1914

SIGNAL RECOGNITION PARTICLE ALU RNA BINDING HETERODIMER, SRP9/14


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.53 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The crystal structure of the signal recognition particle Alu RNA binding heterodimer, SRP9/14.

Birse, D.E.Kapp, U.Strub, K.Cusack, S.Aberg, A.

(1997) EMBO J. 16: 3757-3766

  • DOI: 10.1093/emboj/16.13.3757

  • PubMed Abstract: 
  • The mammalian signal recognition particle (SRP) is an 11S cytoplasmic ribonucleoprotein that plays an essential role in protein sorting. SRP recognizes the signal sequence of the nascent polypeptide chain emerging from the ribosome, and targets the r ...

    The mammalian signal recognition particle (SRP) is an 11S cytoplasmic ribonucleoprotein that plays an essential role in protein sorting. SRP recognizes the signal sequence of the nascent polypeptide chain emerging from the ribosome, and targets the ribosome-nascent chain-SRP complex to the rough endoplasmic reticulum. The SRP consists of six polypeptides (SRP9, SRP14, SRP19, SRP54, SRP68 and SRP72) and a single 300 nucleotide RNA molecule. SRP9 and SRP14 proteins form a heterodimer that binds to the Alu domain of SRP RNA which is responsible for translation arrest. We report the first crystal structure of a mammalian SRP protein, that of the mouse SRP9/14 heterodimer, determined at 2.5 A resolution. SRP9 and SRP14 are found to be structurally homologous, containing the same alpha-beta-beta-beta-alpha fold. This we designate the Alu binding module (Alu bm), an additional member of the family of small alpha/beta RNA binding domains. The heterodimer has pseudo 2-fold symmetry and is saddle like, comprising a strongly curved six-stranded amphipathic beta-sheet with the four helices packed on the convex side and the exposed concave surface being lined with positively charged residues.


    Related Citations: 
    • Crystallization and Preliminary Crystallographic Analysis of the Signal Recognition Particle Srpphi14-9 Fusion Protein
      Birse, D.E.,Doublie, S.,Kapp, U.,Strub, K.,Cusack, S.,Aberg, A.
      (1996) FEBS Lett. 384: 215


    Organizational Affiliation

    European Molecular Biology Laboratory, Grenoble Outstation, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SIGNAL RECOGNITION PARTICLE 9/14 FUSION PROTEIN
A
232Mus musculusGene Names: Srp14
Find proteins for P16254 (Mus musculus)
Go to UniProtKB:  P16254
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
BME
Query on BME

Download SDF File 
Download CCD File 
A
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.53 Å
  • R-Value Free: 0.299 
  • R-Value Work: 0.248 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 69.020α = 90.00
b = 69.020β = 90.00
c = 90.440γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
DENZOdata reduction
X-PLORmodel building
X-PLORrefinement
CCP4data scaling
MOSFLMdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-12-30
    Type: Initial release
  • Version 1.1: 2008-03-05
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model