3SYN

Crystal structure of FlhF in complex with its activator


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.06 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural basis for the molecular evolution of SRP-GTPase activation by protein.

Bange, G.Kummerer, N.Grudnik, P.Lindner, R.Petzold, G.Kressler, D.Hurt, E.Wild, K.Sinning, I.

(2011) Nat Struct Mol Biol 18: 1376-1380

  • DOI: 10.1038/nsmb.2141
  • Primary Citation of Related Structures:  
    3SYN

  • PubMed Abstract: 
  • Small G proteins have key roles in signal transduction pathways. They are switched from the signaling 'on' to the non-signaling 'off' state when GTPase-activating proteins (GAPs) provide a catalytic residue. The ancient signal recognition particle (SRP)-type GTPases form GTP-dependent homo- and heterodimers and deviate from the canonical switch paradigm in that no GAPs have been identified ...

    Small G proteins have key roles in signal transduction pathways. They are switched from the signaling 'on' to the non-signaling 'off' state when GTPase-activating proteins (GAPs) provide a catalytic residue. The ancient signal recognition particle (SRP)-type GTPases form GTP-dependent homo- and heterodimers and deviate from the canonical switch paradigm in that no GAPs have been identified. Here we show that the YlxH protein activates the SRP-GTPase FlhF. The crystal structure of the Bacillus subtilis FlhF-effector complex revealed that the effector does not contribute a catalytic residue but positions the catalytic machinery already present in SRP-GTPases. We provide a general concept that might also apply to the RNA-driven activation of the universally conserved, co-translational protein-targeting machinery comprising the SRP-GTPases Ffh and FtsY. Our study exemplifies the evolutionary transition from RNA- to protein-driven activation in SRP-GTPases and suggests that the current view on SRP-mediated protein targeting is incomplete.


    Organizational Affiliation

    Heidelberg University Biochemistry Center, Heidelberg, Germany. gert.bange@bzh.uni-heidelberg.de



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar biosynthesis protein flhFA, B, C, D296Bacillus subtilisMutation(s): 0 
Gene Names: flhFBSU16400
Find proteins for Q01960 (Bacillus subtilis (strain 168))
Explore Q01960 
Go to UniProtKB:  Q01960
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-binding protein YlxHE, F, G, H23Bacillus subtilisMutation(s): 0 
Find proteins for P40742 (Bacillus subtilis (strain 168))
Explore P40742 
Go to UniProtKB:  P40742
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download Ideal Coordinates CCD File 
DA [auth D], I [auth A], Q [auth B], W [auth C]GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
AA [auth C] , BA [auth C] , CA [auth C] , GA [auth D] , HA [auth D] , IA [auth D] , L [auth A] , M [auth A] , 
AA [auth C],  BA [auth C],  CA [auth C],  GA [auth D],  HA [auth D],  IA [auth D],  L [auth A],  M [auth A],  N [auth A],  O [auth A],  P [auth A],  T [auth B],  U [auth B],  V [auth B],  Z [auth C]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
AF3
Query on AF3

Download Ideal Coordinates CCD File 
FA [auth D], K [auth A], S [auth B], Y [auth C]ALUMINUM FLUORIDE
Al F3
KLZUFWVZNOTSEM-UHFFFAOYSA-K
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
EA [auth D], J [auth A], R [auth B], X [auth C]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.06 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.184 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.79α = 92.26
b = 63.36β = 100.96
c = 114.5γ = 94.25
Software Package:
Software NamePurpose
ADSCdata collection
PHENIXmodel building
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-11-09
    Type: Initial release
  • Version 1.1: 2012-05-23
    Changes: Database references