.1 58.8 1.0 CB H:PHE140 4.2 57.5 1.0 CG H:MET134 4.3 58.5 1.0 N H:ALA137 4.3 59.7 1.0 O H:HOH1342 4.3 66.6 1.0 O H:HOH1174 4.4 52.4 1.0 CA H:ALA137 4.4 58.9 1.0 O H:LYS135 4.5 58.9 1.0 N H:ALA138 4.5 59.2 1.0 C H:LYS135 4.5 58.8 1.0 C H:GLY139 4.6 58.5 1.0 CA H:LYS135 4.6 58.5 1.0 C H:ALA138 4.6 58.8 1.0 N H:LYS135 4.6 58.2 1.0 CA H:ALA138 4.7 59.3 1.0 CA H:MET134 4.8 58.5 1.0 CA H:GLY139 4.8 58.1 1.0 CB H:ALA137 4.8 57.9 1.0 N H:HIS141 5.0 57.4 1.0

A.W.Roszak, A.T.Gardiner, N.W.Isaacs, R.J.Cogdell. Brominated Lipids Identify Lipid Binding Sites on the Surface of the Reaction Center From Rhodobacter Sphaeroides. Biochemistry V. 46 2909 2007.
ISSN: ISSN 0006-2960
PubMed: 17315985
DOI: 10.1021/BI062154I