Calcium in PDB 1s5l: Architecture of the Photosynthetic Oxygen Evolving Center

The structure of Architecture of the Photosynthetic Oxygen Evolving Center, PDB code: 1s5l was solved by K.N.Ferreira, T.M.Iverson, K.Maghlaoui, J.Barber, S.Iwata, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	20.00 / 3.50
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	134.992, 228.849, 309.940, 90.00, 90.00, 90.00
R / Rfree (%)	29.6 / 34.2

The structure of Architecture of the Photosynthetic Oxygen Evolving Center also contains other interesting chemical elements:

Magnesium	(Mg)	72 atoms
Manganese	(Mn)	8 atoms
Iron	(Fe)	6 atoms

The binding sites of Calcium atom in the Architecture of the Photosynthetic Oxygen Evolving Center (pdb code 1s5l). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Architecture of the Photosynthetic Oxygen Evolving Center, PDB code: 1s5l:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Architecture of the Photosynthetic Oxygen Evolving Center


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Architecture of the Photosynthetic Oxygen Evolving Center within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca347 b:69.6 occ:1.00 CA1 A:OEC347 0.0 69.6 1.0 OXT A:ALA344 2.0 76.6 1.0 O3 A:BCT346 2.3 70.8 1.0 O2 A:BCT346 2.3 70.9 1.0 C A:BCT346 2.3 71.1 1.0 O A:ALA344 2.4 78.5 1.0 O1 A:OEC347 2.5 69.5 1.0 O3 A:OEC347 2.5 68.3 1.0 C A:ALA344 2.5 79.7 1.0 O4 A:OEC347 2.5 71.9 1.0 MN1 A:OEC347 3.3 74.4 1.0 O1 A:BCT346 3.4 74.2 1.0 MN3 A:OEC347 3.4 68.5 1.0 MN2 A:OEC347 3.4 66.9 1.0 NE2 A:GLN165 3.6 57.1 1.0 OE2 A:GLU189 3.7 63.5 1.0 OD2 A:ASP342 3.8 83.0 1.0 MN4 A:OEC347 3.9 74.0 1.0 O2 A:OEC347 3.9 71.1 1.0 CA A:ALA344 4.0 79.4 1.0 CD A:GLU189 4.1 65.2 1.0 OE1 A:GLU189 4.1 68.1 1.0 NH2 C:ARG357 4.2 30.8 1.0 CD A:GLN165 4.6 54.5 1.0 CB A:ALA344 4.6 78.5 1.0 N A:ALA344 4.7 79.5 1.0 OE1 C:GLU354 4.9 45.6 1.0 CG A:ASP342 4.9 82.0 1.0

Calcium binding site 2 out of 2 in the Architecture of the Photosynthetic Oxygen Evolving Center


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Architecture of the Photosynthetic Oxygen Evolving Center within 5.0Å range: probe atom residue distance (Å) B Occ a:Ca2347 b:74.0 occ:1.00 CA1 a:OEC2347 0.0 74.0 1.0 O3 a:BCT2346 2.2 72.6 1.0 O2 a:BCT2346 2.3 71.7 1.0 C a:BCT2346 2.3 73.2 1.0 O a:ALA2344 2.5 80.3 1.0 O1 a:OEC2347 2.5 69.7 1.0 O3 a:OEC2347 2.5 69.0 1.0 O4 a:OEC2347 2.5 70.9 1.0 C a:ALA2344 2.6 82.6 1.0 MN1 a:OEC2347 3.3 69.9 1.0 MN3 a:OEC2347 3.4 74.4 1.0 O1 a:BCT2346 3.4 76.0 1.0 MN2 a:OEC2347 3.4 74.0 1.0 NE2 a:GLN2165 3.6 75.0 1.0 OE2 a:GLU2189 3.7 69.7 1.0 OD2 a:ASP2342 3.8 81.3 1.0 MN4 a:OEC2347 4.0 75.4 1.0 O2 a:OEC2347 4.0 71.8 1.0 CA a:ALA2344 4.1 81.2 1.0 NH2 c:ARG2357 4.2 29.0 1.0 CD a:GLU2189 4.3 68.4 1.0 OE1 a:GLU2189 4.5 71.2 1.0 CD a:GLN2165 4.5 73.1 1.0 CB a:ALA2344 4.7 82.5 1.0 N a:ALA2344 4.8 80.6 1.0 OE1 c:GLU2354 4.8 67.3 1.0 CG a:ASP2342 4.9 81.7 1.0

K.N.Ferreira, T.M.Iverson, K.Maghlaoui, J.Barber, S.Iwata. Architecture of the Photosynthetic Oxygen-Evolving Center Science V. 303 1831 2004.
ISSN: ISSN 0036-8075
PubMed: 14764885
DOI: 10.1126/SCIENCE.1093087