Potassium in PDB 8hze: A New Fluorescent Rna Aptamer Bound with N

The structure of A New Fluorescent Rna Aptamer Bound with N, PDB code: 8hze was solved by K.Y.Huang, A.M.Ren, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	38.19 / 1.59
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	76.151, 45.87, 57.116, 90, 115.08, 90
R / Rfree (%)	20 / 23.4

The structure of A New Fluorescent Rna Aptamer Bound with N also contains other interesting chemical elements:

Magnesium

(Mg)

11 atoms

The binding sites of Potassium atom in the A New Fluorescent Rna Aptamer Bound with N (pdb code 8hze). 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 A New Fluorescent Rna Aptamer Bound with N, PDB code: 8hze:

Potassium binding site 1 out of 1 in the A New Fluorescent Rna Aptamer Bound with N


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of A New Fluorescent Rna Aptamer Bound with N within 5.0Å range: probe atom residue distance (Å) B Occ A:K107 b:29.0 occ:1.00 N7 A:A21 2.9 24.2 1.0 O2' A:G20 3.0 22.8 1.0 O3' A:G20 3.0 25.8 1.0 C8 A:A21 3.5 25.8 1.0 C3' A:G20 3.8 22.6 1.0 OP1 A:A21 3.8 26.4 1.0 N6 A:A22 3.9 25.1 1.0 C2' A:G20 3.9 22.5 1.0 C5 A:A21 4.0 25.0 1.0 C4' A:G20 4.0 23.1 1.0 P A:A21 4.1 28.2 1.0 N6 A:A21 4.4 29.0 1.0 C6 A:A21 4.6 27.1 1.0 O5' A:A21 4.7 26.7 1.0 C6 A:A22 4.7 25.7 1.0 N9 A:A21 4.8 25.2 1.0 N7 A:A22 4.8 22.2 1.0 O4' A:G20 4.9 23.6 1.0 C1' A:G20 5.0 23.3 1.0

K.Huang, Q.Song, M.Fang, D.Yao, X.Shen, X.Xu, X.Chen, L.Zhu, Y.Yang, A.Ren. Structural Basis of A Small Monomeric Clivia Fluorogenic Rna with A Large Stokes Shift. Nat.Chem.Biol. 2024.
ISSN: ESSN 1552-4469
PubMed: 38816645
DOI: 10.1038/S41589-024-01633-1