2N0Z

Solution structure of MyUb (1080-1122) of human Myosin VI


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Myosin VI Contains a Compact Structural Motif that Binds to Ubiquitin Chains.

He, F.Wollscheid, H.P.Nowicka, U.Biancospino, M.Valentini, E.Ehlinger, A.Acconcia, F.Magistrati, E.Polo, S.Walters, K.J.

(2016) Cell Rep 14: 2683-2694

  • DOI: 10.1016/j.celrep.2016.01.079
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Myosin VI is critical for cargo trafficking and sorting during early endocytosis and autophagosome maturation, and abnormalities in these processes are linked to cancers, neurodegeneration, deafness, and hypertropic cardiomyopathy. We identify a stru ...

    Myosin VI is critical for cargo trafficking and sorting during early endocytosis and autophagosome maturation, and abnormalities in these processes are linked to cancers, neurodegeneration, deafness, and hypertropic cardiomyopathy. We identify a structured domain in myosin VI, myosin VI ubiquitin-binding domain (MyUb), that binds to ubiquitin chains, especially those linked via K63, K11, and K29. Herein, we solve the solution structure of MyUb and MyUb:K63-linked diubiquitin. MyUb folds as a compact helix-turn-helix-like motif and nestles between the ubiquitins of K63-linked diubiquitin, interacting with distinct surfaces of each. A nine-amino-acid extension at the C-terminal helix (Helix2) of MyUb is required for myosin VI interaction with endocytic and autophagic adaptors. Structure-guided mutations revealed that a functional MyUb is necessary for optineurin interaction. In addition, we found that an isoform-specific helix restricts MyUb binding to ubiquitin chains. This work provides fundamental insights into myosin VI interaction with ubiquitinated cargo and functional adaptors.


    Organizational Affiliation

    Protein Processing Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Unconventional myosin-VI
A
51Homo sapiensMutation(s): 0 
Gene Names: MYO6 (KIAA0389)
Find proteins for Q9UM54 (Homo sapiens)
Go to Gene View: MYO6
Go to UniProtKB:  Q9UM54
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: target function 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-03-20 
  • Released Date: 2016-03-09 
  • Deposition Author(s): He, F., Walters, K.

Revision History 

  • Version 1.0: 2016-03-09
    Type: Initial release
  • Version 1.1: 2016-03-30
    Type: Database references
  • Version 1.2: 2016-04-06
    Type: Database references
  • Version 1.3: 2016-04-27
    Type: Structure summary