4K17

Crystal Structure of mouse CARMIL residues 1-668


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.215 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

CARMIL leading edge localization depends on a non-canonical PH domain and dimerization.

Zwolak, A.Yang, C.Feeser, E.A.Michael Ostap, E.Svitkina, T.Dominguez, R.

(2013) Nat Commun 4: 2523-2523

  • DOI: https://doi.org/10.1038/ncomms3523
  • Primary Citation of Related Structures:  
    4K17

  • PubMed Abstract: 

    CARMIL is an approximately 1,370-amino-acid cytoskeletal scaffold that has crucial roles in cell motility and tissue development through interactions with cytoskeletal effectors and regulation of capping protein at the leading edge. However, the mechanism of CARMIL leading edge localization is unknown. Here we show that CARMIL interacts directly with the plasma membrane through its amino-terminal region. The crystal structure of CARMIL1-668 reveals that this region harbours a non-canonical pleckstrin homology (PH) domain connected to a 16-leucine-rich repeat domain. Lipid binding is mediated by the PH domain, but is further enhanced by a central helical domain. Small-angle X-ray scattering reveals that the helical domain mediates antiparallel dimerization, properly positioning the PH domains for simultaneous membrane interaction. In cells, deletion of the PH domain impairs leading edge localization. The results support a direct membrane-binding mechanism for CARMIL localization at the leading edge, where it regulates cytoskeletal effectors and motility.


  • Organizational Affiliation

    Department of Physiology, Perelman School of Medicine, University of Pennsylvania, 728 Clinical Research Building, 415 Curie Boulevard, Philadelphia, Pennsylvania 19104, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Leucine-rich repeat-containing protein 16A
A, B, C, D
669Mus musculusMutation(s): 0 
Gene Names: CarmilLrrc16Lrrc16a
UniProt
Find proteins for Q6EDY6 (Mus musculus)
Explore Q6EDY6 
Go to UniProtKB:  Q6EDY6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6EDY6
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.259 
  • R-Value Work: 0.215 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.168α = 92.73
b = 67.986β = 96.95
c = 212.151γ = 110.15
Software Package:
Software NamePurpose
ADSCdata collection
SnBphasing
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-10-09
    Type: Initial release
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Database references, Derived calculations