Calcium in PDB 1ysb: Yeast Cytosine Deaminase Triple Mutant

All present enzymatic activity of Yeast Cytosine Deaminase Triple Mutant:
3.5.4.1;

The structure of Yeast Cytosine Deaminase Triple Mutant, PDB code: 1ysb was solved by A.Korkegian, M.E.Black, D.Baker, B.L.Stoddard, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	50.00 / 1.70
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	39.520, 54.630, 68.120, 90.00, 105.30, 90.00
R / Rfree (%)	16.2 / 18.9

The structure of Yeast Cytosine Deaminase Triple Mutant also contains other interesting chemical elements:

Zinc

(Zn)

4 atoms

The binding sites of Calcium atom in the Yeast Cytosine Deaminase Triple Mutant (pdb code 1ysb). 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 Yeast Cytosine Deaminase Triple Mutant, PDB code: 1ysb:

Calcium binding site 1 out of 1 in the Yeast Cytosine Deaminase Triple Mutant


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Yeast Cytosine Deaminase Triple Mutant within 5.0Å range: probe atom residue distance (Å) B Occ B:Ca504 b:9.0 occ:1.00 O B:ASP346 2.5 13.8 1.0 OD2 B:ASP346 2.6 20.1 1.0 C B:ASP346 3.3 11.9 1.0 CG B:ASP346 3.7 18.8 1.0 CA B:ASP346 4.1 11.3 1.0 N B:GLU347 4.2 11.5 1.0 CA B:GLU347 4.3 13.3 1.0 CB B:ASP346 4.5 16.0 1.0 OD1 B:ASP346 4.6 17.3 1.0 O B:HOH1043 4.7 13.9 1.0 C B:GLU347 4.8 13.2 1.0 CD B:PRO349 4.9 14.2 1.0 O B:GLU347 4.9 12.9 1.0

A.Korkegian, M.E.Black, D.Baker, B.L.Stoddard. Computational Thermostabilization of An Enzyme. Science V. 308 857 2005.
ISSN: ISSN 0036-8075
PubMed: 15879217
DOI: 10.1126/SCIENCE.1107387