› 3iqn

X-ray diffraction
2.7Å resolution

Free-state structural transitions of the SAM-I riboswitch

Released:
DOI: 10.2210/pdb3iqn/pdb
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PDB entry 3iqn coloured by chain, front view.
PDB entry 3iqn coloured by chain, side view.
PDB entry 3iqn coloured by chain, top view.
Source organism: Synthetic construct
Primary publication:
Free state conformational sampling of the SAM-I riboswitch aptamer domain.
Stoddard CD, Montange RK, Hennelly SP, Rambo RP, Sanbonmatsu KY, Batey RT
Structure 18 787-97 (2010)
PMID: 20637415

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domain:

Structure analysis Details

Assemblies composition:
monomeric (preferred)
homo dimer
Assembly name:
PDBe Complex ID:
PDB-CPX-290232 (preferred)
Entry contents:
1 distinct RNA molecule
Macromolecule:
SAM-I riboswitch Chain: A
Molecule details ›
Chain: A
Length: 94 nucleotides
Theoretical weight: 30.59 KDa
Source organism: Synthetic construct
Expression system: Not provided
Sequence domains: SAM riboswitch aptamer (S box leader)

Ligands and Environments

3 bound ligands:
Ligand BA 5 x BA
Ligand K 6 x K
Ligand SAM 1 x SAM
No modified residues

Experiments and Validation Details

wwPDB Validation report is not available for this entry.
X-ray source: OTHER
Spacegroup: P43212
Unit cell:
a: 61.98Å b: 61.98Å c: 159.07Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.259 0.259 0.299
Expression system: Not provided

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Citations

30 review citations

A decade of riboswitches.
Serganov et al. (2013)
29 more

7 mentions without citation

Riboswitch structure in the ligand-free state.
Liberman et al. (2012)
6 more

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