2N9B | pdb_00002n9b

Solution NMR Structure of Antiparallel Myosin-10:GCN4 Tandem Coiled-Coil

• PDB DOI: https://doi.org/10.2210/pdb2N9B/pdb
• BMRB: 25899

• Classification: MOTOR PROTEIN/TRANSCRIPTION
• Organism(s): Bos taurus, Saccharomyces cerevisiae S288C
• Expression System: Escherichia coli BL21, Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-11-12 Released: 2016-06-15 
• Deposition Author(s): Vavra, K.C., Xia, Y., Rock, R.S.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Literature

Competition between Coiled-Coil Structures and the Impact on Myosin-10 Bundle Selection

Vavra, K.C., Xia, Y., Rock, R.S.

(2016) Biophys J 110: 2517-2527

• PubMed: 27276269 
• DOI: https://doi.org/10.1016/j.bpj.2016.04.048
• Primary Citation of Related Structures:  
  2N9B


• PubMed Abstract: 
  

  Coiled-coil fusions are a useful approach to enforce dimerization in protein engineering. However, the final structures of coiled-coil fusion proteins have received relatively little attention. Here, we determine the structural outcome of adjacent parallel and antiparallel coiled coils. The targets are coiled coils that stabilize myosin-10 in single-molecule biophysical studies. We reveal the solution structure of a short, antiparallel, myosin-10 coiled-coil fused to the parallel GCN4-p1 coiled coil. Surprisingly, this structure is a continuous, antiparallel coiled coil where GCN4-p1 pairs with myosin-10 rather than itself. We also show that longer myosin-10 segments in these parallel/antiparallel fusions are dynamic and do not fold cooperatively. Our data resolve conflicting results on myosin-10 selection of actin filament bundles, demonstrating the importance of understanding coiled-coil orientation and stability.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, Illinois.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 16.4 kDa 
• Atom Count: 1,148 
• Modelled Residue Count: 138 
• Deposited Residue Count: 138 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Unconventional myosin-X, General control protein GCN4 fusion	A, B	69	Bos taurus, Saccharomyces cerevisiae S288C This entity is chimeric	Mutation(s): 0  Gene Names: MYO10, GCN4, AAS3, ARG9, YEL009C
UniProt
Find proteins for P03069 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P03069  Go to UniProtKB:  P03069
Find proteins for P79114 (Bos taurus) Explore P79114  Go to UniProtKB:  P79114
UniProt Groups	P03069P79114

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 10 
• Selection Criteria: structures with the lowest energy 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-06-15 
Deposition Author(s): Vavra, K.C., Xia, Y., Rock, R.S.

Revision History  

• Version 1.0: 2016-06-15
  Type: Initial release
  
• Version 1.1: 2018-10-10
  Changes: Data collection, Database references, Experimental preparation, Source and taxonomy, Structure summary
• Version 1.2: 2023-06-14
  Changes: Data collection, Database references, Other, Structure summary
• Version 1.3: 2024-05-15
  Changes: Data collection, Database references