Calcium in PDB 5hkj: Single Chain Recombinant Globular Head of the Complement System Protein C1Q

The structure of Single Chain Recombinant Globular Head of the Complement System Protein C1Q, PDB code: 5hkj was solved by C.P.Moreau, C.Gaboriaud, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	42.82 / 1.35
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	81.115, 52.729, 89.930, 90.00, 115.22, 90.00
R / Rfree (%)	17.5 / 20

The binding sites of Calcium atom in the Single Chain Recombinant Globular Head of the Complement System Protein C1Q (pdb code 5hkj). 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 Single Chain Recombinant Globular Head of the Complement System Protein C1Q, PDB code: 5hkj:

Calcium binding site 1 out of 1 in the Single Chain Recombinant Globular Head of the Complement System Protein C1Q


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Single Chain Recombinant Globular Head of the Complement System Protein C1Q within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca502 b:14.1 occ:1.00 OE1 A:GLN363 2.3 15.4 1.0 OE1 A:GLN90 2.3 15.7 1.0 OD1 A:ASP356 2.3 14.3 1.0 O A:TYR357 2.3 16.5 1.0 O A:HOH793 2.4 18.9 1.0 O A:HOH808 2.4 16.9 1.0 CG A:ASP356 3.3 12.9 1.0 CD A:GLN90 3.4 17.7 1.0 CD A:GLN363 3.4 17.1 1.0 C A:TYR357 3.5 16.4 1.0 N A:TYR357 3.9 15.9 1.0 OD2 A:ASP356 3.9 15.0 1.0 NE2 A:GLN90 4.0 18.8 1.0 O A:PHE89 4.1 16.7 1.0 CB A:GLN363 4.1 13.9 1.0 NE2 A:GLN226 4.2 11.8 0.7 C A:ASP356 4.2 15.3 1.0 NE2 A:GLN363 4.3 17.3 1.0 CA A:TYR357 4.3 15.4 1.0 CG A:GLN363 4.4 15.0 1.0 CB A:ASP356 4.4 14.4 1.0 N A:ALA358 4.4 20.4 1.0 CA A:GLN90 4.4 15.1 1.0 CA A:ALA358 4.5 17.3 1.0 CB A:ALA358 4.5 19.3 1.0 O A:HOH758 4.5 24.6 1.0 CG A:GLN90 4.6 15.6 1.0 CB A:GLN90 4.6 16.2 1.0 O A:HOH681 4.7 17.4 1.0 CA A:ASP356 4.7 13.2 1.0 O A:ASP356 4.7 17.9 1.0 O A:HOH811 4.8 19.3 1.0 O A:HOH799 4.8 16.7 1.0

C.Moreau, I.Bally, A.Chouquet, B.Bottazzi, B.Ghebrehiwet, C.Gaboriaud, N.Thielens. Structural and Functional Characterization of A Single-Chain Form of the Recognition Domain of Complement Protein C1Q. Front Immunol V. 7 79 2016.
ISSN: ESSN 1664-3224
PubMed: 26973654
DOI: 10.3389/FIMMU.2016.00079