Potassium in PDB 8tjj: Sam-Dependent Methyltransferase Redm Bound to Sam

The structure of Sam-Dependent Methyltransferase Redm Bound to Sam, PDB code: 8tjj was solved by P.Daniel-Ivad, K.S.Ryan, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	45.64 / 1.82
Space group	P 1 21 1
Cell size a, b, c (Å), α, β, γ (°)	113.86, 58.78, 113.92, 90, 103.11, 90
R / Rfree (%)	17.5 / 21.8

The structure of Sam-Dependent Methyltransferase Redm Bound to Sam also contains other interesting chemical elements:

Sodium

(Na)

1 atom

The binding sites of Potassium atom in the Sam-Dependent Methyltransferase Redm Bound to Sam (pdb code 8tjj). 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 Sam-Dependent Methyltransferase Redm Bound to Sam, PDB code: 8tjj:

Potassium binding site 1 out of 1 in the Sam-Dependent Methyltransferase Redm Bound to Sam


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Sam-Dependent Methyltransferase Redm Bound to Sam within 5.0Å range: probe atom residue distance (Å) B Occ C:K402 b:64.8 occ:1.00 O C:HOH754 3.5 39.9 1.0 OD1 D:ASP148 3.7 34.2 1.0 OD1 C:ASP148 3.7 34.1 1.0 O D:HOH553 4.1 45.4 1.0 O C:PRO147 4.3 16.7 1.0 O D:PRO147 4.4 20.8 1.0 CB C:ASP151 4.5 19.4 1.0 C C:PRO147 4.5 21.3 1.0 CB D:PRO147 4.5 18.5 1.0 C D:PRO147 4.6 21.8 1.0 CB D:ASP151 4.6 23.1 1.0 N C:ASP148 4.7 19.4 1.0 CB C:PRO147 4.7 19.9 1.0 CA C:ASP148 4.7 20.4 1.0 CG C:ASP151 4.7 28.1 1.0 N D:ASP148 4.7 21.4 1.0 CA D:ASP148 4.8 22.8 1.0 CG C:ASP148 4.9 30.3 1.0 CG D:ASP151 4.9 25.7 1.0 CG D:ASP148 4.9 32.4 1.0 OD2 C:ASP151 5.0 36.0 1.0

P.Daniel-Ivad, K.S.Ryan. Structure of Methyltransferase Redm That Forms the Dimethylpyrrolinium of the Bisindole Reductasporine. J.Biol.Chem. 05520 2023.
ISSN: ESSN 1083-351X
PubMed: 38042494
DOI: 10.1016/J.JBC.2023.105520