6JMU

Crystal structure of GIT1/Paxillin complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

GIT/PIX Condensates Are Modular and Ideal for Distinct Compartmentalized Cell Signaling.

Zhu, J.Zhou, Q.Xia, Y.Lin, L.Li, J.Peng, M.Zhang, R.Zhang, M.

(2020) Mol Cell 79: 782-796.e6

  • DOI: 10.1016/j.molcel.2020.07.004
  • Primary Citation of Related Structures:  
    6JMT, 6JMU

  • PubMed Abstract: 
  • Enzymes or enzyme complexes can be concentrated in different cellular loci to modulate distinct functional processes in response to specific signals. How cells condense and compartmentalize enzyme complexes for spatiotemporally distinct cellular events is not well understood ...

    Enzymes or enzyme complexes can be concentrated in different cellular loci to modulate distinct functional processes in response to specific signals. How cells condense and compartmentalize enzyme complexes for spatiotemporally distinct cellular events is not well understood. Here we discover that specific and tight association of GIT1 and β-Pix, a pair of GTPase regulatory enzymes, leads to phase separation of the complex without additional scaffolding molecules. GIT1/β-Pix condensates are modular in nature and can be positioned at distinct cellular compartments, such as neuronal synapses, focal adhesions, and cell-cell junctions, by upstream adaptors. Guided by the structure of the GIT/PIX complex, we specifically probed the role of phase separation of the enzyme complex in cell migration and synapse formation. Our study suggests that formation of modular enzyme complex condensates via phase separation can dynamically concentrate limited quantities of enzymes to distinct cellular compartments for specific and optimal signaling.


    Organizational Affiliation

    Division of Life Science, State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China; Center of Systems Biology and Human Health, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China. Electronic address: mzhang@ust.hk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ARF GTPase-activating protein GIT1A, B137Mus musculusMutation(s): 0 
Gene Names: Git1
UniProt
Find proteins for Q68FF6 (Mus musculus)
Explore Q68FF6 
Go to UniProtKB:  Q68FF6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ68FF6
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PaxillinC, D32Mus musculusMutation(s): 0 
Gene Names: Pxn
UniProt
Find proteins for Q8VI36 (Mus musculus)
Explore Q8VI36 
Go to UniProtKB:  Q8VI36
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8VI36
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.209 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 31.2α = 90
b = 90.954β = 107.42
c = 52.309γ = 90
Software Package:
Software NamePurpose
HKL-3000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-3000data reduction
PHASERphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-05-20
    Type: Initial release
  • Version 1.1: 2020-10-21
    Changes: Database references