2JAJ

DDAH1 complexed with L-257


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Disruption of methylarginine metabolism impairs vascular homeostasis.

Leiper, J.Nandi, M.Torondel, B.Murray-Rust, J.Malaki, M.O'Hara, B.Rossiter, S.Anthony, S.Madhani, M.Selwood, D.Smith, C.Wojciak-Stothard, B.Rudiger, A.Stidwill, R.McDonald, N.Q.Vallance, P.

(2007) Nat. Med. 13: 198-203

  • DOI: 10.1038/nm1543
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Asymmetric dimethylarginine (ADMA) and monomethyl arginine (L-NMMA) are endogenously produced amino acids that inhibit all three isoforms of nitric oxide synthase (NOS). ADMA accumulates in various disease states, including renal failure, diabetes an ...

    Asymmetric dimethylarginine (ADMA) and monomethyl arginine (L-NMMA) are endogenously produced amino acids that inhibit all three isoforms of nitric oxide synthase (NOS). ADMA accumulates in various disease states, including renal failure, diabetes and pulmonary hypertension, and its concentration in plasma is strongly predictive of premature cardiovascular disease and death. Both L-NMMA and ADMA are eliminated largely through active metabolism by dimethylarginine dimethylaminohydrolase (DDAH) and thus DDAH dysfunction may be a crucial unifying feature of increased cardiovascular risk. However, despite considerable interest in this pathway and in the role of ADMA as a cardiovascular risk factor, there is little evidence to support a causal role of ADMA in pathophysiology. Here we reveal the structure of human DDAH-1 and probe the function of DDAH-1 both by deleting the DDAH1 gene in mice and by using DDAH-specific inhibitors which, as we demonstrate by crystallography, bind to the active site of human DDAH-1. We show that loss of DDAH-1 activity leads to accumulation of ADMA and reduction in NO signaling. This in turn causes vascular pathophysiology, including endothelial dysfunction, increased systemic vascular resistance and elevated systemic and pulmonary blood pressure. Our results also suggest that DDAH inhibition could be harnessed therapeutically to reduce the vascular collapse associated with sepsis.


    Organizational Affiliation

    Centre for Clinical Pharmacology, Division of Medicine, University College London, London WC1E 6JJ, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NG, NG-DIMETHYLARGININE DIMETHYLAMINOHYDROLASE 1
A, B
289Homo sapiensMutation(s): 0 
Gene Names: DDAH1 (DDAH)
EC: 3.5.3.18
Find proteins for O94760 (Homo sapiens)
Go to Gene View: DDAH1
Go to UniProtKB:  O94760
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
D20
Query on D20

Download SDF File 
Download CCD File 
A, B
N~5~-{IMINO[(2-METHOXYETHYL)AMINO]METHYL}-L-ORNITHINE
C9 H20 N4 O3
XMBSMMCPKFDGEO-ZETCQYMHSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
D20IC50: 29000 nM (100) BINDINGDB
D20Ki: 13000 nM (100) BINDINGDB
D20IC50: <25000 nM BINDINGMOAD
D20IC50: 25000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.263 
  • R-Value Work: 0.211 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 44.849α = 90.00
b = 46.914β = 94.56
c = 147.612γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
MOLREPphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2013-12-04
    Type: Derived calculations, Non-polymer description, Other, Source and taxonomy
  • Version 1.3: 2018-02-28
    Type: Database references