Potassium in PDB 6zkr: Native Complex I, OPEN3

All present enzymatic activity of Native Complex I, OPEN3:
1.6.99.3; 7.1.1.2;

The structure of Native Complex I, OPEN3 also contains other interesting chemical elements:

Zinc	(Zn)	1 atom
Iron	(Fe)	28 atoms

The binding sites of Potassium atom in the Native Complex I, OPEN3 (pdb code 6zkr). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total only one binding site of Potassium was determined in the Native Complex I, OPEN3, PDB code: 6zkr:

Potassium binding site 1 out of 1 in the Native Complex I, OPEN3


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Native Complex I, OPEN3 within 5.0Å range: probe atom residue distance (Å) B Occ 3:K804 b:48.1 occ:1.00 O 3:LEU208 2.8 34.5 1.0 O 3:CYS203 2.9 36.8 1.0 OE1 3:GLN110 2.9 28.4 1.0 O 3:ILE200 2.9 39.5 1.0 O 3:VAL205 3.0 25.3 1.0 CB 3:CYS203 3.4 47.1 1.0 CD 3:GLN110 3.7 25.7 1.0 C 3:CYS203 3.7 31.5 1.0 C 3:ILE200 4.0 36.1 1.0 C 3:LEU208 4.0 29.3 1.0 CA 3:CYS203 4.0 28.9 1.0 SG 3:CYS203 4.0 76.0 1.0 C 3:VAL205 4.2 20.2 1.0 N 3:CYS203 4.3 25.8 1.0 NE2 3:GLN110 4.4 30.9 1.0 CA 3:ILE200 4.4 34.4 1.0 CG 3:GLN110 4.5 26.0 1.0 CG2 3:THR209 4.7 51.2 1.0 N 3:VAL205 4.7 26.5 1.0 CA 3:THR209 4.7 34.8 1.0 N 3:THR209 4.7 29.4 1.0 CG2 3:ILE200 4.8 41.6 1.0 CA 3:GLY206 4.8 20.1 1.0 N 3:LEU208 4.8 29.2 1.0 N 3:PRO204 4.9 28.8 1.0 O 3:ILE199 4.9 39.9 1.0 O 3:ASP201 4.9 27.5 1.0 CA 3:LEU208 4.9 33.7 1.0 SD c:MET45 4.9 64.9 1.0 CB 3:GLN110 4.9 22.0 1.0 N 3:GLY206 5.0 20.0 1.0

D.Kampjut, L.A.Sazanov. The Coupling Mechanism of Mammalian Respiratory Complex I. Science V. 370 2020.
ISSN: ESSN 1095-9203
PubMed: 32972993
DOI: 10.1126/SCIENCE.ABC4209