Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Cyclic - C3  (3D View)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 27450.15 
• Atom Count: 1617 
• Residue Count: 243 
• Unique protein chains: 1

1WT6

Coiled-Coil domain of DMPK

• DOI: 10.2210/pdb1WT6/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2004-11-16 Released: 2005-11-16 
• Deposition Author(s): Garcia, P., Marino, M., Mayans, O.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.271 
• R-Value Work: 0.228 

Literature

Molecular insights into the self-assembly mechanism of dystrophia myotonica kinase

Garcia, P., Ucurum, Z., Bucher, R., Svergun, D.I., Huber, T., Lustig, A., Konarev, P.V., Marino, M., Mayans, O.

(2006) Faseb J. 20: 1142-1151

• PubMed: 16770013 
• DOI: 10.1096/fj.05-5262com


• PubMed Abstract: 
  

Self-assembly via coiled-coil domains (CC) is crucial for the regulation of the dystrophia myotonica kinase (DMPK) -related family of kinases. These CC domains are thought to form dimeric arrangements and thus to mediate dimerization in these enzymes. Using size exclusion chromatography combined with multiangle static light scattering, we analyzed the oligomeric state of DMPK as well as that of a truncated variant lacking the CC fraction. Remarkably, both forms were found to assemble into robust dimers. In contrast, the CC domain in isolation yielded trimeric assemblies, indicating that the oligomerization properties of CC domains from this kinase family are more diversified than anticipated. The crystal structure of this CC has been elucidated to 1.6 angstroms resolution and its properties in solution established using sedimentation equilibrium and thermal denaturation. These data show that, contrary to expectations, the self-assembly of DMPK is not dictated by the association properties of its CC domain. Instead, it appears to be driven by sequence segments flanking both N and C termini of the catalytic kinase fraction, as suggested by models of head-to-head dimers based on small angle X-ray scattering data. Our findings support a shared pattern of assembly across DMPK, ROCKs, and MRCK members of this family.

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Related Citations: 

• Crystallization and preliminary X-ray analysis of the coiled-coil domain of dystrophia myotonica kinase
  Garcia, P.,Marino, M.,Mayans, O.
  (2004) ACTA CRYSTALLOGR.,SECT.D 60: 2336




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Organizational Affiliation: 

Division of Structural Biology, Biozentrum, University of Basel, Klingelbergstr. 70, Basel CH-4056, Switzerland.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Myotonin-protein kinase	A, B, D	81	Homo sapiens	Mutation(s): 0  Gene Names: DMPK (DM1PK, MDPK) EC: 2.7.11.1
Find proteins for Q09013 (Homo sapiens) Go to Gene View: DMPK Go to UniProtKB:  Q09013

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.6 Å
• R-Value Free: 0.271 
• R-Value Work: 0.228 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 39.083	α = 90.00
b = 46.164	β = 90.00
c = 143.377	γ = 90.00

Software Package:

Software Name	Purpose
REFMAC	refinement
SHARP	phasing
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-11-16 
• Released Date: 2005-11-16 
• Deposition Author(s): Garcia, P., Marino, M., Mayans, O.

Revision History 

• Version 1.0: 2005-11-16
  Type: Initial release
• Version 1.1: 2008-04-30
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Version format compliance
• Version 1.3: 2017-10-11
  Type: Refinement description