Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 73.58 kDa 
• Atom Count: 5842 
• Modelled Residue Count: 635 
• Deposited Residue Count: 646 
• Unique protein chains: 3

5J1S

TorsinA-LULL1 complex, H. sapiens, bound to VHH-BS2

• DOI: 10.2210/pdb5J1S/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens, Vicugna pacos
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2016-03-29 Released: 2016-08-17 
• Deposition Author(s): Demircioglu, F.E., Schwartz, T.U.
• Funding Organization(s): National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.188 
• R-Value Work: 0.143 
• R-Value Observed: 0.144 

Literature

Structures of TorsinA and its disease-mutant complexed with an activator reveal the molecular basis for primary dystonia.

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

(2016) Elife 5

• PubMed: 27490483 
• DOI: 10.7554/eLife.17983
• Primary Citation of Related Structures:  
  5J1T, 5J1S


• PubMed Abstract: 
  

The most common cause of early onset primary dystonia, a neuromuscular disease, is a glutamate deletion (ΔE) at position 302/303 of TorsinA, a AAA+ ATPase that resides in the endoplasmic reticulum. While the function of TorsinA remains elusive, the ΔE mutation is known to diminish binding of two TorsinA ATPase activators: lamina-associated protein 1 (LAP1) and its paralog, luminal domain like LAP1 (LULL1). Using a nanobody as a crystallization chaperone, we obtained a 1.4 Å crystal structure of human TorsinA in complex with LULL1. This nanobody likewise stabilized the weakened TorsinAΔE-LULL1 interaction, which enabled us to solve its structure at 1.4 Å also. A comparison of these structures shows, in atomic detail, the subtle differences in activator interactions that separate the healthy from the diseased state. This information may provide a structural platform for drug development, as a small molecule that rescues TorsinAΔE could serve as a cure for primary dystonia.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Torsin-1A	A	284	Homo sapiens	Mutation(s): 1  Gene Names: TOR1A, DQ2, DYT1, TA, TORA EC: 3.6.4
Find proteins for O14656 (Homo sapiens) Explore O14656  Go to UniProtKB:  O14656
NIH Common Fund Data Resources
PHAROS:  O14656 GTEx:  ENSG00000136827

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Torsin-1A-interacting protein 2	B	239	Homo sapiens	Mutation(s): 0  Gene Names: TOR1AIP2, IFRG15, LULL1
Find proteins for Q8NFQ8 (Homo sapiens) Explore Q8NFQ8  Go to UniProtKB:  Q8NFQ8
NIH Common Fund Data Resources
PHAROS:  Q8NFQ8 GTEx:  ENSG00000169905

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
VHH domain BS-2	C	123	Vicugna pacos	Mutation(s): 0

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ATP	D [auth A]	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N
MES	G [auth A]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
CL	F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	E [auth A], H [auth B], I [auth C]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Free: 0.188 
• R-Value Work: 0.143 
• R-Value Observed: 0.144 
• Space Group: P 2₁ 2₁ 2₁
• Diffraction Data DOI: 10.15785/SBGRID/524 SBGrid

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.739	α = 90
b = 90.659	β = 90
c = 105.092	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
SCALEPACK	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2016-03-29 
• Released Date: 2016-08-17 
Deposition Author(s): Demircioglu, F.E., Schwartz, T.U.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)	United States	AR065484

Revision History  

• Version 1.0: 2016-08-17
  Type: Initial release
  
• Version 1.1: 2017-09-20
  Changes: Author supporting evidence, Derived calculations
• Version 1.2: 2019-12-11
  Changes: Author supporting evidence