1QGV

HUMAN SPLICEOSOMAL PROTEIN U5-15KD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Identification, characterization and crystal structure analysis of the human spliceosomal U5 snRNP-specific 15 kD protein.

Reuter, K.Nottrott, S.Fabrizio, P.Luhrmann, R.Ficner, R.

(1999) J Mol Biol 294: 515-525

  • DOI: 10.1006/jmbi.1999.3258
  • Primary Citation of Related Structures:  
    1QGV

  • PubMed Abstract: 
  • The U5 small ribonucleoprotein particle (snRNP) contains various proteins involved in catalytic activities mediating conformational rearrangements of the spliceosome. We have isolated and characterized the evolutionarily highly conserved human U5 snR ...

    The U5 small ribonucleoprotein particle (snRNP) contains various proteins involved in catalytic activities mediating conformational rearrangements of the spliceosome. We have isolated and characterized the evolutionarily highly conserved human U5 snRNP-specific protein U5-15kD. The crystal structure of U5-15kD determined at 1.4 A resolution revealed a thioredoxin-like fold and represents the first structure of a U5 snRNP-specific protein known so far. With respect to human thioredoxin the U5-15kD protein contains 37 additional residues causing structural changes which most likely form putative binding sites for other spliceosomal proteins or RNA. Moreover, a novel intramolecular disulfide bond replaces the canonical one found in the thioredoxin family. Even though U5-15kD appears to lack protein disulfide isomerase activity, it is strictly required for pre-mRNA splicing in vivo as we demonstrate by genetic depletion of its ortholog in Saccharomyces cerevisiae. Our data suggest that the previously reported involvement of its Schizosaccharomyces pombe ortholog Dim1p in cell cycle regulation is a consequence of its essential role in pre-mRNA splicing.


    Related Citations: 
    • Overproduction, purification, crystallization and preliminary x-ray diffraction studies of the human spliceosomal protein U5-15kD.
      Reuter, K., Ficner, R.
      (1999) Acta Crystallogr D Biol Crystallogr 55: 888

    Organizational Affiliation

    Institut für Molekularbiologie und Tumorforschung, Universität Marburg, 35037, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SPLICEOSOMAL PROTEIN U5-15KDA142Homo sapiensMutation(s): 0 
Gene Names: U5-15KDTXNL4ADIM1TXNL4
Find proteins for P83876 (Homo sapiens)
Explore P83876 
Go to UniProtKB:  P83876
NIH Common Fund Data Resources
PHAROS  P83876
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.40 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.216 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.225α = 90
b = 65.092β = 90
c = 36.275γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing
SHARPphasing
X-PLORrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-12-12
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-11-27
    Changes: Database references