Potassium in PDB 5fk6: Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca

The structure of Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca, PDB code: 5fk6 was solved by L.Huang, D.M.J.Lilley, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	57.615 / 2.50
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	62.170, 62.170, 153.359, 90.00, 90.00, 90.00
R / Rfree (%)	21.35 / 27.55

The structure of Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca also contains other interesting chemical elements:

Barium

(Ba)

12 atoms

The binding sites of Potassium atom in the Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca (pdb code 5fk6). This binding sites where shown within 5.0 Angstroms radius around Potassium atom.
In total 3 binding sites of Potassium where determined in the Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca, PDB code: 5fk6:
Jump to Potassium binding site number: 1; 2; 3;

Potassium binding site 1 out of 3 in the Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca within 5.0Å range: probe atom residue distance (Å) B Occ A:K1108 b:0.8 occ:1.00 O4 A:U80 2.9 0.8 1.0 O6 A:G71 3.3 0.9 1.0 O6 A:G79 3.4 0.3 1.0 N6 A:A70 3.5 0.9 1.0 N4 A:C72 3.9 0.4 1.0 C4 A:U80 4.0 0.4 1.0 C6 A:A70 4.2 0.7 1.0 N3 A:U80 4.4 0.6 1.0 C6 A:G71 4.4 0.7 1.0 C6 A:G79 4.4 0.1 1.0 O4 A:U81 4.7 0.7 1.0 C5 A:A70 4.7 0.5 1.0 N7 A:A70 4.8 0.4 1.0 N7 A:G71 4.8 0.9 1.0 N1 A:A70 5.0 1.0 1.0

Potassium binding site 2 out of 3 in the Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 2 of Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca within 5.0Å range: probe atom residue distance (Å) B Occ A:K1109 b:0.6 occ:1.00 O6 A:G82 3.1 0.9 1.0 O4 A:U81 3.3 0.7 1.0 C4 A:U81 4.1 0.4 1.0 C6 A:G82 4.2 0.5 1.0 OP1 A:U67 4.3 0.9 1.0 N4 A:C69 4.3 0.4 1.0 N7 A:G82 4.5 0.7 1.0 C5 A:U81 4.5 0.5 1.0 N6 A:A83 4.6 0.3 1.0 N6 A:A70 4.6 0.9 1.0 C5 A:G82 4.7 0.2 1.0 OP2 A:G68 4.8 0.2 1.0

Potassium binding site 3 out of 3 in the Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 3 of Sam-I Riboswitch Bearing the H. Marismortui Kt-7 Variant 3BN Is Ca within 5.0Å range: probe atom residue distance (Å) B Occ A:K1110 b:0.9 occ:1.00 O6 A:G89 3.3 0.8 1.0 O4 A:U5 3.4 1.0 1.0 O4 A:U88 3.4 0.1 1.0 O4 A:U4 3.5 0.9 1.0 N6 A:A90 3.7 0.8 1.0 C4 A:U88 4.2 92.6 1.0 C6 A:G89 4.3 0.8 1.0 C4 A:U5 4.4 0.4 1.0 N6 A:A6 4.6 0.7 1.0 N7 A:G89 4.6 0.1 1.0 C4 A:U4 4.7 0.3 1.0 C5 A:U88 4.7 89.6 1.0 N3 A:U5 4.9 0.8 1.0 C6 A:A90 4.9 0.8 1.0 C5 A:G89 4.9 0.7 1.0

L.Huang, J.Wang, D.M.J.Lilley. A Critical Base Pair in K-Turns Determines the Conformational Class Adopted, and Correlates with Biological Function. Nucleic Acids Res. V. 44 5390 2016.
ISSN: ISSN 0305-1048
PubMed: 27016741
DOI: 10.1093/NAR/GKW201