Biological Assembly 1  

 3D View: Structure

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 32839.92 
• Atom Count: 2299 
• Residue Count: 297 
• Unique protein chains: 1

1J8M

Signal Recognition Particle conserved GTPase domain from A. ambivalens

• DOI: 10.2210/pdb1J8M/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Acidianus ambivalens
• Expression System: Escherichia coli BL21


• Deposited: 2001-05-22 Released: 2001-06-13 
• Deposition Author(s): Montoya, G., te Kaat, K., Moll, R., Schafer, G., Sinning, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.270 
• R-Value Work: 0.216 

Literature

The crystal structure of the conserved GTPase of SRP54 from the archaeon Acidianus ambivalens and its comparison with related structures suggests a model for the SRP-SRP receptor complex.

Montoya, G., Kaat, K., Moll, R., Schafer, G., Sinning, I.

(2000) Structure Fold.Des. 8: 515-525

• PubMed: 10801496 
• Primary Citation of Related Structures:  
  1J8Y
• Also Cited By: 3KL4


• PubMed Abstract: 
  

Protein targeting to the endoplasmic reticulum in eukaryotes and to the cell membrane in prokaryotes is mediated by the signal recognition particle (SRP) and its receptor (SR). Both contain conserved GTPase domains in the signal-peptide-binding proteins (SRP54 and Ffh) and the SR proteins (SRalpha and FtsY). These GTPases are involved in the regulation of protein targeting. Most studies so far have focussed on the SRP machinery of mammals and bacteria, leaving the SRP system of archaea less well understood.

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Related Citations: 

• Crystallization and Preliminary X-ray Diffraction Studies on the Conserved GTPase Domain of the Signal Recognition Particle from Acidianus ambivalens
  Montoya, G.,te Kaat, K.,Moll, R.,Schafer, G.,Sinning, I.
  (1999) Acta Crystallogr.,Sect.D 55: 1949




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Organizational Affiliation: 

European Molecular Biology Laboratory, Structural Biology Programme, Heidelberg, D-69017, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
SIGNAL RECOGNITION 54 KDA PROTEIN	F	297	Acidianus ambivalens	Mutation(s): 0  Gene Names: srp54 (ffh)
Find proteins for P70722 (Acidianus ambivalens) Go to UniProtKB:  P70722

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.270 
• R-Value Work: 0.216 
• Space Group: C 2 2 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 64.866	α = 90.00
b = 128.020	β = 90.00
c = 72.004	γ = 90.00

Software Package:

Software Name	Purpose
CCP4	data scaling
REFMAC	refinement
MOSFLM	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-05-22 
• Released Date: 2001-06-13 
• Deposition Author(s): Montoya, G., te Kaat, K., Moll, R., Schafer, G., Sinning, I.

Revision History 

• Version 1.0: 2001-06-13
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance