6SCJ

The structure of human thyroglobulin


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of human thyroglobulin.

Coscia, F.Taler-Vercic, A.Chang, V.T.Sinn, L.O'Reilly, F.J.Izore, T.Renko, M.Berger, I.Rappsilber, J.Turk, D.Lowe, J.

(2020) Nature 578: 627-630

  • DOI: 10.1038/s41586-020-1995-4

  • PubMed Abstract: 
  • Thyroglobulin (TG) is the protein precursor of thyroid hormones, which are essential for growth, development and the control of metabolism in vertebrates <sup>1,2 </sup>. Hormone synthesis from TG occurs in the thyroid gland via the iodination and co ...

    Thyroglobulin (TG) is the protein precursor of thyroid hormones, which are essential for growth, development and the control of metabolism in vertebrates 1,2 . Hormone synthesis from TG occurs in the thyroid gland via the iodination and coupling of pairs of tyrosines, and is completed by TG proteolysis 3 . Tyrosine proximity within TG is thought to enable the coupling reaction but hormonogenic tyrosines have not been clearly identified, and the lack of a three-dimensional structure of TG has prevented mechanistic understanding 4 . Here we present the structure of full-length human thyroglobulin at a resolution of approximately 3.5 Å, determined by cryo-electron microscopy. We identified all of the hormonogenic tyrosine pairs in the structure, and verified them using site-directed mutagenesis and in vitro hormone-production assays using human TG expressed in HEK293T cells. Our analysis revealed that the proximity, flexibility and solvent exposure of the tyrosines are the key characteristics of hormonogenic sites. We transferred the reaction sites from TG to an engineered tyrosine donor-acceptor pair in the unrelated bacterial maltose-binding protein (MBP), which yielded hormone production with an efficiency comparable to that of TG. Our study provides a framework to further understand the production and regulation of thyroid hormones.


    Organizational Affiliation

    Jožef Stefan Institute, Ljubljana, Slovenia.,MRC Laboratory of Molecular Biology, Cambridge, UK.,Jožef Stefan Institute, Ljubljana, Slovenia. dusan.turk@ijs.si.,Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, Ljubljana, Slovenia.,Centre of Excellence for Integrated Approaches in Chemistry and Biology of Proteins, Ljubljana, Slovenia. dusan.turk@ijs.si.,Institute of Biotechnology, Technische Universität Berlin, Berlin, Germany.,Max Planck Bristol Centre for Minimal Biology, University of Bristol, Bristol, UK.,MRC Laboratory of Molecular Biology, Cambridge, UK. jyl@mrc-lmb.cam.ac.uk.,Wellcome Centre for Cell Biology, University of Edinburgh, Edinburgh, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thyroglobulin
A, B
2768Homo sapiensMutation(s): 0 
Gene Names: TG
Find proteins for P01266 (Homo sapiens)
Go to Gene View: TG
Go to UniProtKB:  P01266
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BMA
Query on BMA

Download SDF File 
Download CCD File 
A, B
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.6 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomU105184326 to JL
Wellcome TrustUnited Kingdom202754/Z/16/Z to JL

Revision History 

  • Version 1.0: 2020-02-12
    Type: Initial release
  • Version 1.1: 2020-02-19
    Type: Database references
  • Version 1.2: 2020-03-04
    Type: Database references