4TVS

LAP1(aa356-583), H.sapiens, bound to VHH-BS1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

How lamina-associated polypeptide 1 (LAP1) activates Torsin.

Sosa, B.A.Demircioglu, F.E.Chen, J.Z.Ingram, J.Ploegh, H.L.Schwartz, T.U.

(2014) Elife 3: e03239-e03239

  • DOI: 10.7554/eLife.03239
  • Primary Citation of Related Structures:  
    4TVS

  • PubMed Abstract: 
  • Lamina-associated polypeptide 1 (LAP1) resides at the nuclear envelope and interacts with Torsins, poorly understood endoplasmic reticulum (ER)-localized AAA+ ATPases, through a conserved, perinuclear domain. We determined the crystal structure of the perinuclear domain of human LAP1 ...

    Lamina-associated polypeptide 1 (LAP1) resides at the nuclear envelope and interacts with Torsins, poorly understood endoplasmic reticulum (ER)-localized AAA+ ATPases, through a conserved, perinuclear domain. We determined the crystal structure of the perinuclear domain of human LAP1. LAP1 possesses an atypical AAA+ fold. While LAP1 lacks canonical nucleotide binding motifs, its strictly conserved arginine 563 is positioned exactly where the arginine finger of canonical AAA+ ATPases is found. Based on modeling and electron microscopic analysis, we propose that LAP1 targets Torsin to the nuclear envelope by forming an alternating, heterohexameric (LAP1-Torsin)3 ring, in which LAP1 acts as the Torsin activator. The experimental data show that mutation of arginine 563 in LAP1 reduces its ability to stimulate TorsinA ATPase hydrolysis. This knowledge may help scientists understand the etiology of DYT1 primary dystonia, a movement disorder caused by a single glutamate deletion in TorsinA.


    Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology, Cambridge, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Torsin-1A-interacting protein 1A, B231Homo sapiensMutation(s): 0 
Gene Names: TOR1AIP1LAP1
UniProt & NIH Common Fund Data Resources
Find proteins for Q5JTV8 (Homo sapiens)
Explore Q5JTV8 
Go to UniProtKB:  Q5JTV8
PHAROS:  Q5JTV8
Entity Groups  
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UniProt GroupQ5JTV8
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
VHH Domain BS-1C [auth a],
D [auth b]
134Vicugna pacosMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.182 
  • Space Group: P 1 21 1
  • Diffraction Data DOI: 10.15785/SBGRID/12 SBGrid
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 69.786α = 90
b = 74.021β = 108.79
c = 85.425γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Dystonia Medical Research FoundationUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2014-09-03
    Type: Initial release
  • Version 1.1: 2014-09-10
    Changes: Database references
  • Version 1.2: 2014-10-01
    Changes: Database references
  • Version 1.3: 2014-10-29
    Changes: Database references