Magnesium in PDB 2qwy: Sam-II Riboswitch Bound to S-Adenosylmethionine

The structure of Sam-II Riboswitch Bound to S-Adenosylmethionine, PDB code: 2qwy was solved by S.D.Gilbert, R.P.Rambo, D.Van Tyne, R.T.Batey, with X-Ray Crystallography technique. A brief refinement statistics is given in the table below:

Resolution Low / High (Å)	19.90 / 2.80
Space group	C 1 2 1
Cell size a, b, c (Å), α, β, γ (°)	115.258, 48.095, 109.617, 90.00, 108.25, 90.00
R / Rfree (%)	20.6 / 26.3

The structure of Sam-II Riboswitch Bound to S-Adenosylmethionine also contains other interesting chemical elements:

Caesium

(Cs)

2 atoms

The binding sites of Magnesium atom in the Sam-II Riboswitch Bound to S-Adenosylmethionine (pdb code 2qwy). This binding sites where shown within 5.0 Angstroms radius around Magnesium atom.
In total only one binding site of Magnesium was determined in the Sam-II Riboswitch Bound to S-Adenosylmethionine, PDB code: 2qwy:

Magnesium binding site 1 out of 1 in the Sam-II Riboswitch Bound to S-Adenosylmethionine


Mono view


Stereo pair view

A full contact list of Magnesium with other atoms in the Mg binding site number 1 of Sam-II Riboswitch Bound to S-Adenosylmethionine within 5.0Å range: probe atom residue distance (Å) B Occ A:Mg102 b:51.0 occ:1.00 O3 A:PO40 3.3 82.0 1.0 O2 B:PO40 3.6 78.4 1.0 N7 A:G1 3.8 54.9 1.0 OP1 A:G1 3.9 69.3 1.0 C8 A:G1 4.4 55.3 1.0 N7 B:G1 4.5 51.2 1.0 P A:PO40 4.6 81.5 1.0 OP2 B:G1 4.7 65.1 1.0 O2 A:PO40 4.8 77.6 1.0 P B:PO40 5.0 78.5 1.0

S.D.Gilbert, R.P.Rambo, D.Van Tyne, R.T.Batey. Structure of the Sam-II Riboswitch Bound to S-Adenosylmethionine. Nat.Struct.Mol.Biol. V. 15 177 2008.
ISSN: ISSN 1545-9993
PubMed: 18204466
DOI: 10.1038/NSMB.1371