2JWN

Solution NMR structure of the protease-resistent domain of Xenopus laevis ePABP2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis for RNA recognition by a type II poly(A)-binding protein.

Song, J.McGivern, J.V.Nichols, K.W.Markley, J.L.Sheets, M.D.

(2008) Proc.Natl.Acad.Sci.USA 105: 15317-15322

  • DOI: 10.1073/pnas.0801274105

  • PubMed Abstract: 
  • We identified a functional domain (XlePABP2-TRP) of Xenopus laevis embryonic type II poly(A)-binding protein (XlePABP2). The NMR structure of XlePABP2-TRP revealed that the protein is a homodimer formed by the antiparallel association of beta-strands ...

    We identified a functional domain (XlePABP2-TRP) of Xenopus laevis embryonic type II poly(A)-binding protein (XlePABP2). The NMR structure of XlePABP2-TRP revealed that the protein is a homodimer formed by the antiparallel association of beta-strands from the single RNA recognition motif (RRM) domain of each subunit. In each subunit of the homodimer, the canonical RNA recognition site is occluded by a polyproline motif. Upon poly(A) binding, XlePABP2-TRP undergoes a dimer-monomer transition that removes the polyproline motif from the RNA recognition site and allows it to be replaced by the adenosine nucleotides of poly(A). Our results provide high-resolution structural information concerning type II PABPs and an example of a single RRM domain protein that transitions from a homodimer to a monomer upon RNA binding. These findings advance our understanding of RRM domain regulation, poly(A) recognition, and are relevant to understanding how type II PABPs function in mRNA processing and human disease.


    Organizational Affiliation

    Department of Biochemistry, Center for Eukaryotic Structural Genomics, University of Wisconsin, Madison, WI 53706, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Embryonic polyadenylate-binding protein 2-B
A, B
124Xenopus laevisMutation(s): 0 
Gene Names: Pabpn1l-b (epabp2-b, pabpnl1-b)
Find proteins for Q6TY21 (Xenopus laevis)
Go to UniProtKB:  Q6TY21
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 
  • Olderado: 2JWN Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-10-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance