Potassium in PDB 2ygh: Sam-I Riboswitch with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine

The structure of Sam-I Riboswitch with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine, PDB code: 2ygh was solved by K.Schroeder, P.Daldrop, D.Lilley, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	54.71 / 2.60
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	58.460, 58.460, 155.260, 90.00, 90.00, 90.00
R / Rfree (%)	19.975 / 25.929

The structure of Sam-I Riboswitch with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine also contains other interesting chemical elements:

Sodium

(Na)

4 atoms

The binding sites of Potassium atom in the Sam-I Riboswitch with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine (pdb code 2ygh). 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-I Riboswitch with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine, PDB code: 2ygh:

Potassium binding site 1 out of 1 in the Sam-I Riboswitch with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine


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 with A G2NA Mutation in the Kink Turn in Complex with S-Adenosylmethionine within 5.0Å range: probe atom residue distance (Å) B Occ A:K1098 b:21.8 occ:1.00 N7 A:G74 2.9 29.9 1.0 O6 A:G74 3.2 32.4 1.0 C5 A:G74 3.5 28.9 1.0 O A:HOH2019 3.6 17.4 1.0 C6 A:G74 3.6 29.8 1.0 C8 A:G74 4.0 30.2 1.0 N7 A:G73 4.5 25.1 1.0 C4 A:G74 4.8 29.8 1.0 OP2 A:A76 4.8 35.6 1.0 N1 A:G74 5.0 29.8 1.0 OP2 A:G73 5.0 23.5 1.0 OP2 A:G74 5.0 30.9 1.0 N9 A:G74 5.0 31.3 1.0

K.T.Schroeder, P.Daldrop, D.M.J.Lilley. Rna Tertiary Interactions in A Riboswitch Stabilize the Structure of A Kink Turn. Structure V. 19 1233 2011.
ISSN: ISSN 0969-2126
PubMed: 21893284
DOI: 10.1016/J.STR.2011.07.003