1SJR

NMR Structure of RRM2 from Human Polypyrimidine Tract Binding Protein Isoform 1 (PTB1)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure and RNA Interactions of the N-Terminal RRM Domains of PTB

Simpson, P.J.Monie, T.P.Szendroi, A.Davydova, N.Tyzack, J.K.Conte, M.R.Read, C.M.Cary, P.D.Svergun, D.I.Konarev, P.V.Curry, S.Matthews, S.J.

(2004) Structure 12: 1631-1643

  • DOI: https://doi.org/10.1016/j.str.2004.07.008
  • Primary Citation of Related Structures:  
    1SJQ, 1SJR

  • PubMed Abstract: 
  • The polypyrimidine tract binding protein (PTB) is an important regulator of alternative splicing that also affects mRNA localization, stabilization, polyadenylation, and translation. NMR structural analysis of the N-terminal half of PTB (residues 55-301) shows a canonical structure for RRM1 but reveals novel extensions to the beta strands and C terminus of RRM2 that significantly modify the beta sheet RNA binding surface ...

    The polypyrimidine tract binding protein (PTB) is an important regulator of alternative splicing that also affects mRNA localization, stabilization, polyadenylation, and translation. NMR structural analysis of the N-terminal half of PTB (residues 55-301) shows a canonical structure for RRM1 but reveals novel extensions to the beta strands and C terminus of RRM2 that significantly modify the beta sheet RNA binding surface. Although PTB contains four RNA recognition motifs (RRMs), it is widely held that only RRMs 3 and 4 are involved in RNA binding and that RRM2 mediates homodimerization. However, we show here not only that the RRMs 1 and 2 contribute substantially to RNA binding but also that full-length PTB is monomeric, with an elongated structure determined by X-ray solution scattering that is consistent with a linear arrangement of the constituent RRMs. These new insights into the structure and RNA binding properties of PTB suggest revised models of its mechanism of action.


    Organizational Affiliation

    Department of Biological Sciences, Imperial College, South Kensington Campus, Exhibition Road, London SW7 2AZ, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polypyrimidine tract-binding protein 1164Homo sapiensMutation(s): 0 
Gene Names: PTBP1PTB
UniProt & NIH Common Fund Data Resources
Find proteins for P26599 (Homo sapiens)
Explore P26599 
Go to UniProtKB:  P26599
PHAROS:  P26599
Entity Groups  
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UniProt GroupP26599
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2004-09-14
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2022-03-02
    Changes: Data collection, Database references, Derived calculations