6OIF

Cryo-EM structure of human TorsinA filament

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2019-04-09 Released: 2019-07-24 
  • Deposition Author(s): Zheng, W., Demircioglu, F.E., Schwartz, T.U., Egelman, E.H.
  • Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS), National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The AAA + ATPase TorsinA polymerizes into hollow helical tubes with 8.5 subunits per turn.

Demircioglu, F.E.Zheng, W.McQuown, A.J.Maier, N.K.Watson, N.Cheeseman, I.M.Denic, V.Egelman, E.H.Schwartz, T.U.

(2019) Nat Commun 10: 3262-3262

  • DOI: 10.1038/s41467-019-11194-w
  • Primary Citation of Related Structures:  
    6OIF

  • PubMed Abstract: 
  • TorsinA is an ER-resident AAA + ATPase, whose deletion of glutamate E303 results in the genetic neuromuscular disease primary dystonia. TorsinA is an unusual AAA + ATPase that needs an external activator. Also, it likely does not thread a peptide substrate through a narrow central channel, in contrast to its closest structural homologs ...

    TorsinA is an ER-resident AAA + ATPase, whose deletion of glutamate E303 results in the genetic neuromuscular disease primary dystonia. TorsinA is an unusual AAA + ATPase that needs an external activator. Also, it likely does not thread a peptide substrate through a narrow central channel, in contrast to its closest structural homologs. Here, we examined the oligomerization of TorsinA to get closer to a molecular understanding of its still enigmatic function. We observe TorsinA to form helical filaments, which we analyzed by cryo-electron microscopy using helical reconstruction. The 4.4 Å structure reveals long hollow tubes with a helical periodicity of 8.5 subunits per turn, and an inner channel of ~ 4 nm diameter. We further show that the protein is able to induce tubulation of membranes in vitro, an observation that may reflect an entirely new characteristic of AAA + ATPases. We discuss the implications of these observations for TorsinA function.


    Organizational Affiliation

    Department of Biology, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA. tus@mit.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Torsin-1A
A, B, C, D, E, F, G, H
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y
282Homo sapiensMutation(s): 0 
Gene Names: TOR1ADQ2DYT1TATORA
EC: 3.6.4
UniProt & NIH Common Fund Data Resources
Find proteins for O14656 (Homo sapiens)
Explore O14656 
Go to UniProtKB:  O14656
PHAROS:  O14656
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ATP
Query on ATP

Download Ideal Coordinates CCD File 
AA [auth B] , BA [auth C] , CA [auth D] , DA [auth E] , EA [auth F] , FA [auth G] , GA [auth H] , HA [auth I] , 
AA [auth B],  BA [auth C],  CA [auth D],  DA [auth E],  EA [auth F],  FA [auth G],  GA [auth H],  HA [auth I],  IA [auth J],  JA [auth K],  KA [auth L],  LA [auth M],  MA [auth N],  NA [auth O],  OA [auth P],  PA [auth Q],  QA [auth R],  RA [auth S],  SA [auth T],  TA [auth U],  UA [auth V],  VA [auth W],  WA [auth X],  XA [auth X],  Z [auth A]
ADENOSINE-5'-TRIPHOSPHATE
C10 H16 N5 O13 P3
ZKHQWZAMYRWXGA-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35GM122510
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)United StatesAR065484

Revision History  (Full details and data files)

  • Version 1.0: 2019-07-24
    Type: Initial release
  • Version 1.1: 2019-08-07
    Changes: Data collection, Database references
  • Version 1.2: 2019-12-11
    Changes: Author supporting evidence