Potassium in PDB 7zd6: Complex I From Ovis Aries, at PH7.4, Open State

All present enzymatic activity of Complex I From Ovis Aries, at PH7.4, Open State:
7.1.1.2;

The structure of Complex I From Ovis Aries, at PH7.4, Open State also contains other interesting chemical elements:

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

The binding sites of Potassium atom in the Complex I From Ovis Aries, at PH7.4, Open State (pdb code 7zd6). 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 PH7.4, Open State, PDB code: 7zd6:

Potassium binding site 1 out of 1 in the Complex I From Ovis Aries, at PH7.4, Open 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 PH7.4, Open State within 5.0Å range: probe atom residue distance (Å) B Occ 3:K804 b:56.2 occ:1.00 OE1 3:GLN110 2.9 43.5 1.0 O 3:LEU208 2.9 38.0 1.0 O 3:VAL205 2.9 34.2 1.0 O 3:ILE200 3.1 43.7 1.0 O 3:CYS203 3.2 37.4 1.0 CB 3:CYS203 3.5 30.7 1.0 CD 3:GLN110 3.6 42.1 1.0 NE2 3:GLN110 4.0 45.9 1.0 C 3:CYS203 4.0 29.9 1.0 C 3:VAL205 4.1 31.3 1.0 C 3:LEU208 4.1 38.9 1.0 SG 3:CYS203 4.2 35.8 1.0 C 3:ILE200 4.2 41.5 1.0 CA 3:CYS203 4.3 27.2 1.0 CE c:MET45 4.5 56.8 1.0 CA 3:GLY206 4.5 27.8 1.0 CG2 3:ILE200 4.5 48.4 1.0 N 3:CYS203 4.6 32.6 1.0 CG 3:GLN110 4.7 34.1 1.0 CA 3:ILE200 4.7 42.6 1.0 N 3:LEU208 4.7 31.5 1.0 N 3:GLY206 4.7 33.0 1.0 CG2 3:THR209 4.8 66.8 1.0 N 3:VAL205 4.8 29.6 1.0 CA 3:LEU208 4.9 33.9 1.0 C 3:GLY206 5.0 27.7 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