7ZIH

Crystal structure of human tryptophan hydroxylase 1 in complex with inhibitor AG-01-128


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Structure-Based Design of Xanthine-Benzimidazole Derivatives as Novel and Potent Tryptophan Hydroxylase Inhibitors.

Specker, E.Matthes, S.Wesolowski, R.Schutz, A.Grohmann, M.Alenina, N.Pleimes, D.Mallow, K.Neuenschwander, M.Gogolin, A.Weise, M.Pfeifer, J.Ziebart, N.Heinemann, U.von Kries, J.P.Nazare, M.Bader, M.

(2022) J Med Chem 65: 11126-11149

  • DOI: https://doi.org/10.1021/acs.jmedchem.2c00598
  • Primary Citation of Related Structures:  
    7ZIF, 7ZIG, 7ZIH, 7ZII, 7ZIJ, 7ZIK

  • PubMed Abstract: 

    Tryptophan hydroxylases catalyze the first and rate-limiting step in the synthesis of serotonin. Serotonin is a key neurotransmitter in the central nervous system and, in the periphery, functions as a local hormone with multiple physiological functions. Studies in genetically altered mouse models have shown that dysregulation of peripheral serotonin levels leads to metabolic, inflammatory, and fibrotic diseases. Overproduction of serotonin by tumor cells causes severe symptoms typical for the carcinoid syndrome, and tryptophan hydroxylase inhibitors are already in clinical use for patients suffering from this disease. Here, we describe a novel class of potent tryptophan hydroxylase inhibitors, characterized by spanning all active binding sites important for catalysis, specifically those of the cosubstrate pterin, the substrate tryptophan as well as directly chelating the catalytic iron ion. The inhibitors were designed to efficiently reduce serotonin in the periphery while not passing the blood-brain barrier, thus preserving serotonin levels in the brain.


  • Organizational Affiliation

    Chemical Biology Platform, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str.10, 13125 Berlin-Buch, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Tryptophan 5-hydroxylase 1326Homo sapiensMutation(s): 0 
Gene Names: TPH1TPHTPRHTRPH
EC: 1.14.16.4
UniProt & NIH Common Fund Data Resources
Find proteins for P17752 (Homo sapiens)
Explore P17752 
Go to UniProtKB:  P17752
PHAROS:  P17752
GTEx:  ENSG00000129167 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17752
Sequence Annotations
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  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
JCR BindingDB:  7ZIH IC50: 430 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.177 
  • R-Value Work: 0.146 
  • R-Value Observed: 0.148 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.88α = 90
b = 57.853β = 97.544
c = 59.268γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Helmholtz AssociationGermany--

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-07
    Type: Initial release
  • Version 1.1: 2024-01-31
    Changes: Data collection, Refinement description