Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 55708.22 
• Atom Count: 2442 
• Residue Count: 503 
• Unique protein chains: 1

2YHS

Structure of the E. coli SRP receptor FtsY

• DOI: 10.2210/pdb2YHS/pdb

• Classification: CELL CYCLE
• Organism(s): Escherichia coli (strain K12)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2011-05-05 Released: 2011-05-18 
• Deposition Author(s): Stjepanovic, G., Bange, G., Wild, K., Sinning, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.220 
• R-Value Work: 0.178 

Literature

Lipids Trigger a Conformational Switch that Regulates Signal Recognition Particle (Srp)-Mediated Protein Targeting.

Stjepanovic, G., Kapp, K., Bange, G., Graf, C., Parlitz, R., Wild, K., Mayer, M.P., Sinning, I.

(2011) J.Biol.Chem. 286: 23489

• PubMed: 21543314 
• DOI: 10.1074/jbc.M110.212340


• PubMed Abstract: 
  

Co-translational protein targeting to the membrane is mediated by the signal recognition particle and its receptor (FtsY). Their homologous GTPase domains interact at the membrane and form a heterodimer in which both GTPases are activated. The prerequisite for protein targeting is the interaction of FtsY with phospholipids. However, the mechanism of FtsY regulation by phospholipids remained unclear. Here we show that the N terminus of FtsY (A domain) is natively unfolded in solution and define the complete membrane-targeting sequence. We show that the membrane-targeting sequence is highly dynamic in solution, independent of nucleotides and directly responds to the density of anionic phospholipids by a random coil-helix transition. This conformational switch is essential for tethering FtsY to membranes and activates the GTPase for its subsequent interaction with the signal recognition particle. Our results underline the dynamics of lipid-protein interactions and their importance in the regulation of protein targeting and translocation across biological membranes.

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Organizational Affiliation: 

Biochemie Zentrum (BZH), University of Heidelberg, INF 328, 69120 Heidelberg, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
CELL DIVISION PROTEIN FTSY	A	503	Escherichia coli (strain K12)	Mutation(s): 0  Gene Names: ftsY
Find proteins for P10121 (Escherichia coli (strain K12)) Go to UniProtKB:  P10121

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
EDO	A	1,2-ETHANEDIOL ETHYLENE GLYCOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.220 
• R-Value Work: 0.178 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 79.358	α = 90.00
b = 108.412	β = 90.00
c = 31.902	γ = 90.00

Software Package:

Software Name	Purpose
PHENIX	refinement
PHENIX	phasing
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2011-05-05 
• Released Date: 2011-05-18 
• Deposition Author(s): Stjepanovic, G., Bange, G., Wild, K., Sinning, I.

Revision History 

• Version 1.0: 2011-05-18
  Type: Initial release
• Version 1.1: 2011-06-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance