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 1.2 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: 10.1016/j.str.2004.07.008
  • Primary Citation of Related Structures:  

  • 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- ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Polypyrimidine tract-binding protein 1
A
164Homo sapiensMutation(s): 0 
Gene Names: PTBP1 (PTB)
Find proteins for P26599 (Homo sapiens)
Go to Gene View: PTBP1
Go to UniProtKB:  P26599
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 16 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 1SJR Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-09-14
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance