Strontium in PDB 4il6: Structure of Sr-Substituted Photosystem II

All present enzymatic activity of Structure of Sr-Substituted Photosystem II:
1.10.3.9;

The structure of Structure of Sr-Substituted Photosystem II, PDB code: 4il6 was solved by F.H.M.Koua, Y.Umena, K.Kawakami, N.Kamiya, J.R.Shen, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	19.96 / 2.10
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	121.860, 228.790, 285.760, 90.00, 90.00, 90.00
R / Rfree (%)	17.6 / 20.5

The structure of Structure of Sr-Substituted Photosystem II also contains other interesting chemical elements:

Magnesium	(Mg)	74 atoms
Manganese	(Mn)	8 atoms
Iron	(Fe)	6 atoms
Chlorine	(Cl)	4 atoms

The binding sites of Strontium atom in the Structure of Sr-Substituted Photosystem II (pdb code 4il6). This binding sites where shown within 5.0 Angstroms radius around Strontium atom.
In total 2 binding sites of Strontium where determined in the Structure of Sr-Substituted Photosystem II, PDB code: 4il6:
Jump to Strontium binding site number: 1; 2;

Strontium binding site 1 out of 2 in the Structure of Sr-Substituted Photosystem II


Mono view


Stereo pair view

A full contact list of Strontium with other atoms in the Sr binding site number 1 of Structure of Sr-Substituted Photosystem II within 5.0Å range: probe atom residue distance (Å) B Occ A:Sr1001 b:27.0 occ:0.70 SR1 A:OER1001 0.0 27.0 0.7 O A:HOH1136 2.3 28.7 1.0 O1 A:OER1001 2.4 26.0 1.0 O A:HOH1155 2.5 29.3 1.0 OD1 A:ASP170 2.6 25.4 1.0 O5 A:OER1001 2.6 27.3 1.0 O A:ALA344 2.6 28.5 1.0 O2 A:OER1001 2.6 25.6 1.0 OE1 A:GLU189 3.1 27.2 1.0 CG A:ASP170 3.3 25.0 1.0 OD2 A:ASP170 3.5 25.5 1.0 MN2 A:OER1001 3.5 25.5 1.0 MN1 A:OER1001 3.6 24.9 1.0 C A:ALA344 3.6 28.7 1.0 MN3 A:OER1001 3.6 26.9 1.0 OXT A:ALA344 3.9 28.8 1.0 CD A:GLU189 3.9 27.4 1.0 OE2 A:GLU189 3.9 28.7 1.0 MN4 A:OER1001 4.0 28.7 1.0 O3 A:OER1001 4.0 25.6 1.0 O A:HOH1199 4.0 42.9 1.0 O4 A:OER1001 4.1 28.1 1.0 NH1 C:ARG357 4.4 24.9 1.0 OE1 A:GLN165 4.4 28.8 1.0 CB A:ASP170 4.5 24.3 1.0 OH A:TYR161 4.5 26.0 1.0 O A:HOH1150 4.5 29.4 1.0 NH2 C:ARG357 4.5 26.1 1.0 O A:HOH1166 4.7 30.6 1.0 CA A:ALA344 4.9 29.4 1.0 CG A:GLN165 4.9 26.6 1.0 CZ C:ARG357 5.0 25.7 1.0

Strontium binding site 2 out of 2 in the Structure of Sr-Substituted Photosystem II


Mono view


Stereo pair view

A full contact list of Strontium with other atoms in the Sr binding site number 2 of Structure of Sr-Substituted Photosystem II within 5.0Å range: probe atom residue distance (Å) B Occ a:Sr403 b:28.9 occ:0.70 SR1 a:OER403 0.0 28.9 0.7 O a:HOH514 2.3 31.6 1.0 O1 a:OER403 2.5 28.0 1.0 O a:ALA344 2.6 33.5 1.0 O5 a:OER403 2.6 29.3 1.0 O2 a:OER403 2.7 28.9 1.0 OD1 a:ASP170 2.7 29.9 1.0 O a:HOH550 2.7 35.8 1.0 OE1 a:GLU189 3.0 30.1 1.0 CG a:ASP170 3.4 29.2 1.0 MN2 a:OER403 3.5 28.5 1.0 OD2 a:ASP170 3.6 29.8 1.0 MN1 a:OER403 3.6 27.5 1.0 C a:ALA344 3.6 32.9 1.0 MN3 a:OER403 3.6 28.3 1.0 CD a:GLU189 3.9 30.4 1.0 OXT a:ALA344 3.9 31.6 1.0 OE2 a:GLU189 3.9 30.1 1.0 O3 a:OER403 4.0 28.6 1.0 MN4 a:OER403 4.0 31.2 1.0 O4 a:OER403 4.0 29.6 1.0 NH1 c:ARG357 4.4 30.7 1.0 OH a:TYR161 4.5 25.1 1.0 CB a:ASP170 4.6 27.7 1.0 OE1 a:GLN165 4.6 30.9 1.0 O a:HOH548 4.6 31.9 1.0 O a:HOH546 4.6 30.5 1.0 NH2 c:ARG357 4.8 31.5 1.0 CG a:GLN165 4.9 28.6 1.0 CA a:ALA344 4.9 32.9 1.0

F.H.Koua, Y.Umena, K.Kawakami, J.R.Shen. Structure of Sr-Substituted Photosystem II at 2.1 A Resolution and Its Implications in the Mechanism of Water Oxidation Proc.Natl.Acad.Sci.Usa V. 110 3889 2013.
ISSN: ISSN 0027-8424
PubMed: 23426624
DOI: 10.1073/PNAS.1219922110