Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 13.07 kDa 
• Atom Count: 979 
• Modelled Residue Count: 101 
• Deposited Residue Count: 113 
• Unique protein chains: 1

1MG4

STRUCTURE OF N-TERMINAL DOUBLECORTIN DOMAIN FROM DCLK: WILD TYPE PROTEIN

• PDB DOI: 10.2210/pdb1MG4/pdb

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


• Deposited: 2002-08-14 Released: 2003-04-29 
• Deposition Author(s): Kim, M.H., Cierpickil, T., Derewenda, U., Krowarsch, D., Feng, Y., Devedjiev, Y., Dauter, Z., Walsh, C.A., Otlewski, J., Bushweller, J.H., Derewenda, Z.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.187 
• R-Value Work: 0.153 
• R-Value Observed: 0.155 

Literature

The DCX-domain Tandems of Doublecortin and Doublecortin-like Kinase

Kim, M.H., Cierpickil, T., Derewenda, U., Krowarsch, D., Feng, Y., Devedjiev, Y., Dauter, Z., Walsh, C.A., Otlewski, J., Bushweller, J.H., Derewenda, Z.

(2003) Nat Struct Biol 10: 324-333

• PubMed: 12692530 
• DOI: 10.1038/nsb918
• Primary Citation of Related Structures:  
  1MFW, 1MG4, 1MJD


• PubMed Abstract: 
  

The doublecortin-like domains (DCX), which typically occur in tandem, are novel microtubule-binding modules. DCX tandems are found in doublecortin, a 360-residue protein expressed in migrating neurons; the doublecortin-like kinase (DCLK); the product of the RP1 gene that is responsible for a form of inherited blindness; and several other proteins. Mutations in the gene encoding doublecortin cause lissencephaly in males and the 'double-cortex syndrome' in females. We here report a solution structure of the N-terminal DCX domain of human doublecortin and a 1.5 A resolution crystal structure of the equivalent domain from human DCLK. Both show a stable, ubiquitin-like tertiary fold with distinct structural similarities to GTPase-binding domains. We also show that the C-terminal DCX domains of both proteins are only partially folded. In functional assays, the N-terminal DCX domain of doublecortin binds only to assembled microtubules, whereas the C-terminal domain binds to both microtubules and unpolymerized tubulin.

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Organizational Affiliation: 

Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia 22908-0736, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DOUBLECORTIN-LIKE KINASE (N-TERMINAL DOMAIN)	A	113	Homo sapiens	Mutation(s): 0  Gene Names: DCLK1, DCAMKL1, DCDC3A, KIAA0369 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for O15075 (Homo sapiens) Explore O15075  Go to UniProtKB:  O15075
PHAROS:  O15075

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A], C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.187 
• R-Value Work: 0.153 
• R-Value Observed: 0.155 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 85.981	α = 90
b = 29.621	β = 101.33
c = 40.332	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-08-14 
• Released Date: 2003-04-29 
Deposition Author(s): Kim, M.H., Cierpickil, T., Derewenda, U., Krowarsch, D., Feng, Y., Devedjiev, Y., Dauter, Z., Walsh, C.A., Otlewski, J., Bushweller, J.H., Derewenda, Z.

Revision History  

• Version 1.0: 2003-04-29
  Type: Initial release
  
• Version 1.1: 2008-04-28
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance