Potassium in PDB 2h89: Avian Respiratory Complex II with Malonate Bound

All present enzymatic activity of Avian Respiratory Complex II with Malonate Bound:
1.3.5.1;

The structure of Avian Respiratory Complex II with Malonate Bound, PDB code: 2h89 was solved by L.S.Huang, J.T.Shen, A.C.Wang, E.A.Berry, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	50.74 / 2.40
Space group	P 21 21 21
Cell size a, b, c (Å), α, β, γ (°)	70.520, 84.118, 292.212, 90.00, 90.00, 90.00
R / Rfree (%)	22.6 / 27.9

The structure of Avian Respiratory Complex II with Malonate Bound also contains other interesting chemical elements:

Iron

(Fe)

10 atoms

The binding sites of Potassium atom in the Avian Respiratory Complex II with Malonate Bound (pdb code 2h89). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Avian Respiratory Complex II with Malonate Bound, PDB code: 2h89:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in the Avian Respiratory Complex II with Malonate Bound


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Avian Respiratory Complex II with Malonate Bound within 5.0Å range: probe atom residue distance (Å) B Occ A:K622 b:50.1 occ:1.00 O A:ASN366 2.5 45.8 1.0 O A:ALA399 2.8 47.9 1.0 O A:GLY368 2.8 43.7 1.0 O A:GLU397 2.9 41.2 1.0 O A:MET367 2.9 49.5 1.0 OH A:TYR365 3.2 40.9 1.0 C A:MET367 3.3 50.0 1.0 C A:ASN366 3.6 46.3 1.0 C A:GLY368 3.7 50.4 1.0 C A:GLU397 3.7 42.2 1.0 CA A:MET367 3.9 48.1 1.0 CZ A:TYR365 3.9 42.9 1.0 C A:ALA399 4.0 50.0 1.0 N A:GLY368 4.0 51.3 1.0 CA A:GLU397 4.1 40.6 1.0 N A:MET367 4.2 49.3 1.0 CG A:GLU397 4.3 44.0 1.0 O A:HOH1116 4.3 46.1 1.0 O A:HOH1071 4.4 43.0 1.0 CA A:GLY368 4.4 48.4 1.0 CE2 A:TYR365 4.4 40.9 1.0 O A:HOH1060 4.5 47.6 1.0 N A:GLY369 4.5 51.9 1.0 N A:ALA399 4.6 51.6 1.0 CA A:GLY369 4.6 50.1 1.0 CE1 A:TYR365 4.6 43.0 1.0 O A:GLY396 4.8 40.9 1.0 CB A:ASN366 4.8 47.0 1.0 CA A:ASN366 4.8 45.7 1.0 N A:ALA398 4.8 45.3 1.0 CB A:GLU397 4.8 41.9 1.0 N A:SER400 4.9 52.0 1.0 CA A:ALA399 4.9 50.3 1.0 CA A:SER400 4.9 51.2 1.0 C A:ALA398 5.0 53.0 1.0

Potassium binding site 2 out of 2 in the Avian Respiratory Complex II with Malonate Bound


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Avian Respiratory Complex II with Malonate Bound within 5.0Å range: probe atom residue distance (Å) B Occ B:K253 b:91.3 occ:1.00 O B:HOH1047 2.7 56.6 1.0 O B:HOH1081 2.8 73.6 1.0 O B:MET191 2.9 50.1 1.0 O B:HOH1167 2.9 54.5 1.0 O B:ASP193 3.0 55.9 1.0 O B:ASP196 3.1 45.6 1.0 OG1 B:THR199 3.1 53.4 1.0 O B:HOH1163 3.4 56.8 1.0 C B:ASP193 3.9 54.5 1.0 C B:MET191 4.0 52.5 1.0 C B:ASP196 4.1 45.5 1.0 N B:ASP193 4.2 54.4 1.0 C B:ILE192 4.4 56.1 1.0 CB B:ASP196 4.5 48.0 1.0 N B:ASP196 4.5 41.2 1.0 CB B:THR199 4.5 52.9 1.0 CA B:ILE192 4.5 55.4 1.0 CA B:SER194 4.6 53.8 1.0 N B:SER194 4.6 55.0 1.0 CA B:ASP196 4.6 44.2 1.0 O B:TRP190 4.6 47.6 1.0 N B:ILE192 4.7 52.6 1.0 CA B:ASP193 4.8 54.0 1.0 C B:SER194 4.8 53.2 1.0 O B:ILE192 4.9 56.2 1.0 CA B:MET191 4.9 52.0 1.0

L.S.Huang, J.T.Shen, A.C.Wang, E.A.Berry. Crystallographic Studies of the Binding of Ligands to the Dicarboxylate Site of Complex II, and the Identity of the Ligand in the Biochim.Biophys.Acta V.1757 1073.
ISSN: ISSN 0006-3002
PubMed: 16935256
DOI: 10.1016/J.BBABIO.2006.06.015