4CA7

Drosophila Angiotensin converting enzyme (AnCE) in complex with a phosphinic tripeptide FI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal Structures of Highly Specific Phosphinic Tripeptide Enantiomers in Complex with the Angiotensin-I Converting Enzyme.

Masuyer, G.Akif, M.Czarny, B.Beau, F.Schwager, S.L.Sturrock, E.D.Isaac, R.E.Dive, V.Acharya, K.R.

(2014) FEBS J. 281: 943

  • DOI: 10.1111/febs.12660
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Human somatic angiotensin-I converting enzyme (ACE) is a zinc-dependent dipeptidyl carboxypeptidase and a central component of the renin angiotensin aldosterone system (RAAS). Its involvement in the modulation of physiological actions of peptide horm ...

    Human somatic angiotensin-I converting enzyme (ACE) is a zinc-dependent dipeptidyl carboxypeptidase and a central component of the renin angiotensin aldosterone system (RAAS). Its involvement in the modulation of physiological actions of peptide hormones has positioned ACE as an important therapeutic target for the treatment of hypertension and cardiovascular disorders. Here, we report the crystal structures of the two catalytic domains of human ACE (N- and C-) in complex with FI, the S enantiomer of the phosphinic ACE/ECE-1 (endothelin converting enzyme) dual inhibitor FII, to a resolution of 1.91 and 1.85 Å, respectively. In addition, we have determined the structure of AnCE (an ACE homologue from Drosophila melanogaster) in complex with both isomers. The inhibitor FI (S configuration) can adapt to the active site of ACE catalytic domains and shows key differences in its binding mechanism mostly through the reorientation of the isoxazole phenyl side group at the P₁' position compared with FII (R configuration). Differences in binding are also observed between FI and FII in complex with AnCE. Thus, the new structures of the ACE-inhibitor complexes presented here provide useful information for further exploration of ACE inhibitor pharmacophores involving phosphinic peptides and illustrate the role of chirality in enhancing drug specificity.


    Organizational Affiliation

    Department of Biology and Biochemistry, University of Bath, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ANGIOTENSIN-CONVERTING ENZYME
A
598Drosophila melanogasterMutation(s): 0 
Gene Names: Ance (Race)
EC: 3.4.15.1
Find proteins for Q10714 (Drosophila melanogaster)
Go to UniProtKB:  Q10714
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
3EF
Query on 3EF

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A
N-{(2S)-3-[(S)-[(1R)-1-{[(benzyloxy)carbonyl]amino}-2-phenylethyl](hydroxy)phosphoryl]-2-[(3-phenyl-1,2-oxazol-5-yl)methyl]propanoyl}-L-tyrosine
C38 H38 N3 O9 P
ZPFSKFCSVXPMBD-JHOVWCEZSA-N
 Ligand Interaction
MAN
Query on MAN

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A
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
BMA
Query on BMA

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A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

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Download CCD File 
A
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
3EFKi: 24 nM BINDINGMOAD
3EFKi: 44 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.176 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 173.743α = 90.00
b = 173.743β = 90.00
c = 102.178γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
XDSdata reduction
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-12-11
    Type: Initial release
  • Version 1.1: 2014-02-12
    Type: Database references