2RLU

The Three Dimensional Structure of the Moorella thermoacetica Selenocysteine Insertion Sequence RNA Hairpin and its Interaction with the Elongation factor SelB


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the noe lowest energy 

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This is version 1.2 of the entry. See complete history


Literature

The three-dimensional structure of the Moorella thermoacetica selenocysteine insertion sequence RNA hairpin and its interaction with the elongation factor SelB

Beribisky, A.V.Tavares, T.J.Amborski, A.N.Motamed, M.Johnson, A.E.Mark, T.L.Johnson, P.E.

(2007) RNA 13: 1948-1956

  • DOI: 10.1261/rna.686607
  • Primary Citation of Related Structures:  
    2RLU

  • PubMed Abstract: 
  • Incorporation of the amino acid selenocysteine into a growing protein chain involves the interaction between a hairpin in the mRNA termed the selenocysteine insertion sequence (SECIS) and the special elongation factor SelB. Here we present the structure of the SECIS from the thermophilic organism Moorella thermoacetica (SECIS-MT) determined using nuclear magnetic resonance (NMR) spectroscopy ...

    Incorporation of the amino acid selenocysteine into a growing protein chain involves the interaction between a hairpin in the mRNA termed the selenocysteine insertion sequence (SECIS) and the special elongation factor SelB. Here we present the structure of the SECIS from the thermophilic organism Moorella thermoacetica (SECIS-MT) determined using nuclear magnetic resonance (NMR) spectroscopy. The SECIS-MT hairpin structure contains a pentaloop with the first and fourth nucleotides of the loop forming a noncanonical GC base pair; the fifth loop nucleotide is bulged out and unstructured. The G and U in positions two and three are on opposite sides of the loop and solvent exposed. The backbone resonances of the SECIS-binding domain from the M. thermoacetica SelB protein were assigned, and the degree of chemical shift perturbations that occur upon SECIS binding were mapped onto the structure of the complex. We demonstrate that a region in the third winged-helix domain of SelB, not previously implicated in binding, is affected by SECIS binding.


    Organizational Affiliation

    Department of Chemistry, York University, Toronto, Ontario, Canada.



Macromolecules

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Entity ID: 1
MoleculeChainsLengthOrganismImage
RNA (5'-R(*GP*GP*UP*UP*GP*CP*GP*GP*GP*UP*CP*UP*CP*GP*CP*AP*AP*CP*C)-3')A 19N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 30 
  • Conformers Submitted: 10 
  • Selection Criteria: structures with the noe lowest energy 
  • OLDERADO: 2RLU Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-02-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2020-09-09
    Changes: Data collection, Derived calculations, Structure summary