Sodium in the structure of Crystal Structures Of Mutant (BETAK87T) Tryptophan Synthase ALPHA2 BETA2 Complex With Ligands Bound to The Active Sites of the Alpha and Beta Subunits Reveal Ligand-Induced Conformational Changes (pdb 2tsy)

The binding sites of Sodium atom in the structure of Crystal Structures Of Mutant (BETAK87T) Tryptophan Synthase ALPHA2 BETA2 Complex With Ligands Bound to The Active Sites of the Alpha and Beta Subunits Reveal Ligand-Induced Conformational Changes (pdb code 2tsy). This binding sites where shown with 5.0 Angstroms radius around Sodium atom. The 2tsy structure was solved by S.RHEE, K.D.PARRIS, C.C.HYDE, S.A.AHMED, E.W.MILES, D.R.DAVIES, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 8.0-2.5 Space group C121 a (A) 185.700 b (A) 62.600 c (A) 67.900 alpha (°) 90.00 beta (°) 94.40 gamma (°) 90.00 Rfactor (%) 18.7 Rfree (%) n/a Sodium Binding Sites: Sodium binding site 1 out of 1 in 2tsy Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Sodium in the PDB 2tsy. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Sodium atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: B: Val231, B: Gly232, B: Gly233, B: Gly268, B: Pro270, B: Leu304, B: Phe306, B: Pro307, B: Ser308, B: Val309, B: Hoh425, B: Hoh442, conact list: Atom Atom Distance (A) Na O B:Val231 4.56 Na C B:Val231 4.87 Na O B:Gly232 2.28 Na N B:Gly232 4.55 Na C B:Gly232 3.18 Na CA B:Gly232 3.54 Na N B:Gly233 4.33 Na CA B:Gly233 4.85 Na O B:Gly268 4.21 Na CD B:Pro270 4.41 Na CG B:Pro270 3.82 Na O B:Leu304 4.44 Na O B:Phe306 2.34 Na N B:Phe306 4.45 Na CB B:Phe306 3.86 Na CD1 B:Phe306 3.91 Na C B:Phe306 3.51 Na CG B:Phe306 4.35 Na CA B:Phe306 4.14 Na N B:Pro307 4.58 Na C B:Pro307 4.84 Na CA B:Pro307 4.94 Na O B:Ser308 2.53 Na N B:Ser308 4.22 Na C B:Ser308 3.70 Na CA B:Ser308 4.64 Na N B:Val309 4.52 Na CB B:Val309 4.77 Na CA B:Val309 4.55 Na O B:Hoh425 2.42 Na O B:Hoh442 2.21 interactive model: