1UZE

Complex of the anti-hypertensive drug enalaprilat and the human testicular angiotensin I-converting enzyme


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.188 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural Details on the Binding of Antihypertensive Drugs Captopril and Enalaprilat to Human Testicular Angiotensin I-Converting Enzyme

Natesh, R.Schwager, S.L.U.Evans, H.R.Sturrock, E.D.Acharya, K.R.

(2004) Biochemistry 43: 8718

  • DOI: 10.1021/bi049480n
  • Primary Citation of Related Structures:  
    1UZF, 1UZE

  • PubMed Abstract: 
  • Angiotensin converting enzyme (ACE) plays a critical role in the circulating or endocrine renin-angiotensin system (RAS) as well as the local regulation that exists in tissues such as the myocardium and skeletal muscle. Here we report the high-resolu ...

    Angiotensin converting enzyme (ACE) plays a critical role in the circulating or endocrine renin-angiotensin system (RAS) as well as the local regulation that exists in tissues such as the myocardium and skeletal muscle. Here we report the high-resolution crystal structures of testis ACE (tACE) in complex with the first successfully designed ACE inhibitor captopril and enalaprilat, the Phe-Ala-Pro analogue. We have compared these structures with the recently reported structure of a tACE-lisinopril complex [Natesh et al. (2003) Nature 421, 551-554]. The analyses reveal that all three inhibitors make direct interactions with the catalytic Zn(2+) ion at the active site of the enzyme: the thiol group of captopril and the carboxylate group of enalaprilat and lisinopril. Subtle differences are also observed at other regions of the binding pocket. These are compared with N-domain models and discussed with reference to published biochemical data. The chloride coordination geometries of the three structures are discussed and compared with other ACE analogues. It is anticipated that the molecular details provided by these structures will be used to improve the binding and/or the design of new, more potent domain-specific inhibitors of ACE that could serve as new generation antihypertensive drugs.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ANGIOTENSIN CONVERTING ENZYMEA589Homo sapiensMutation(s): 0 
Gene Names: ACEDCPDCP1
EC: 3.2.1 (UniProt), 3.4.15.1 (UniProt)
Find proteins for P12821 (Homo sapiens)
Explore P12821 
Go to UniProtKB:  P12821
NIH Common Fund Data Resources
PHAROS  P12821
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EAL
Query on EAL

Download CCD File 
A
1-((2S)-2-{[(1S)-1-CARBOXY-3-PHENYLPROPYL]AMINO}PROPANOYL)-L-PROLINE
C18 H24 N2 O5
LZFZMUMEGBBDTC-QEJZJMRPSA-N
 Ligand Interaction
GLY
Query on GLY

Download CCD File 
A
GLYCINE
C2 H5 N O2
DHMQDGOQFOQNFH-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
EALIC50:  3.0999999046325684   nM  BindingDB
EALIC50:  1.2000000476837158   nM  BindingDB
EALIC50:  2.4000000953674316   nM  BindingDB
EALIC50:  3100   nM  BindingDB
EALIC50:  2.9000000953674316   nM  BindingDB
EALIC50:  3.9800000190734863   nM  BindingDB
EALIC50:  2.5   nM  BindingDB
EALIC50 :  1.2699999809265137   nM  PDBBind
EALIC50:  2.5999999046325684   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.82 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.188 
  • R-Value Observed: 0.188 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.72α = 90
b = 85.35β = 90
c = 133.73γ = 90
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-07-16
    Type: Initial release
  • Version 1.1: 2011-05-07
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance