2JAI

DDAH1 complexed with citrulline


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 

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
  • Structures With Same Primary Citation

  • 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 1A, B289Homo sapiensMutation(s): 0 
Gene Names: DDAH1DDAH
EC: 3.5.3.18
Find proteins for O94760 (Homo sapiens)
Explore O94760 
Go to UniProtKB:  O94760
NIH Common Fund Data Resources
PHAROS  O94760
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CIR
Query on CIR

Download CCD File 
A
CITRULLINE
C6 H13 N3 O3
RHGKLRLOHDJJDR-BYPYZUCNSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A,BL-PEPTIDE LINKINGC5 H11 N O2 SeMET
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
CIRKi:  3700000   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.201 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.831α = 90
b = 46.799β = 94.64
c = 147.787γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
SHELXDphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-13
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Version format compliance
  • Version 1.2: 2018-02-28
    Changes: Database references, Source and taxonomy, Structure summary
  • Version 1.3: 2019-05-08
    Changes: Data collection, Derived calculations, Experimental preparation