Iron in PDB 1aig: Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State

The structure of Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State, PDB code: 1aig was solved by M.H.B.Stowell, T.M.Mcphillips, S.M.Soltis, D.C.Rees, E.Abresch, G.Feher, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	30.00 / 2.60
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	140.100, 140.100, 271.700, 90.00, 90.00, 90.00
R / Rfree (%)	21.5 / 29.9

The structure of Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State also contains other interesting chemical elements:

Magnesium

(Mg)

8 atoms

The binding sites of Iron atom in the Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State (pdb code 1aig). This binding sites where shown within 5.0 Angstroms radius around Iron atom.
In total 2 binding sites of Iron where determined in the Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State, PDB code: 1aig:
Jump to Iron binding site number: 1; 2;

Iron binding site 1 out of 2 in the Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State


Mono view


Stereo pair view

A full contact list of Iron with other atoms in the Fe binding site number 1 of Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State within 5.0Å range: probe atom residue distance (Å) B Occ M:Fe308 b:40.6 occ:1.00 OE1 M:GLU234 2.1 44.3 1.0 NE2 L:HIS190 2.1 38.6 1.0 NE2 M:HIS219 2.1 39.9 1.0 OE2 M:GLU234 2.1 43.0 1.0 NE2 M:HIS266 2.3 43.5 1.0 NE2 L:HIS230 2.4 29.9 1.0 CD M:GLU234 2.4 43.9 1.0 CE1 L:HIS190 2.8 37.6 1.0 CE1 M:HIS219 3.0 39.7 1.0 CE1 L:HIS230 3.2 30.3 1.0 CD2 M:HIS219 3.2 39.3 1.0 CD2 M:HIS266 3.2 43.3 1.0 CE1 M:HIS266 3.2 43.8 1.0 CD2 L:HIS190 3.3 37.7 1.0 CD2 L:HIS230 3.4 31.7 1.0 CG M:GLU234 3.9 41.5 1.0 ND1 L:HIS190 4.0 38.4 1.0 ND1 M:HIS219 4.2 39.2 1.0 CG M:HIS219 4.3 39.5 1.0 CG L:HIS190 4.3 37.6 1.0 ND1 L:HIS230 4.4 31.7 1.0 CG M:HIS266 4.4 42.3 1.0 ND1 M:HIS266 4.4 41.2 1.0 CG1 M:ILE223 4.5 34.5 1.0 CG L:HIS230 4.5 32.4 1.0 CG2 L:VAL194 4.7 38.5 1.0 CB M:GLU234 4.8 40.2 1.0 CD1 M:ILE223 4.8 35.3 1.0

Iron binding site 2 out of 2 in the Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State


Mono view


Stereo pair view

A full contact list of Iron with other atoms in the Fe binding site number 2 of Photosynthetic Reaction Center From Rhodobacter Sphaeroides in the D+Qb-Charge Separated State within 5.0Å range: probe atom residue distance (Å) B Occ O:Fe308 b:45.8 occ:1.00 NE2 N:HIS190 2.2 47.5 1.0 NE2 O:HIS219 2.2 56.1 1.0 OE1 O:GLU234 2.2 45.6 1.0 NE2 N:HIS230 2.2 41.2 1.0 NE2 O:HIS266 2.3 42.7 1.0 OE2 O:GLU234 2.3 48.2 1.0 CD O:GLU234 2.5 46.0 1.0 CE1 O:HIS219 2.9 56.6 1.0 CE1 N:HIS190 3.0 44.8 1.0 CE1 N:HIS230 3.1 41.5 1.0 CE1 O:HIS266 3.1 45.0 1.0 CD2 N:HIS190 3.2 45.9 1.0 CD2 N:HIS230 3.2 41.4 1.0 CD2 O:HIS219 3.3 56.1 1.0 CD2 O:HIS266 3.3 44.2 1.0 CG O:GLU234 4.0 44.7 1.0 ND1 O:HIS219 4.2 55.3 1.0 ND1 N:HIS190 4.2 44.0 1.0 ND1 N:HIS230 4.2 42.6 1.0 CG N:HIS190 4.3 44.7 1.0 ND1 O:HIS266 4.3 45.5 1.0 CG O:HIS219 4.3 55.1 1.0 CG N:HIS230 4.3 42.1 1.0 CG O:HIS266 4.4 45.2 1.0 O O:HOH325 4.5 64.9 1.0 CG1 O:ILE223 4.5 37.1 1.0 CG2 N:VAL194 4.6 42.1 1.0 CB O:GLU234 4.8 43.9 1.0

M.H.Stowell, T.M.Mcphillips, D.C.Rees, S.M.Soltis, E.Abresch, G.Feher. Light-Induced Structural Changes in Photosynthetic Reaction Center: Implications For Mechanism of Electron-Proton Transfer. Science V. 276 812 1997.
ISSN: ISSN 0036-8075
PubMed: 9115209
DOI: 10.1126/SCIENCE.276.5313.812