2G1W image
Deposition Date 2006-02-15
Release Date 2006-04-11
Last Version Date 2024-05-29
Entry Detail
PDB ID:
2G1W
Keywords:
RNA
Title:
NMR structure of the Aquifex aeolicus tmRNA pseudoknot PK1
Biological Source:
Source Organism:
Method Details:
Experimental Method:
SOLUTION NMR
Conformers Calculated:
100
Conformers Submitted:
15
Selection Criteria:
structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy
2G1W validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:5'-R(*GP*GP*GP*GP*UP*GP*GP*CP*UP*CP*CP*CP*CP*UP*AP*AP*CP*AP*GP*CP*CP*G)-3'
Mutagens:C1G, G13C
Chain IDs:A
Chain Length:22
Number of Molecules:1
Biological Source:
Ligand Molecules
NA
Primary Citation
NMR structure of the Aquifex aeolicus tmRNA pseudoknot PK1: new insights into the recoding event of the ribosomal trans-translation.
Nucleic Acids Res. 34 1847 1853 (2006)
PMID: 16595798 DOI: 10.1093/nar/gkl111

Abstact

The transfer-messenger RNA (tmRNA) pseudoknot PK1 is essential for bacterial trans-translation, a ribosomal rescue mechanism. We report the solution structure of PK1 from Aquifex aeolicus, which despite an unprecedented small number of nucleotides and thus an unprecented compact size, displays a very high thermal stability. Several unusual structural features account for these properties and indicate that PK1 belongs to the class of ribosomal frameshift pseudoknots. This suggests a similarity between the mechanism of programmed ribosomal frameshifting and trans-translation.

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Primary Citation of related structures
2G1W