Potassium in PDB 7zdm: Complex I From Ovis Aries at PH5.5, Closed State

All present enzymatic activity of Complex I From Ovis Aries at PH5.5, Closed State:
7.1.1.2;

The structure of Complex I From Ovis Aries at PH5.5, Closed State also contains other interesting chemical elements:

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

The binding sites of Potassium atom in the Complex I From Ovis Aries at PH5.5, Closed State (pdb code 7zdm). 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 Complex I From Ovis Aries at PH5.5, Closed State, PDB code: 7zdm:

Potassium binding site 1 out of 1 in the Complex I From Ovis Aries at PH5.5, Closed State


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Complex I From Ovis Aries at PH5.5, Closed State within 5.0Å range: probe atom residue distance (Å) B Occ 3:K804 b:81.5 occ:1.00 O 3:ILE200 2.9 30.9 1.0 O 3:LEU208 3.0 23.6 1.0 OE1 3:GLN110 3.0 48.7 1.0 O 3:VAL205 3.1 26.5 1.0 O 3:CYS203 3.2 40.2 1.0 CB 3:CYS203 3.5 40.2 1.0 CD 3:GLN110 3.7 43.5 1.0 C 3:ILE200 4.0 34.5 1.0 C 3:CYS203 4.0 37.0 1.0 C 3:LEU208 4.0 20.0 1.0 NE2 3:GLN110 4.1 40.2 1.0 CA 3:CYS203 4.2 30.9 1.0 SG 3:CYS203 4.2 68.5 1.0 C 3:VAL205 4.2 26.3 1.0 CG2 3:ILE200 4.3 20.6 1.0 CA 3:ILE200 4.4 33.1 1.0 N 3:CYS203 4.4 27.6 1.0 CA 3:GLY206 4.7 29.4 1.0 N 3:LEU208 4.8 15.4 1.0 CG 3:GLN110 4.8 39.4 1.0 CG2 3:THR209 4.8 50.4 1.0 SD c:MET45 4.9 81.7 1.0 N 3:THR209 4.9 25.3 1.0 CA 3:THR209 4.9 36.5 1.0 CA 3:LEU208 4.9 15.3 1.0 N 3:GLY206 4.9 25.6 1.0

V.Kravchuk, O.Petrova, D.Kampjut, A.Wojciechowska-Bason, Z.Breese, L.Sazanov. A Universal Coupling Mechanism of Respiratory Complex I. Nature V. 609 808 2022.
ISSN: ESSN 1476-4687
PubMed: 36104567
DOI: 10.1038/S41586-022-05199-7