Potassium in PDB 4ya9: Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep

All present enzymatic activity of Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep:
3.4.25.1;

The structure of Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep, PDB code: 4ya9 was solved by E.M.Huber, M.Groll, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	15.00 / 2.70
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	135.380, 299.690, 145.310, 90.00, 112.83, 90.00
R / Rfree (%)	22 / 24.1

The structure of Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep also contains other interesting chemical elements:

Magnesium	(Mg)	8 atoms
Chlorine	(Cl)	1 atom

The binding sites of Potassium atom in the Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep (pdb code 4ya9). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 2 binding sites of Potassium where determined in the Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep, PDB code: 4ya9:
Jump to Potassium binding site number: 1; 2;

Potassium binding site 1 out of 2 in the Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep within 5.0Å range: probe atom residue distance (Å) B Occ c:K301 b:30.0 occ:1.00 SG H:CYS31 2.4 45.4 1.0 OD2 c:ASJ4 2.5 56.1 1.0 CB H:CYS31 2.8 42.8 1.0 CG c:ASJ4 3.7 54.2 1.0 N H:ALA32 3.8 37.2 1.0 O H:ALA32 3.8 36.5 1.0 CA H:CYS31 3.9 41.4 1.0 C H:CYS31 4.0 40.2 1.0 OD1 c:ASJ4 4.2 57.8 1.0 C H:ALA32 4.2 37.1 1.0 CG H:LYS33 4.6 39.1 1.0 CA H:ALA32 4.6 37.5 1.0 OG H:SER20 4.7 44.8 1.0 O H:CYS31 4.8 42.3 1.0 N H:LYS33 4.8 38.8 1.0 CB c:ASJ4 4.9 52.7 1.0 CB H:SER20 4.9 42.2 1.0

Potassium binding site 2 out of 2 in the Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Yeast 20S Proteasome BETA2-H114D Mutant in Complex with Ac-Lad-Ep within 5.0Å range: probe atom residue distance (Å) B Occ f:K102 b:30.0 occ:1.00 OD1 f:ASJ4 2.4 51.3 1.0 SG V:CYS31 2.5 50.3 1.0 OD2 f:ASJ4 2.9 57.0 1.0 CG f:ASJ4 3.0 52.8 1.0 CB V:CYS31 3.4 48.9 1.0 OG V:SER20 3.6 44.7 1.0 O V:HOH410 3.9 34.4 1.0 CB V:SER20 4.1 41.5 1.0 CB V:ALA49 4.2 35.3 1.0 CG V:LYS33 4.5 35.8 1.0 CB f:ASJ4 4.6 52.1 1.0 CA V:CYS31 4.7 47.2 1.0 O V:ALA32 4.8 44.4 1.0 CE V:LYS33 4.8 34.8 1.0 C V:CYS31 4.9 46.1 1.0 N V:ALA32 4.9 44.0 1.0 SG W:CYS128 5.0 46.8 1.0

E.M.Huber, G.De Bruin, W.Heinemeyer, G.Paniagua Soriano, H.S.Overkleeft, M.Groll. Systematic Analyses of Substrate Preferences of 20S Proteasomes Using Peptidic Epoxyketone Inhibitors. J.Am.Chem.Soc. V. 137 7835 2015.
ISSN: ESSN 1520-5126
PubMed: 26020686
DOI: 10.1021/JACS.5B03688