6E5N | pdb_00006e5n

Solution structure of human Myosin VI isoform 3 (1050-1131) in complex with Clathrin light chain a (46-61)

• PDB DOI: https://doi.org/10.2210/pdb6E5N/pdb
• BMRB: 30500

• Classification: MOTOR PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2018-07-20 Released: 2019-11-20 
• Deposition Author(s): Buel, G.R., Walters, K.J.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 300 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Literature

Clathrin light chain A drives selective myosin VI recruitment to clathrin-coated pits under membrane tension.

Biancospino, M., Buel, G.R., Nino, C.A., Maspero, E., Scotto di Perrotolo, R., Raimondi, A., Redlingshofer, L., Weber, J., Brodsky, F.M., Walters, K.J., Polo, S.

(2019) Nat Commun 10: 4974-4974

• PubMed: 31672988 
• DOI: https://doi.org/10.1038/s41467-019-12855-6
• Primary Citation Related Structures: 
  6E5N


• PubMed Abstract: 
  

  Clathrin light chains (CLCa and CLCb) are major constituents of clathrin-coated vesicles. Unique functions for these evolutionary conserved paralogs remain elusive, and their role in clathrin-mediated endocytosis in mammalian cells is debated. Here, we find and structurally characterize a direct and selective interaction between CLCa and the long isoform of the actin motor protein myosin VI, which is expressed exclusively in highly polarized tissues. Using genetically-reconstituted Caco-2 cysts as proxy for polarized epithelia, we provide evidence for coordinated action of myosin VI and CLCa at the apical surface where these proteins are essential for fission of clathrin-coated pits. We further find that myosin VI and Huntingtin-interacting protein 1-related protein (Hip1R) are mutually exclusive interactors with CLCa, and suggest a model for the sequential function of myosin VI and Hip1R in actin-mediated clathrin-coated vesicle budding.

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Organizational Affiliation: 
• IFOM, Fondazione Istituto FIRC di Oncologia Molecolare, 20139, Milan, Italy.
Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702, USA.
Experimental Imaging Center, San Raffaele Scientific Institute, Milan, Italy.
Division of Biosciences, University College London, London, WC1E 6BT, UK.
Division of Biosciences, University College London, London, WC1E 6BT, UK. [e-mail].
Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702, USA. [e-mail].
IFOM, Fondazione Istituto FIRC di Oncologia Molecolare, 20139, Milan, Italy. [e-mail].
Dipartimento di Oncologia ed Emato-oncologia, Universita' degli Studi di Milano, 20122, Milan, Italy. [e-mail].

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: immunoprecipitation

Macromolecule Content 

• Total Structure Weight: 12.37 kDa 
• Atom Count: 782 
• Modeled Residue Count: 98 
• Deposited Residue Count: 111 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Unconventional myosin-VI	A [auth B]	87	Homo sapiens	Mutation(s): 0  Gene Names: MYO6, KIAA0389
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UM54 (Homo sapiens) Explore Q9UM54  Go to UniProtKB:  Q9UM54
PHAROS:  Q9UM54 GTEx:  ENSG00000196586

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Clathrin light chain A	B [auth A]	24	Homo sapiens	Mutation(s): 0  Gene Names: CLTA
UniProt & NIH Common Fund Data Resources
Find proteins for P09496 (Homo sapiens) Explore P09496  Go to UniProtKB:  P09496
PHAROS:  P09496 GTEx:  ENSG00000122705

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 300 
• Conformers Submitted: 20 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2019-11-20 
Deposition Author(s): Buel, G.R., Walters, K.J.

Revision History  

• Version 1.0: 2019-11-20
  Type: Initial release
  
• Version 1.1: 2020-06-03
  Changes: Database references
• Version 1.2: 2023-06-14
  Changes: Database references, Other
• Version 1.3: 2024-05-15
  Changes: Data collection, Database references