4GXY image
Deposition Date 2012-09-04
Release Date 2012-10-17
Last Version Date 2024-02-28
Entry Detail
PDB ID:
4GXY
Keywords:
RNA
Title:
RNA structure
Biological Source:
Source Organism:
(Taxon ID: )
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.05 Å
R-Value Free:
0.25
R-Value Work:
0.20
R-Value Observed:
0.21
Space Group:
P 31 2 1
4GXY validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:Adenosylcobalamin riboswitch
Chain IDs:A
Chain Length:172
Number of Molecules:1
Biological Source:
Modified Residue
Compound ID Chain ID Parent Comp ID Details 2D Image
CCC A C ?
GTP A G GUANOSINE-5'-TRIPHOSPHATE
Ligand Molecules
B1Z
IRI
MG
Primary Citation
Structural insights into ligand binding and gene expression control by an adenosylcobalamin riboswitch.
Nat.Struct.Mol.Biol. 19 1182 1184 (2012)
PMID: 23064646 DOI: 10.1038/nsmb.2405

Abstact

Coenzyme B(12) has a key role in various enzymatic reactions and controls expression of bacterial genes through riboswitches. Here we report the crystal structure of the Symbiobacterium thermophilum B(12) riboswitch bound to its ligand adenosylcobalamin. The riboswitch forms a unique junctional structure with a large ligand-binding pocket tailored for specific recognition of the adenosyl moiety and flanked by structural elements that stabilize the regulatory region and enable control of gene expression.

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Primary Citation of related structures
4GXY