Cobalt in the structure of Corrinoid Iron-Sulfur Protein (pdb 2h9a)

The binding sites of Cobalt atom in the structure of Corrinoid Iron-Sulfur Protein (pdb code 2h9a). This binding sites where shown with 5.0 Angstroms radius around Cobalt atom. The 2h9a structure was solved by H.DOBBEK, with X-Ray Crystallography technique, brief refinement statistics is given in the table below: Resolution (A) 20.0-1.9 Space group C121 a (A) 158.030 b (A) 44.270 c (A) 100.660 alpha (°) 90.00 beta (°) 118.63 gamma (°) 90.00 Rfactor (%) 20.3 Rfree (%) 26 Cobalt Binding Sites: Cobalt binding site 1 out of 1 in 2h9a Click to enlarge Click to enlarge Mono- and Stereo- picture of 5.0 Angstrom coordination sphere 1 of Cobalt in the PDB 2h9a. Coordination sphere was calculated for all residues within 5.0 Angstroms distance from the central Cobalt atom, shown by VdW sphere Residues shown as a stick model or VDW spheres: A: Thr374, A: B121442, A: Hoh1483, conact list: Atom Atom Distance (A) Co CB A:Thr374 4.42 Co CG2 A:Thr374 4.34 Co OG1 A:Thr374 3.57 Co CA A:Thr374 4.75 Co C18 A:B121442 4.15 Co C11 A:B121442 2.94 Co C1 A:B121442 2.93 Co C8 A:B121442 4.18 Co C2 A:B121442 4.21 Co C46 A:B121442 4.76 Co N22 A:B121442 1.89 Co C35 A:B121442 4.91 Co C17 A:B121442 4.27 Co N21 A:B121442 1.88 Co C12 A:B121442 4.29 Co C19 A:B121442 2.90 Co C41 A:B121442 4.96 Co CO A:B121442 0.00 Co C15 A:B121442 3.44 Co C37 A:B121442 4.99 Co C16 A:B121442 2.98 Co C6 A:B121442 2.98 Co C5 A:B121442 3.36 Co C4 A:B121442 2.91 Co C10 A:B121442 3.25 Co C13 A:B121442 4.27 Co C20 A:B121442 3.42 Co C48 A:B121442 4.93 Co C9 A:B121442 2.84 Co C14 A:B121442 2.99 Co N24 A:B121442 1.90 Co N23 A:B121442 1.92 Co C7 A:B121442 4.29 Co C53 A:B121442 4.96 Co C3 A:B121442 4.22 Co C26 A:B121442 4.64 Co O A:Hoh1483 2.54 interactive model: