Potassium in PDB 8zex: Biosensor HALOKBP1A

The structure of Biosensor HALOKBP1A, PDB code: 8zex was solved by Y.Wen, R.E.Campbell, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	18.24 / 1.66
Space group	P 1
Cell size a, b, c (Å), α, β, γ (°)	44.59, 50.28, 58.83, 94, 101.32, 99.97
R / Rfree (%)	18.3 / 20.4

The binding sites of Potassium atom in the Biosensor HALOKBP1A (pdb code 8zex). 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 Biosensor HALOKBP1A, PDB code: 8zex:

Potassium binding site 1 out of 1 in the Biosensor HALOKBP1A


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Biosensor HALOKBP1A within 5.0Å range: probe atom residue distance (Å) B Occ A:K501 b:34.8 occ:1.00 O A:GLY256 2.6 25.6 1.0 O A:ALA191 2.8 30.1 1.0 O A:ILE258 2.8 29.1 1.0 O A:ILE261 2.8 28.1 1.0 O A:VAL188 2.8 30.2 1.0 O A:LYS189 3.1 28.2 1.0 O A:HOH764 3.2 28.5 1.0 C A:LYS189 3.7 31.8 1.0 C A:ILE258 3.7 26.9 1.0 C A:VAL188 3.8 29.0 1.0 C A:GLY256 3.9 27.7 1.0 C A:ALA191 3.9 30.3 1.0 N A:ILE258 3.9 25.8 1.0 C A:ILE261 3.9 28.3 1.0 CA A:LYS189 4.0 29.5 1.0 CB A:PHE187 4.0 25.9 1.0 N A:ILE261 4.2 31.0 1.0 N A:ALA191 4.2 27.7 1.0 N A:LYS189 4.3 27.7 1.0 CA A:ILE261 4.4 28.4 1.0 CA A:ASN257 4.4 25.6 1.0 CB A:ILE261 4.5 29.3 1.0 N A:SER259 4.5 26.4 1.0 C A:ASN257 4.5 26.2 1.0 CA A:ALA191 4.5 28.7 1.0 CA A:ILE258 4.5 26.7 1.0 CA A:SER259 4.6 27.6 1.0 N A:ASN257 4.6 23.3 1.0 N A:GLY260 4.6 29.6 1.0 N A:ASP190 4.7 28.9 1.0 N A:VAL188 4.7 26.5 1.0 CB A:ALA191 4.8 30.8 1.0 C A:PHE187 4.8 27.9 1.0 C A:ASP190 4.9 29.9 1.0 CA A:GLY256 4.9 23.4 1.0 CA A:VAL188 4.9 27.4 1.0 CG A:PHE187 4.9 27.8 1.0 N A:GLY192 5.0 27.9 1.0

D.Cheng, Z.Ouyang, X.He, Y.Nasu, Y.Wen, T.Terai, R.E.Campbell. High-Performance Chemigenetic Potassium Ion Indicator. J.Am.Chem.Soc. 2024.
ISSN: ESSN 1520-5126
PubMed: 39601449
DOI: 10.1021/JACS.4C10917