5A9Y

Structure of ppGpp BipA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.321 
  • R-Value Work: 0.254 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Bipa in GTP Form Bound to the Ratcheted Ribosome.

Kumar, V.Chen, Y.Ero, R.Ahmed, T.Tan, J.Li, Z.Wong, A.S.W.Bhushan, S.Gao, Y.

(2015) Proc.Natl.Acad.Sci.USA 112: 10944

  • DOI: 10.1073/pnas.1513216112
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • BPI-inducible protein A (BipA) is a member of the family of ribosome-dependent translational GTPase (trGTPase) factors along with elongation factors G and 4 (EF-G and EF4). Despite being highly conserved in bacteria and playing a critical role in coo ...

    BPI-inducible protein A (BipA) is a member of the family of ribosome-dependent translational GTPase (trGTPase) factors along with elongation factors G and 4 (EF-G and EF4). Despite being highly conserved in bacteria and playing a critical role in coordinating cellular responses to environmental changes, its structures (isolated and ribosome bound) remain elusive. Here, we present the crystal structures of apo form and GTP analog, GDP, and guanosine-3',5'-bisdiphosphate (ppGpp)-bound BipA. In addition to having a distinctive domain arrangement, the C-terminal domain of BipA has a unique fold. Furthermore, we report the cryo-electron microscopy structure of BipA bound to the ribosome in its active GTP form and elucidate the unique structural attributes of BipA interactions with the ribosome and A-site tRNA in the light of its possible function in regulating translation.


    Organizational Affiliation

    Institute of Molecular and Cell Biology, A*STAR, 138673, Singapore; School of Biological Sciences, Nanyang Technological University, 637551, Singapore.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GTP-BINDING PROTEIN
A
607Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: typA (bipA, yihK)
Find proteins for P32132 (Escherichia coli (strain K12))
Go to UniProtKB:  P32132
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
G4P
Query on G4P

Download SDF File 
Download CCD File 
A
GUANOSINE-5',3'-TETRAPHOSPHATE
C10 H17 N5 O17 P4
BUFLLCUFNHESEH-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4 Å
  • R-Value Free: 0.321 
  • R-Value Work: 0.254 
  • Space Group: I 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 244.310α = 90.00
b = 244.310β = 90.00
c = 244.310γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
MOLREPphasing
REFMACrefinement
XDSdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-08-26
    Type: Initial release
  • Version 1.1: 2015-09-02
    Type: Database references
  • Version 1.2: 2015-09-16
    Type: Database references