Calcium in PDB 1c7k: Crystal Structure of the Zinc Protease

The structure of Crystal Structure of the Zinc Protease, PDB code: 1c7k was solved by G.Kurisu, S.Harada, Y.Kai, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	55.00 / 1.00
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	55.103, 55.199, 37.243, 90.00, 90.00, 90.00
R / Rfree (%)	14.8 / 17.8

The structure of Crystal Structure of the Zinc Protease also contains other interesting chemical elements:

Zinc

(Zn)

1 atom

The binding sites of Calcium atom in the Crystal Structure of the Zinc Protease (pdb code 1c7k). 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 Crystal Structure of the Zinc Protease, PDB code: 1c7k:

Calcium binding site 1 out of 1 in the Crystal Structure of the Zinc Protease


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Crystal Structure of the Zinc Protease within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca134 b:9.2 occ:1.00 O A:HOH222 2.4 26.2 1.0 O A:HOH205 2.4 13.6 1.0 OG1 A:THR78 2.5 8.2 1.0 O A:HOH215 2.5 11.7 1.0 OD2 A:ASP76 2.5 9.0 1.0 O A:HOH219 2.5 20.3 1.0 OD1 A:ASP76 2.6 7.6 1.0 CG A:ASP76 2.9 6.8 1.0 CB A:THR78 3.3 7.4 1.0 N A:THR78 4.1 6.0 1.0 CA A:THR78 4.3 6.4 1.0 OE2 A:GLU17 4.4 14.3 1.0 CB A:ASP76 4.4 7.5 1.0 CG2 A:THR78 4.4 8.3 1.0 OE1 A:GLU17 4.6 12.6 1.0 CD A:GLU17 4.9 10.2 1.0

G.Kurisu, Y.Kai, S.Harada. Structure of the Zinc-Binding Site in the Crystal Structure of A Zinc Endoprotease From Streptomyces Caespitosus at 1 A Resolution. J.Inorg.Biochem. V. 82 225 2000.
ISSN: ISSN 0162-0134
PubMed: 11132632
DOI: 10.1016/S0162-0134(00)00136-7