2XRP

Human Doublecortin N-DC Repeat (1MJD) and Mammalian Tubulin (1JFF and 3HKE) Docked into the 8-Angstrom Cryo-EM Map of Doublecortin- Stabilised Microtubules


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.20 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report



Literature

Template-Free 13-Protofilament Microtubule-Map Assembly Visualized at 8 A Resolution.

Fourniol, F.J.Sindelar, C.V.Amigues, B.Clare, D.K.Thomas, G.Perderiset, M.Francis, F.Houdusse, A.Moores, C.A.

(2010) J Cell Biol 191: 463

  • DOI: 10.1083/jcb.201007081
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Microtubule-associated proteins (MAPs) are essential for regulating and organizing cellular microtubules (MTs). However, our mechanistic understanding of MAP function is limited by a lack of detailed structural information. Using cryo-electron micros ...

    Microtubule-associated proteins (MAPs) are essential for regulating and organizing cellular microtubules (MTs). However, our mechanistic understanding of MAP function is limited by a lack of detailed structural information. Using cryo-electron microscopy and single particle algorithms, we solved the 8 Å structure of doublecortin (DCX)-stabilized MTs. Because of DCX's unusual ability to specifically nucleate and stabilize 13-protofilament MTs, our reconstruction provides unprecedented insight into the structure of MTs with an in vivo architecture, and in the absence of a stabilizing drug. DCX specifically recognizes the corner of four tubulin dimers, a binding mode ideally suited to stabilizing both lateral and longitudinal lattice contacts. A striking consequence of this is that DCX does not bind the MT seam. DCX binding on the MT surface indirectly stabilizes conserved tubulin-tubulin lateral contacts in the MT lumen, operating independently of the nucleotide bound to tubulin. DCX's exquisite binding selectivity uncovers important insights into regulation of cellular MTs.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, Birkbeck College, London, England, UK.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TUBULIN BETA-2B CHAINA, C, E, G445Bos taurusMutation(s): 0 
Gene Names: TUBB2B
EC: 3.6.5.6
Find proteins for Q6B856 (Bos taurus)
Explore Q6B856 
Go to UniProtKB:  Q6B856
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TUBULIN ALPHA-1D CHAINB, D, F, H452Bos taurusMutation(s): 0 
Gene Names: TUBA1D
EC: 3.6.5.6
Find proteins for Q2HJ86 (Bos taurus)
Explore Q2HJ86 
Go to UniProtKB:  Q2HJ86
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
NEURONAL MIGRATION PROTEIN DOUBLECORTINI95Homo sapiensMutation(s): 0 
Gene Names: DCXDBCNLISX
Find proteins for O43602 (Homo sapiens)
Explore O43602 
Go to UniProtKB:  O43602
NIH Common Fund Data Resources
PHAROS  O43602
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GTP
Query on GTP

Download CCD File 
B, D, F, H
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
GDP
Query on GDP

Download CCD File 
A, C, E, G
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.20 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-11-24
    Type: Initial release
  • Version 1.1: 2012-03-21
    Changes: Other, Version format compliance
  • Version 2.0: 2017-08-23
    Changes: Atomic model, Data collection, Refinement description