2XHM

Crystal structure of AnCE-K26 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 

Starting Model: experimental
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This is version 2.2 of the entry. See complete history


Literature

Crystal Structure of a Phosphonotripeptide K-26 in Complex with Angiotensin Converting Enzyme Homologue (Ance) from Drosophila Melanogaster.

Akif, M.Ntai, I.Sturrock, E.D.Isaac, R.E.Bachmann, B.O.Acharya, K.R.

(2010) Biochem Biophys Res Commun 398: 532

  • DOI: https://doi.org/10.1016/j.bbrc.2010.06.113
  • Primary Citation of Related Structures:  
    2XHM

  • PubMed Abstract: 

    Angiotensin-I converting enzyme (ACE, a zinc dependent dipeptidyl carboxypeptidase) is a major target of drugs due to its role in the modulation of blood pressure and cardiovascular disorders. Here we present a crystal structure of AnCE (an ACE homologue from Drosophila melanogaster with a single enzymatic domain) in complex with a natural product-phosphonotripeptide, K-26 at 1.96A resolution. The inhibitor binds exclusively in the S(1) and S(2) binding pockets of AnCE (coordinating the zinc ion) through ionic and hydrogen bond interactions. A detailed structural comparison of AnCE.K-26 complex with individual domains of human somatic ACE provides useful information for further exploration of ACE inhibitor pharmacophores involving phosphonic acids.


  • Organizational Affiliation

    Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ANGIOTENSIN CONVERTING ENZYME598Drosophila melanogasterMutation(s): 0 
EC: 3.4.15.1
UniProt
Find proteins for Q10714 (Drosophila melanogaster)
Explore Q10714 
Go to UniProtKB:  Q10714
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ10714
Glycosylation
Glycosylation Sites: 3Go to GlyGen: Q10714-1
Sequence Annotations
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
B
6N-Glycosylation
Glycosylation Resources
GlyTouCan:  G64803HZ
GlyCosmos:  G64803HZ
GlyGen:  G64803HZ
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
K26
Query on K26

Download Ideal Coordinates CCD File 
C [auth A]N-ACETYL-L-ILE-L-TYR-(R)-1-AMINO-2-(4-HYDROXYPHENYL)ETHYLPHOSPHONIC ACID
C25 H34 N3 O8 P
ZFRNBYWFOLDQKG-FDMHNHSTSA-N
EPE
Query on EPE

Download Ideal Coordinates CCD File 
E [auth A]4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
NAG
Query on NAG

Download Ideal Coordinates CCD File 
F [auth A],
G [auth A]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
ZN
Query on ZN

Download Ideal Coordinates CCD File 
D [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
K26 PDBBind:  2XHM Ki: 160 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.215 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.195 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 172.707α = 90
b = 172.707β = 90
c = 101.696γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-07-14
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Other, Structure summary
  • Version 2.1: 2023-12-20
    Changes: Data collection, Database references, Refinement description, Structure summary
  • Version 2.2: 2024-10-16
    Changes: Structure summary