Potassium in PDB 3gx3: Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah

The structure of Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah, PDB code: 3gx3 was solved by R.K.Montange, R.T.Batey, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	19.74 / 2.70
Space group	P 43 21 2
Cell size a, b, c (Å), α, β, γ (°)	62.427, 62.427, 158.221, 90.00, 90.00, 90.00
R / Rfree (%)	23.1 / 29.1

The structure of Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah also contains other interesting chemical elements:

Magnesium

(Mg)

9 atoms

The binding sites of Potassium atom in the Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah (pdb code 3gx3). 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 Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah, PDB code: 3gx3:

Potassium binding site 1 out of 1 in the Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah


Mono view


Stereo pair view

A full contact list of Potassium with other atoms in the K binding site number 1 of Crystal Structure of the T. Tengcongensis Sam-I Riboswitch Variant U34C/A94G Bound with Sah within 5.0Å range: probe atom residue distance (Å) B Occ A:K210 b:78.9 occ:1.00 O4 A:U88 3.3 36.5 1.0 O4 A:U5 3.5 47.7 1.0 O6 A:G89 3.9 37.2 1.0 O4 A:U4 4.0 50.5 1.0 C4 A:U88 4.2 32.9 1.0 N6 A:A6 4.5 35.9 1.0 C4 A:U5 4.6 42.4 1.0 C5 A:U88 4.7 31.5 1.0 N6 A:A90 4.8 41.0 1.0 C4 A:U4 5.0 44.9 1.0

R.K.Montange, E.Mondragon, D.Van Tyne, A.D.Garst, P.Ceres, R.T.Batey. Discrimination Between Closely Related Cellular Metabolites By the Sam-I Riboswitch. J.Mol.Biol. V. 396 761 2010.
ISSN: ISSN 0022-2836
PubMed: 20006621
DOI: 10.1016/J.JMB.2009.12.007