4TVS

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.181 

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

  • 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 th ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Torsin-1A-interacting protein 1
A, B
231Homo sapiensGene Names: TOR1AIP1 (LAP1)
Find proteins for Q5JTV8 (Homo sapiens)
Go to Gene View: TOR1AIP1
Go to UniProtKB:  Q5JTV8
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
VHH Domain BS-1
a, b
134N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
a, b
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.229 
  • R-Value Work: 0.181 
  • Space Group: P 1 21 1
  • Diffraction Data DOI: 
    10.15785/SBGRID/12 SBGrid
Unit Cell:
Length (Å)Angle (°)
a = 69.786α = 90.00
b = 74.021β = 108.79
c = 85.425γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
Dystonia Medical Research FoundationUnited States--

Revision History 

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