3NRY

Insights into anti-parallel microtubule crosslinking by PRC1, a conserved microtubule binding protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.238 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Insights into Antiparallel Microtubule Crosslinking by PRC1, a Conserved Nonmotor Microtubule Binding Protein.

Subramanian, R.Wilson-Kubalek, E.M.Arthur, C.P.Bick, M.J.Campbell, E.A.Darst, S.A.Milligan, R.A.Kapoor, T.M.

(2010) Cell 142: 433-443

  • DOI: 10.1016/j.cell.2010.07.012
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Formation of microtubule architectures, required for cell shape maintenance in yeast, directional cell expansion in plants and cytokinesis in eukaryotes, depends on antiparallel microtubule crosslinking by the conserved MAP65 protein family. Here, we ...

    Formation of microtubule architectures, required for cell shape maintenance in yeast, directional cell expansion in plants and cytokinesis in eukaryotes, depends on antiparallel microtubule crosslinking by the conserved MAP65 protein family. Here, we combine structural and single molecule fluorescence methods to examine how PRC1, the human MAP65, crosslinks antiparallel microtubules. We find that PRC1's microtubule binding is mediated by a structured domain with a spectrin-fold and an unstructured Lys/Arg-rich domain. These two domains, at each end of a homodimer, are connected by a linkage that is flexible on single microtubules, but forms well-defined crossbridges between antiparallel filaments. Further, we show that PRC1 crosslinks are compliant and do not substantially resist filament sliding by motor proteins in vitro. Together, our data show how MAP65s, by combining structural flexibility and rigidity, tune microtubule associations to establish crosslinks that selectively "mark" antiparallel overlap in dynamic cytoskeletal networks.


    Organizational Affiliation

    Laboratory of Chemistry and Cell Biology, The Rockefeller University, New York, NY 10065, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Protein regulator of cytokinesis 1
A
130Homo sapiensMutation(s): 0 
Gene Names: PRC1
Find proteins for O43663 (Homo sapiens)
Go to Gene View: PRC1
Go to UniProtKB:  O43663
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.238 
  • Space Group: P 62
Unit Cell:
Length (Å)Angle (°)
a = 51.043α = 90.00
b = 51.043β = 90.00
c = 90.347γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
SHARPphasing
HKL-2000data reduction
HKL-2000data scaling
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance