Calcium in PDB 1m1u: An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain

The structure of An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain, PDB code: 1m1u was solved by J.-P.Xiong, R.Li, M.Essafi, T.Stehle, M.A.Arnaout, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	8.00 / 2.30
Space group	P 43
Cell size a, b, c (Å), α, β, γ (°)	45.700, 45.700, 94.800, 90.00, 90.00, 90.00
R / Rfree (%)	18.8 / 24.8

The binding sites of Calcium atom in the An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain (pdb code 1m1u). 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 An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain, PDB code: 1m1u:

Calcium binding site 1 out of 1 in the An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain


Mono view


Stereo pair view

A full contact list of Calcium with other atoms in the Ca binding site number 1 of An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain within 5.0Å range: probe atom residue distance (Å) B Occ A:Ca400 b:5.2 occ:1.00 O A:HOH431 2.2 17.7 1.0 O A:HOH449 2.3 29.5 1.0 OG A:SER144 2.3 14.6 1.0 OG A:SER142 2.3 16.7 1.0 OG1 A:THR209 2.4 22.0 1.0 CB A:SER144 3.3 12.7 1.0 CB A:SER142 3.4 4.8 1.0 CB A:THR209 3.6 11.9 1.0 CG2 A:THR209 4.0 2.0 1.0 O A:GLU244 4.0 15.1 1.0 OD2 A:ASP242 4.0 8.8 1.0 OD1 A:ASP140 4.1 6.0 1.0 OD2 A:ASP140 4.1 10.2 1.0 N A:SER144 4.1 14.8 1.0 OD1 A:ASP242 4.2 14.2 1.0 CA A:SER144 4.3 17.0 1.0 CG A:ASP140 4.5 8.9 1.0 CG A:ASP242 4.5 14.2 1.0 CA A:SER142 4.6 7.4 1.0 CA A:THR209 4.7 12.6 1.0 CG1 A:ILE145 4.7 4.3 1.0 N A:ILE145 4.7 27.6 1.0 C A:SER142 4.8 3.6 1.0 CD1 A:ILE145 4.8 2.0 1.0 N A:THR209 4.8 10.4 1.0 C A:SER144 4.9 21.3 1.0 N A:GLY143 5.0 16.8 1.0

J.P.Xiong, R.Li, M.Essafi, T.Stehle, M.A.Arnaout. An Isoleucine-Based Allosteric Switch Controls Affinity and Shape Shifting in Integrin CD11B A-Domain. J.Biol.Chem. V. 275 38762 2000.
ISSN: ISSN 0021-9258
PubMed: 11034990
DOI: 10.1074/JBC.C000563200