Calcium in PDB 6r26: The Photosensory Core Module (Pas-Gaf-Phy) of the Bacterial Phytochrome AGP1 (ATBPHP1) Locked in A Pr-Like State

The structure of The Photosensory Core Module (Pas-Gaf-Phy) of the Bacterial Phytochrome AGP1 (ATBPHP1) Locked in A Pr-Like State, PDB code: 6r26 was solved by P.Scheerer, N.Michael, T.Lamparter, N.Krauss, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	46.84 / 3.11
Space group	I 4 2 2
Cell size a, b, c (Å), α, β, γ (°)	174.445, 174.445, 79.067, 90.00, 90.00, 90.00
R / Rfree (%)	21.6 / 27.6

The binding sites of Calcium atom in the The Photosensory Core Module (Pas-Gaf-Phy) of the Bacterial Phytochrome AGP1 (ATBPHP1) Locked in A Pr-Like State (pdb code 6r26). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total only one binding site of Calcium was determined in the The Photosensory Core Module (Pas-Gaf-Phy) of the Bacterial Phytochrome AGP1 (ATBPHP1) Locked in A Pr-Like State, PDB code: 6r26:

Calcium binding site 1 out of 1 in the The Photosensory Core Module (Pas-Gaf-Phy) of the Bacterial Phytochrome AGP1 (ATBPHP1) Locked in A Pr-Like State


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of The Photosensory Core Module (Pas-Gaf-Phy) of the Bacterial Phytochrome AGP1 (ATBPHP1) Locked in A Pr-Like State within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca602 b:0.5 occ:1.00 OD1 A:ASP167 2.2 0.6 1.0 O A:PHE168 2.5 88.1 1.0 CG A:ASP167 3.2 0.7 1.0 OD2 A:ASP167 3.4 0.8 1.0 C A:PHE168 3.7 90.4 1.0 NE1 A:TRP274 4.4 91.5 1.0 N A:PHE168 4.4 93.3 1.0 N A:GLY169 4.5 93.4 1.0 O A:TRP274 4.5 97.2 1.0 CB A:ASP167 4.6 0.2 1.0 C A:ASP167 4.6 95.4 1.0 CA A:GLY169 4.6 95.3 1.0 CA A:PHE168 4.6 91.4 1.0 CE2 A:TRP274 4.7 92.6 1.0 CD1 A:TRP274 4.7 89.1 1.0 O A:ASP167 4.9 99.2 1.0 CA A:ASP167 5.0 98.0 1.0

P.Scheerer, A.Schmidt, S.Nagano, B.Qureshi, M.Szczepek, L.Sauthof, N.Michael, K.Inomata, T.Lamparter, N.Krauss. Crystal Structures of the Photosensory Core Module of Bacteriophytochrome AGP1 Reveal Pronounced Structural Flexibility of This Protein in the Red-Absorbing Pr State To Be Published.