Calcium in PDB 1exz: Structure of Stem Cell Factor

The structure of Structure of Stem Cell Factor, PDB code: 1exz was solved by Z.Zhang, R.Zhang, A.Joachimiak, J.Schlessinger, X.Kong, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	40.00 / 2.30
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	36.154, 87.526, 79.434, 90.00, 97.76, 90.00
R / Rfree (%)	22.3 / 29.4

The structure of Structure of Stem Cell Factor also contains other interesting chemical elements:

Samarium

(Sm)

4 atoms

The binding sites of Calcium atom in the Structure of Stem Cell Factor (pdb code 1exz). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Structure of Stem Cell Factor, PDB code: 1exz:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Structure of Stem Cell Factor


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Structure of Stem Cell Factor within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca806 b:29.6 occ:1.00 OD1 A:ASP54 2.0 45.1 1.0 CG A:ASP54 2.7 44.0 1.0 OD2 A:ASP54 2.7 47.2 1.0 OD1 A:ASP58 3.3 46.4 1.0 O A:HOH861 3.4 58.2 1.0 OD2 A:ASP58 3.7 48.6 1.0 CG A:ASP58 3.9 44.9 1.0 CB A:ASP54 4.1 36.9 1.0 O A:HOH864 4.4 39.6 1.0 O A:ASP54 4.7 31.4 1.0 CA A:ASP54 4.9 31.6 1.0

Calcium binding site 2 out of 2 in the Structure of Stem Cell Factor


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Structure of Stem Cell Factor within 5.0Å range: probe atom residue distance (Å) B Occ C:Ca805 b:13.2 occ:1.00 O B:SER267 2.3 55.3 1.0 O B:HOH937 2.4 34.9 1.0 OE2 C:GLU513 2.4 43.5 1.0 OE1 C:GLU513 2.5 40.5 1.0 CD C:GLU513 2.7 41.1 1.0 O B:HOH943 2.9 39.7 1.0 C B:SER267 3.4 54.6 1.0 O B:HOH933 3.8 45.1 1.0 N B:SER267 4.2 52.8 1.0 CG C:GLU513 4.2 35.8 1.0 N B:GLU268 4.3 54.6 1.0 CA B:GLU268 4.3 55.9 1.0 CA B:SER267 4.4 53.9 1.0 O C:HOH944 4.6 48.1 1.0 CB B:SER271 4.6 33.6 1.0 C B:GLU268 4.7 55.2 1.0 O B:ASN265 4.7 44.3 1.0 N B:GLY269 4.9 55.1 1.0 O B:GLY269 4.9 52.6 1.0 OG B:SER271 4.9 29.3 1.0 CB B:SER267 5.0 53.4 1.0

Z.Zhang, R.Zhang, A.Joachimiak, J.Schlessinger, X.P.Kong. Crystal Structure of Human Stem Cell Factor: Implication For Stem Cell Factor Receptor Dimerization and Activation. Proc.Natl.Acad.Sci.Usa V. 97 7732 2000.
ISSN: ISSN 0027-8424
PubMed: 10884405
DOI: 10.1073/PNAS.97.14.7732