WHAMM's Microtubule binding motif

Experimental Data Snapshot

  • Resolution: 4.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Structural Insights of WHAMM's Interaction with Microtubules by Cryo-EM

Liu, T.Dai, A.Cao, Y.Zhang, R.Dong, M.Q.Wang, H.W.

(2017) J Mol Biol 429: 1352-1363

  • DOI: https://doi.org/10.1016/j.jmb.2017.03.022
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    WASP homolog associated with actin, membranes, and microtubules (WHAMM) is a vertebrate protein functioning in membrane tubulation for intracellular membrane trafficking and specific organelle formation. Composed of multiple domains, WHAMM can bind to membrane and microtubule (MT) and promote actin polymerization nucleation. Previous work revealed that WHAMM's activity to promote actin nucleation is repressed upon binding to MTs. Here, we discovered that WHAMM interacts with αβ-tubulin through a small peptide motif within its MT-binding domain. We reconstructed a high-resolution structure of WHAMM's MT-binding motif (MBM) assembling around MTs using cryo-electron microscopy and verified it with chemical cross-linking and mass spectrometry analysis. We also detected a conformational switch of this motif between the non-MT-bound state and the MT-bound state. These discoveries provide new insights into the mechanism by which WHAMM coordinates actin and MT networks, the two major cytoskeletal systems involved in membrane trafficking and membrane remodeling.

  • Organizational Affiliation

    Ministry of Education Key Laboratory of Protein Sciences, Tsinghua-Peking Joint Center for Life Sciences, Beijing Advanced Innovation Center for Structural Biology, School of Life Sciences, Tsinghua University, Beijing 100084, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
WASP homolog-associated protein with actin, membranes and microtubulesA [auth C]34Homo sapiensMutation(s): 0 
Gene Names: WHAMMKIAA1971WHDC1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8TF30 (Homo sapiens)
Explore Q8TF30 
Go to UniProtKB:  Q8TF30
GTEx:  ENSG00000156232 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8TF30
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 4.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-07-05
    Type: Initial release
  • Version 1.1: 2019-10-09
    Changes: Data collection, Other
  • Version 1.2: 2024-03-27
    Changes: Data collection, Database references