Calcium in PDB 3lbi: Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate

The structure of Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate, PDB code: 3lbi was solved by G.Holzapfel, G.Buhrman, C.Mattos, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	25.40 / 2.09
Space group	H 3 2
Cell size a, b, c (Å), α, β, γ (°)	88.716, 88.716, 134.583, 90.00, 90.00, 120.00
R / Rfree (%)	17.5 / 21.7

The structure of Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate also contains other interesting chemical elements:

Magnesium

(Mg)

2 atoms

The binding sites of Calcium atom in the Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate (pdb code 3lbi). This binding sites where shown within 5.0 Angstroms radius around Calcium atom.
In total 2 binding sites of Calcium where determined in the Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate, PDB code: 3lbi:
Jump to Calcium binding site number: 1; 2;

Calcium binding site 1 out of 2 in the Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca167 b:26.8 occ:1.00 O A:PHE28 2.4 26.4 1.0 OD1 A:ASP30 2.5 29.4 1.0 O A:HOH244 2.5 32.0 1.0 O A:HOH274 2.6 37.5 1.0 C A:PHE28 3.6 25.2 1.0 CG A:ASP30 3.7 29.3 1.0 N A:ASP30 4.0 24.9 1.0 CA A:VAL29 4.3 22.9 1.0 O A:HOH252 4.4 42.3 1.0 N A:VAL29 4.4 25.0 1.0 O A:HOH217 4.5 31.5 1.0 CB A:ASP30 4.5 25.2 1.0 OD2 A:ASP30 4.6 30.1 1.0 CA A:PHE28 4.6 23.9 1.0 C A:VAL29 4.7 25.0 1.0 N A:PHE28 4.8 21.7 1.0 CA A:ASP30 4.9 26.1 1.0 CB A:PHE28 4.9 29.9 1.0

Calcium binding site 2 out of 2 in the Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 2 of Ras Soaked in Magnesium Acetate and Back Soaked in Calcium Acetate within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca169 b:47.1 occ:1.00 O A:ASP107 2.6 42.6 1.0 O A:HOH262 2.6 32.4 1.0 O A:TYR137 2.6 26.9 1.0 O A:ACT719 2.7 36.7 1.0 OXT A:ACT719 2.7 36.9 1.0 O A:HOH293 2.7 37.4 1.0 C A:ACT719 3.1 41.1 1.0 C A:ASP107 3.4 40.4 1.0 C A:TYR137 3.7 27.5 1.0 CA A:ASP108 4.1 38.6 1.0 N A:ASP108 4.2 39.1 1.0 CA A:TYR137 4.2 26.0 1.0 CA A:ASP107 4.2 43.1 1.0 NH2 A:ARG97 4.3 34.6 1.0 CB A:TYR137 4.5 28.2 1.0 CB A:ASP107 4.5 45.8 1.0 N A:VAL109 4.6 32.9 1.0 CH3 A:ACT719 4.6 33.5 1.0 CE A:MET111 4.7 25.8 1.0 OD1 A:ASP108 4.7 51.9 1.0 O A:HOH288 4.7 31.4 1.0 N A:GLY138 4.7 26.1 1.0 OD2 A:ASP107 4.8 50.2 1.0 CG A:ASP107 4.8 51.8 1.0 C A:ASP108 4.8 36.3 1.0 O A:VAL109 4.8 24.1 1.0 CG2 A:ILE139 4.8 19.6 1.0 NE A:ARG97 5.0 34.8 1.0

G.Buhrman, G.Holzapfel, S.Fetics, C.Mattos. Allosteric Modulation of Ras Positions Q61 For A Direct Role in Catalysis. Proc.Natl.Acad.Sci.Usa V. 107 4931 2010.
ISSN: ISSN 0027-8424
PubMed: 20194776
DOI: 10.1073/PNAS.0912226107