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.

---

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 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.

---

Organizational Affiliation: 
• Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, Illinois.
Minnesota NMR Center, University of Minnesota, Minneapolis, Minnesota.
Department of Biochemistry and Molecular Biology, The University of Chicago, Chicago, Illinois. Electronic address: [e-mail].

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 
• Modeled 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