Calcium in PDB 6hqb: Monomeric Cyanobacterial Photosystem I

Enzymatic activity of Monomeric Cyanobacterial Photosystem I

All present enzymatic activity of Monomeric Cyanobacterial Photosystem I:
1.97.1.12;

Protein crystallography data

The structure of Monomeric Cyanobacterial Photosystem I, PDB code: 6hqb was solved by S.Y.Netzer-El, N.Nelson, I.Caspy, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å) 49.29 / 4.00
Space group P 21 21 21
Cell size a, b, c (Å), α, β, γ (°) 124.322, 178.658, 181.446, 90.00, 90.00, 90.00
R / Rfree (%) 25.5 / 29.5

Other elements in 6hqb:

The structure of Monomeric Cyanobacterial Photosystem I also contains other interesting chemical elements:

Magnesium (Mg) 93 atoms
Iron (Fe) 12 atoms
Chlorine (Cl) 1 atom

Calcium Binding Sites:

The binding sites of Calcium atom in the Monomeric Cyanobacterial Photosystem I (pdb code 6hqb). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Monomeric Cyanobacterial Photosystem I, PDB code: 6hqb:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in 6hqb

Go back to Calcium Binding Sites List in 6hqb
Calcium binding site 1 out of 2 in the Monomeric Cyanobacterial Photosystem I


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Monomeric Cyanobacterial Photosystem I within 5.0Å range:
probe atom residue distance (Å) B Occ
B:Ca6001

b:0.1
occ:1.00
OE2 B:GLU134 2.7 0.6 1.0
OE1 B:GLU201 2.9 0.5 1.0
CD2 B:HIS206 3.3 0.0 1.0
O B:GLY128 3.4 0.3 1.0
NE2 B:HIS206 3.6 0.8 1.0
CD B:GLU134 3.7 0.0 1.0
CD B:GLU201 3.8 0.3 1.0
O B:VAL207 3.9 0.6 1.0
CG B:HIS206 4.2 0.2 1.0
OE1 B:GLU134 4.2 0.1 1.0
O1D B:CLA1211 4.4 0.4 1.0
C B:GLY128 4.4 0.7 1.0
N B:VAL207 4.4 0.1 1.0
OG1 B:THR130 4.4 0.3 1.0
OE2 B:GLU201 4.4 0.3 1.0
CG B:GLU201 4.5 0.2 1.0
C B:VAL207 4.5 0.4 1.0
CE1 B:HIS206 4.6 0.8 1.0
CG1 B:VAL197 4.7 94.9 1.0
CG B:GLU134 4.8 0.8 1.0
CA B:HIS206 4.8 0.7 1.0
O2D B:CLA1211 4.9 0.4 1.0
ND1 B:HIS206 4.9 0.6 1.0
CB B:HIS206 4.9 0.8 1.0
CB B:GLU201 4.9 0.6 1.0
N B:THR130 5.0 0.3 1.0
CGD B:CLA1211 5.0 0.1 1.0

Calcium binding site 2 out of 2 in 6hqb

Go back to Calcium Binding Sites List in 6hqb
Calcium binding site 2 out of 2 in the Monomeric Cyanobacterial Photosystem I


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Monomeric Cyanobacterial Photosystem I within 5.0Å range:
probe atom residue distance (Å) B Occ
L:Ca1001

b:0.7
occ:1.00
O L:PRO70 2.5 0.9 1.0
OD1 L:ASP73 2.5 0.3 1.0
OD1 A:ASP469 3.2 0.0 1.0
CG L:ASP73 3.4 0.2 1.0
C L:PRO70 3.6 0.3 1.0
OD2 L:ASP73 3.6 0.7 1.0
CG A:GLN468 4.0 0.2 1.0
CG A:ASP469 4.1 0.3 1.0
OD2 A:ASP469 4.2 0.8 1.0
NH1 L:ARG72 4.4 0.8 1.0
CA L:PRO70 4.4 0.1 1.0
N L:ARG72 4.5 1.0 1.0
N L:LEU71 4.5 0.6 1.0
O L:GLY69 4.5 0.9 1.0
N L:ASP73 4.6 0.6 1.0
CA L:LEU71 4.6 0.2 1.0
NE2 A:GLN468 4.7 0.5 1.0
CB L:ASP73 4.8 0.4 1.0
CD A:GLN468 4.9 0.3 1.0
CG L:ARG72 4.9 0.5 1.0
O A:GLN468 4.9 0.2 1.0
C L:LEU71 5.0 0.6 1.0

Reference:

S.Y.Netzer-El, I.Caspy, N.Nelson. Crystal Structure of Photosystem I Monomer From Synechocystis Pcc 6803. Front Plant Sci V. 9 1865 2018.
ISSN: ESSN 1664-462X
PubMed: 30662446
DOI: 10.3389/FPLS.2018.01865
Page generated: Sat Dec 12 06:10:14 2020

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