Calcium in PDB 4dlv: H-Ras Set 2 CACL2/Dtt, Ordered Off

The structure of H-Ras Set 2 CACL2/Dtt, Ordered Off, PDB code: 4dlv was solved by G.Holzapfel, C.Mattos, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	28.41 / 1.57
Space group	H 3 2
Cell size a, b, c (Å), α, β, γ (°)	88.822, 88.822, 134.053, 90.00, 90.00, 120.00
R / Rfree (%)	18.8 / 21.2

The structure of H-Ras Set 2 CACL2/Dtt, Ordered Off also contains other interesting chemical elements:

Magnesium

(Mg)

3 atoms

The binding sites of Calcium atom in the H-Ras Set 2 CACL2/Dtt, Ordered Off (pdb code 4dlv). 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 H-Ras Set 2 CACL2/Dtt, Ordered Off, PDB code: 4dlv:

Calcium binding site 1 out of 1 in the H-Ras Set 2 CACL2/Dtt, Ordered Off


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of H-Ras Set 2 CACL2/Dtt, Ordered Off within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca201 b:17.5 occ:1.00 O A:PHE28 2.4 16.5 1.0 OD2 A:ASP30 2.5 20.5 1.0 O A:HOH431 2.5 26.5 1.0 O A:HOH307 2.6 24.5 1.0 C A:PHE28 3.6 15.1 1.0 CG A:ASP30 3.7 22.8 1.0 N A:ASP30 4.0 16.7 1.0 CA A:VAL29 4.3 15.6 1.0 N A:VAL29 4.4 14.3 1.0 CB A:ASP30 4.4 17.7 1.0 O A:HOH369 4.4 36.6 1.0 O A:HOH310 4.5 23.3 1.0 CA A:PHE28 4.6 17.1 1.0 O A:HOH407 4.6 53.5 1.0 OD1 A:ASP30 4.6 23.6 1.0 C A:VAL29 4.6 13.1 1.0 N A:PHE28 4.6 16.2 1.0 O A:HOH401 4.7 32.3 1.0 CB A:PHE28 4.8 19.5 1.0 CA A:ASP30 4.9 19.7 1.0

G.Holzapfel, G.Buhrman, C.Mattos. Shift in the Equilibrium Between on and Off States of the Allosteric Switch in Ras-Gppnhp Affected By Small Molecules and Bulk Solvent Composition. Biochemistry V. 51 6114 2012.
ISSN: ISSN 0006-2960
PubMed: 22845804
DOI: 10.1021/BI300509J