3HAI

Crystal structure of human PACSIN1 F-BAR domain (P21 lattice)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.881 Å
  • R-Value Free: 0.319 
  • R-Value Work: 0.282 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular mechanism of membrane constriction and tubulation mediated by the F-BAR protein Pacsin/Syndapin.

Wang, Q.Navarro, M.V.Peng, G.Molinelli, E.Lin Goh, S.Judson, B.L.Rajashankar, K.R.Sondermann, H.

(2009) Proc.Natl.Acad.Sci.USA 106: 12700-12705

  • DOI: 10.1073/pnas.0902974106
  • Primary Citation of Related Structures:  3HAH, 3HAJ

  • PubMed Abstract: 
  • Peripheral membrane proteins of the Bin/amphiphysin/Rvs (BAR) and Fer-CIP4 homology-BAR (F-BAR) family participate in cellular membrane trafficking and have been shown to generate membrane tubules. The degree of membrane bending appears to be encoded ...

    Peripheral membrane proteins of the Bin/amphiphysin/Rvs (BAR) and Fer-CIP4 homology-BAR (F-BAR) family participate in cellular membrane trafficking and have been shown to generate membrane tubules. The degree of membrane bending appears to be encoded in the structure and immanent curvature of the particular protein domains, with BAR and F-BAR domains inducing high- and low-curvature tubules, respectively. In addition, oligomerization and the formation of ordered arrays influences tubule stabilization. Here, the F-BAR domain-containing protein Pacsin was found to possess a unique activity, creating small tubules and tubule constrictions, in addition to the wide tubules characteristic for this subfamily. Based on crystal structures of the F-BAR domain of Pacsin and mutagenesis studies, vesiculation could be linked to the presence of unique structural features distinguishing it from other F-BAR proteins. Tubulation was suppressed in the context of the full-length protein, suggesting that Pacsin is autoinhibited in solution. The regulated deformation of membranes and promotion of tubule constrictions by Pacsin suggests a more versatile function of these proteins in vesiculation and endocytosis beyond their role as scaffold proteins.


    Organizational Affiliation

    Department of Molecular Medicine, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
human PACSIN1 F-BAR
A, B, C, D
308Homo sapiensGene Names: PACSIN1 (KIAA1379)
Find proteins for Q9BY11 (Homo sapiens)
Go to Gene View: PACSIN1
Go to UniProtKB:  Q9BY11
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.881 Å
  • R-Value Free: 0.319 
  • R-Value Work: 0.282 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 163.620α = 90.00
b = 32.160β = 111.23
c = 181.160γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
ADSCdata collection
PHENIXrefinement
MLPHAREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-06-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance