5M50

Mechanism of microtubule minus-end recognition and protection by CAMSAP proteins


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.3 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A structural model for microtubule minus-end recognition and protection by CAMSAP proteins.

Atherton, J.Jiang, K.Stangier, M.M.Luo, Y.Hua, S.Houben, K.van Hooff, J.J.E.Joseph, A.P.Scarabelli, G.Grant, B.J.Roberts, A.J.Topf, M.Steinmetz, M.O.Baldus, M.Moores, C.A.Akhmanova, A.

(2017) Nat. Struct. Mol. Biol. 24: 931-943

  • DOI: 10.1038/nsmb.3483
  • Primary Citation of Related Structures:  5LZN, 5M54, 5M5C

  • PubMed Abstract: 
  • CAMSAP and Patronin family members regulate microtubule minus-end stability and localization and thus organize noncentrosomal microtubule networks, which are essential for cell division, polarization and differentiation. Here, we found that the CAMSA ...

    CAMSAP and Patronin family members regulate microtubule minus-end stability and localization and thus organize noncentrosomal microtubule networks, which are essential for cell division, polarization and differentiation. Here, we found that the CAMSAP C-terminal CKK domain is widely present among eukaryotes and autonomously recognizes microtubule minus ends. Through a combination of structural approaches, we uncovered how mammalian CKK binds between two tubulin dimers at the interprotofilament interface on the outer microtubule surface. In vitro reconstitution assays combined with high-resolution fluorescence microscopy and cryo-electron tomography suggested that CKK preferentially associates with the transition zone between curved protofilaments and the regular microtubule lattice. We propose that minus-end-specific features of the interprotofilament interface at this site serve as the basis for CKK's minus-end preference. The steric clash between microtubule-bound CKK and kinesin motors explains how CKK protects microtubule minus ends against kinesin-13-induced depolymerization and thus controls the stability of free microtubule minus ends.


    Organizational Affiliation

    Institute of Structural and Molecular Biology, Birkbeck, University of London, London, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tubulin alpha chain
D, A
439Bos taurusN/A
Find proteins for P81947 (Bos taurus)
Go to UniProtKB:  P81947
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tubulin beta-2B chain
E, B
427Bos taurusGene Names: TUBB2B
Find proteins for Q6B856 (Bos taurus)
Go to Gene View: TUBB2B
Go to UniProtKB:  Q6B856
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Calmodulin-regulated spectrin-associated protein 3
C
118Mus musculusGene Names: Camsap3 (Kiaa1543)
Find proteins for Q80VC9 (Mus musculus)
Go to UniProtKB:  Q80VC9
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
B, E
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
GTP
Query on GTP

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Download CCD File 
A, D
GUANOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O14 P3
XKMLYUALXHKNFT-UUOKFMHZSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, D
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
TA1
Query on TA1

Download SDF File 
Download CCD File 
B, E
TAXOL
C47 H51 N O14
RCINICONZNJXQF-MZXODVADSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.3 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
European Research CouncilUnited KingdomMR/J000973/1
European Research CouncilUnited KingdomMR/M019292/1
Wellcome TrustUnited Kingdom104196/Z/14/Z
National Institutes of HealthUnited StatesR01GM070862
NWONetherlands718.015.001
Swiss National Science FoundationSwitzerland310030B_138659

Revision History 

  • Version 1.0: 2017-10-04
    Type: Initial release
  • Version 1.1: 2017-10-18
    Type: Database references
  • Version 1.2: 2017-11-15
    Type: Database references