8RQO | pdb_00008rqo

Human thyroid hormone receptor alpha ligand binding domain in complex with beta-selective agonist ALG-055009

• PDB DOI: https://doi.org/10.2210/pdb8RQO/pdb

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


• Deposited: 2024-01-18 Released: 2024-09-11 
• Deposition Author(s): Lammens, A., Maskos, K., Stoycheva, A.D., McGowan, D.C.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.74 Å
• R-Value Free: 
  0.228 (Depositor), 0.232 (DCC) 
• R-Value Work: 
  0.193 (Depositor), 0.199 (DCC) 
• R-Value Observed: 
  0.195 (Depositor) 

Starting Model: experimental

Literature

Discovery and Preclinical Profile of ALG-055009, a Potent and Selective Thyroid Hormone Receptor Beta (THR-beta ) Agonist for the Treatment of MASH.

Vandyck, K., McGowan, D.C., Luong, X.G., Stevens, S.K., Jekle, A., Gupta, K., Misner, D.L., Chanda, S., Serebryany, V., Welch, M., Hu, H., Lv, Z., Williams, C., Maskos, K., Lammens, A., Stoycheva, A.D., Lin, T.I., Blatt, L.M., Beigelman, L.N., Symons, J.A., Raboisson, P., Deval, J.

(2024) J Med Chem 67: 14840-14851

• PubMed: 39221768 
• DOI: https://doi.org/10.1021/acs.jmedchem.4c01029
• Primary Citation Related Structures: 
  8RQN, 8RQO


• PubMed Abstract: 
  

  Agonists of thyroid hormone receptor β (THR-β) decreased LDL cholesterol (LDL-C) and triglyceride (TG) levels in human clinical trials for patients with dyslipidemia. The authors present the highly potent and selective compound ALG-055009 ( 14 ) as a potential best in class THR-β agonist. The high metabolic stability and good permeability translated well in vivo to afford a long in vivo half-life pharmacokinetic profile with limited liability for DDI, and it overcomes certain drawbacks seen in recent clinical candidates.

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Organizational Affiliation: 
• Aligos Belgium BV, Gaston Geenslaan 1, 3001 Leuven, Belgium.
Aligos Therapeutics, Incorporated, 1 Corporate Drive, South San Francisco, California 94080, United States.
Pharmaron, 6 Taihe Road, BDA, Beijing, 100176, P. R. China.
Proteros Biostructures GmbH, Bunsenstraße 7a, 82152 Planegg-Martinsried, Germany.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content 

• Total Structure Weight: 32.77 kDa 
• Atom Count: 2,099 
• Modeled Residue Count: 257 
• Deposited Residue Count: 284 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Isoform Alpha-1 of Thyroid hormone receptor alpha	A	284	Homo sapiens	Mutation(s): 0  Gene Names: THRA, EAR7, ERBA1, NR1A1, THRA1, THRA2
UniProt & NIH Common Fund Data Resources
Find proteins for P10827 (Homo sapiens) Explore P10827  Go to UniProtKB:  P10827
PHAROS:  P10827 GTEx:  ENSG00000126351

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1H2J (Subject of Investigation/LOI)	B [auth A]	6-azanyl-2-[3,5-bis(chloranyl)-4-[(6-oxidanylidene-5-propan-2-yl-1~{H}-pyridazin-3-yl)oxy]phenyl]-1,2,4-triazine-3,5-dione C16 H14 Cl2 N6 O4 YZZBNKVFMULQCU-UHFFFAOYSA-N
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.74 Å
• R-Value Free:  0.228 (Depositor), 0.232 (DCC) 
• R-Value Work:  0.193 (Depositor), 0.199 (DCC) 
• R-Value Observed: 0.195 (Depositor) 

Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 110.199	α = 90
b = 110.199	β = 90
c = 134.579	γ = 120

Software Package:

Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
REFMAC	refinement
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2024-09-11 
Deposition Author(s): Lammens, A., Maskos, K., Stoycheva, A.D., McGowan, D.C.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2024-09-11
  Type: Initial release
  
• Version 1.1: 2024-09-25
  Changes: Database references