1B34

CRYSTAL STRUCTURE OF THE D1D2 SUB-COMPLEX FROM THE HUMAN SNRNP CORE DOMAIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.249 

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This is version 1.3 of the entry. See complete history


Literature

Crystal structures of two Sm protein complexes and their implications for the assembly of the spliceosomal snRNPs.

Kambach, C.Walke, S.Young, R.Avis, J.M.de la Fortelle, E.Raker, V.A.Luhrmann, R.Li, J.Nagai, K.

(1999) Cell 96: 375-387

  • DOI: 10.1016/s0092-8674(00)80550-4
  • Primary Citation of Related Structures:  
    1B34, 1D3B

  • PubMed Abstract: 
  • The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F, and G) in common, which assemble around the Sm site present in four of the major spliceosoma ...

    The U1, U2, U4/U6, and U5 small nuclear ribonucleoprotein particles (snRNPs) involved in pre-mRNA splicing contain seven Sm proteins (B/B', D1, D2, D3, E, F, and G) in common, which assemble around the Sm site present in four of the major spliceosomal small nuclear RNAs (snRNAs). These proteins share a common sequence motif in two segments, Sm1 and Sm2, separated by a short variable linker. Crystal structures of two Sm protein complexes, D3B and D1D2, show that these proteins have a common fold containing an N-terminal helix followed by a strongly bent five-stranded antiparallel beta sheet, and the D1D2 and D3B dimers superpose closely in their core regions, including the dimer interfaces. The crystal structures suggest that the seven Sm proteins could form a closed ring and the snRNAs may be bound in the positively charged central hole.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge, England, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (SMALL NUCLEAR RIBONUCLEOPROTEIN SM D1)A119Homo sapiensMutation(s): 0 
Gene Names: SNRPD1
Find proteins for P62314 (Homo sapiens)
Explore P62314 
Go to UniProtKB:  P62314
NIH Common Fund Data Resources
PHAROS  P62314
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (SMALL NUCLEAR RIBONUCLEOPROTEIN SM D2)B118Homo sapiensMutation(s): 0 
Gene Names: SNRPD2SNRPD1
Find proteins for P62316 (Homo sapiens)
Explore P62316 
Go to UniProtKB:  P62316
NIH Common Fund Data Resources
PHAROS  P62316
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.286 
  • R-Value Work: 0.249 
  • Space Group: P 62
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.3α = 90
b = 75.3β = 90
c = 91.99γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
MOSFLMdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-01-13
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-12-07
    Changes: Database references