ISDA

Deposition Date 2013-02-27

Release Date 2013-04-17

Last Version Date 2024-02-28

Entry Detail

PDB ID:

4JF2

Keywords:

RNA

Title:

Structure of a class II preQ1 riboswitch reveals ligand recognition by a new fold

Biological Source:

Source Organism:

Lactobacillus rhamnosus (Taxon ID: 47715)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.28 Å

R-Value Free:

0.24

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

C 2 2 21

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Macromolecular Entities

Polymer Type:polyribonucleotide
Molecule:PreQ1-II Riboswitch
Chain IDs:A
Chain Length:77
Number of Molecules:1
Biological Source:Lactobacillus rhamnosus

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
GTP	A	G	GUANOSINE-5'-TRIPHOSPHATE

Ligand Molecules

PRF

Primary Citation

Structure of a class II preQ1 riboswitch reveals ligand recognition by a new fold.

Liberman, J.A, Salim, M, Krucinska, J, Wedekind, J.E.Show

Nat.Chem.Biol. 9 353 355 (2013)

PMID: 23584677 DOI: 10.1038/nchembio.1231

Abstact

PreQ1 riboswitches regulate genes by binding the pyrrolopyrimidine intermediate preQ1 during the biosynthesis of the essential tRNA base queuosine. We report what is to our knowledge the first preQ1-II riboswitch structure at 2.3-Å resolution, which uses a previously uncharacterized fold to achieve effector recognition at the confluence of a three-way helical junction flanking a pseudoknotted ribosome-binding site. The results account for translational control mediated by the preQ1-II riboswitch class and expand the known repertoire of ligand-binding modes used by regulatory RNAs.

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Protein

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Disease

Primary Citation of related structures