1E8O

Core of the Alu domain of the mammalian SRP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.245 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and Assembly of the Alu Domain of the Mammalian Signal Recognition Particle

Weichenrieder, O.Wild, K.Strub, K.Cusack, S.

(2000) Nature 408: 167

  • DOI: 10.1038/35041507
  • Primary Citation of Related Structures:  
    1E8S, 1E8O

  • PubMed Abstract: 
  • The Alu domain of the mammalian signal recognition particle (SRP) comprises the heterodimer of proteins SRP9 and SRP14 bound to the 5' and 3' terminal sequences of SRP RNA. It retards the ribosomal elongation of signal-peptide-containing proteins before their engagement with the translocation machinery in the endoplasmic reticulum ...

    The Alu domain of the mammalian signal recognition particle (SRP) comprises the heterodimer of proteins SRP9 and SRP14 bound to the 5' and 3' terminal sequences of SRP RNA. It retards the ribosomal elongation of signal-peptide-containing proteins before their engagement with the translocation machinery in the endoplasmic reticulum. Here we report two crystal structures of the heterodimer SRP9/14 bound either to the 5' domain or to a construct containing both 5' and 3' domains. We present a model of the complete Alu domain that is consistent with extensive biochemical data. SRP9/14 binds strongly to the conserved core of the 5' domain, which forms a U-turn connecting two helical stacks. Reversible docking of the more weakly bound 3' domain might be functionally important in the mechanism of translational regulation. The Alu domain structure is probably conserved in other cytoplasmic ribonucleoprotein particles and retroposition intermediates containing SRP9/14-bound RNAs transcribed from Alu repeats or related elements in genomic DNA.


    Organizational Affiliation

    European Molecular Laboratory Biology, Grenoble Outstation, France.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SIGNAL RECOGNITION PARTICLE 9 KDA PROTEINA, C85Homo sapiensMutation(s): 0 
Gene Names: SRP9
UniProt & NIH Common Fund Data Resources
Find proteins for P49458 (Homo sapiens)
Explore P49458 
Go to UniProtKB:  P49458
PHAROS:  P49458
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
SIGNAL RECOGNITION PARTICLE 14 KDA PROTEINB, D106Homo sapiensMutation(s): 0 
Gene Names: SRP14
UniProt & NIH Common Fund Data Resources
Find proteins for P37108 (Homo sapiens)
Explore P37108 
Go to UniProtKB:  P37108
PHAROS:  P37108
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsLengthOrganismImage
7SL RNAE50Homo sapiens
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
F [auth A], G [auth B], H [auth E]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.291 
  • R-Value Work: 0.245 
  • R-Value Observed: 0.245 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.448α = 90
b = 186.621β = 90
c = 189.824γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-11-08
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance