Calcium in PDB 6pnj: Structure of Photosystem I Acclimated to Far-Red Light

All present enzymatic activity of Structure of Photosystem I Acclimated to Far-Red Light:
1.97.1.12;

The structure of Structure of Photosystem I Acclimated to Far-Red Light also contains other interesting chemical elements:

Magnesium	(Mg)	267 atoms
Iron	(Fe)	36 atoms

The binding sites of Calcium atom in the Structure of Photosystem I Acclimated to Far-Red Light (pdb code 6pnj). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 3 binding sites of Calcium where determined in the Structure of Photosystem I Acclimated to Far-Red Light, PDB code: 6pnj:
Jump to Calcium binding site number: 1; 2; 3;

Calcium binding site 1 out of 3 in the Structure of Photosystem I Acclimated to Far-Red Light


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Structure of Photosystem I Acclimated to Far-Red Light within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca854 b:23.8 occ:1.00 OD2 A:ASP480 2.5 13.7 1.0 OD1 A:ASP480 2.7 13.7 1.0 OE2 L:GLU78 2.9 32.3 1.0 CG A:ASP480 3.0 13.7 1.0 O L:PRO75 3.2 18.0 1.0 NE2 A:GLN479 3.5 12.9 1.0 CA L:PRO75 3.9 18.0 1.0 C L:PRO75 4.0 18.0 1.0 O U:VAL171 4.0 20.9 1.0 CD L:GLU78 4.0 32.3 1.0 NH1 L:ARG77 4.1 21.9 1.0 NH1 A:ARG477 4.3 9.9 1.0 C U:ASN172 4.4 18.3 1.0 CB L:PRO75 4.4 18.0 1.0 CB A:ASP480 4.5 13.7 1.0 CB U:ASN172 4.5 18.3 1.0 CD A:GLN479 4.5 12.9 1.0 OE1 L:GLU78 4.6 32.3 1.0 CG A:GLN479 4.6 12.9 1.0 O1D L:CLA202 4.6 21.2 1.0 CD A:ARG477 4.6 9.9 1.0 O L:GLY74 5.0 17.3 1.0

Calcium binding site 2 out of 3 in the Structure of Photosystem I Acclimated to Far-Red Light


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Structure of Photosystem I Acclimated to Far-Red Light within 5.0Å range: probe atom residue distance (Å) B Occ G:Ca854 b:24.7 occ:1.00 OD2 G:ASP480 2.5 13.9 1.0 OD1 G:ASP480 2.7 13.9 1.0 OE2 U:GLU78 2.9 30.0 1.0 CG G:ASP480 3.0 13.9 1.0 O U:PRO75 3.2 17.9 1.0 NE2 G:GLN479 3.5 13.8 1.0 CA U:PRO75 3.9 17.9 1.0 O l:VAL171 4.0 20.8 1.0 C U:PRO75 4.0 17.9 1.0 CD U:GLU78 4.0 30.0 1.0 NH1 U:ARG77 4.1 20.4 1.0 C l:ASN172 4.3 17.2 1.0 NH1 G:ARG477 4.3 10.2 1.0 CB U:PRO75 4.4 17.9 1.0 CB l:ASN172 4.4 17.2 1.0 CB G:ASP480 4.5 13.9 1.0 CD G:GLN479 4.5 13.8 1.0 OE1 U:GLU78 4.6 30.0 1.0 CG G:GLN479 4.6 13.8 1.0 O1D U:CLA203 4.6 21.2 1.0 CD G:ARG477 4.6 10.2 1.0 CA l:ASN172 4.9 17.2 1.0 O U:GLY74 5.0 16.9 1.0

Calcium binding site 3 out of 3 in the Structure of Photosystem I Acclimated to Far-Red Light


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 3 of Structure of Photosystem I Acclimated to Far-Red Light within 5.0Å range: probe atom residue distance (Å) B Occ a:Ca854 b:31.5 occ:1.00 OD2 a:ASP480 2.5 14.3 1.0 OD1 a:ASP480 2.7 14.3 1.0 OE2 l:GLU78 2.9 31.2 1.0 CG a:ASP480 3.0 14.3 1.0 O l:PRO75 3.2 18.0 1.0 NE2 a:GLN479 3.5 13.3 1.0 CA l:PRO75 3.9 18.0 1.0 O L:VAL171 3.9 20.4 1.0 C l:PRO75 4.0 18.0 1.0 CD l:GLU78 4.0 31.2 1.0 NH1 l:ARG77 4.1 21.7 1.0 C L:ASN172 4.3 18.3 1.0 NH1 a:ARG477 4.3 10.5 1.0 CB l:PRO75 4.4 18.0 1.0 CB L:ASN172 4.5 18.3 1.0 CB a:ASP480 4.5 14.3 1.0 CD a:GLN479 4.5 13.3 1.0 OE1 l:GLU78 4.6 31.2 1.0 CG a:GLN479 4.6 13.3 1.0 O1D l:CLA205 4.6 21.2 1.0 CD a:ARG477 4.6 10.5 1.0 CA L:ASN172 5.0 18.3 1.0 O l:GLY74 5.0 17.5 1.0

C.Gisriel, G.Shen, V.Kurashov, M.Y.Ho, S.Zhang, D.Williams, J.H.Golbeck, P.Fromme, D.A.Bryant. The Structure of Photosystem I Acclimated to Far-Red Light Illuminates An Ecologically Important Acclimation Process in Photosynthesis Sci Adv V. 6 Y6415 2020.
ISSN: ESSN 2375-2548
DOI: 10.1126/SCIADV.AAY6415