4APH

Human angiotensin-converting enzyme in complex with angiotensin-II

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 

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Literature

Molecular Recognition and Regulation of Human Angiotensin-I Converting Enzyme (Ace) Activity by Natural Inhibitory Peptides.

Masuyer, G., Schwager, S.L.U., Sturrock, E.D., Isaac, R.E., Acharya, K.R.

(2012) Sci Rep 2: 717

  • DOI: 10.1038/srep00717
  • Primary Citation of Related Structures:  
    4APH, 4APJ

  • PubMed Abstract: 

    • Angiotensin-I converting enzyme (ACE), a two-domain dipeptidylcarboxypeptidase, is a key regulator of blood pressure as a result of its critical role in the renin-angiotensin-aldosterone and kallikrein-kinin systems. Hence it is an important drug target ...

    Angiotensin-I converting enzyme (ACE), a two-domain dipeptidylcarboxypeptidase, is a key regulator of blood pressure as a result of its critical role in the renin-angiotensin-aldosterone and kallikrein-kinin systems. Hence it is an important drug target in the treatment of cardiovascular diseases. ACE is primarily known for its ability to cleave angiotensin I (Ang I) to the vasoactive octapeptide angiotensin II (Ang II), but is also able to cleave a number of other substrates including the vasodilator bradykinin and N-acetyl-Ser-Asp-Lys-Pro (Ac-SDKP), a physiological modulator of hematopoiesis. For the first time we provide a detailed biochemical and structural basis for the domain selectivity of the natural peptide inhibitors of ACE, bradykinin potentiating peptide b and Ang II. Moreover, Ang II showed selective competitive inhibition of the carboxy-terminal domain of human somatic ACE providing evidence for a regulatory role in the human renin-angiotensin system (RAS).

    Organizational Affiliation: 

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



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ANGIOTENSIN-CONVERTING ENZYME A589Homo sapiensMutation(s): 0 
Gene Names: ACE, DCP, DCP1
EC: 3.2.1 (PDB Primary Data), 3.4.15.1 (PDB Primary Data)
Find proteins for P12821 (Homo sapiens)
Explore P12821 
Go to UniProtKB:  P12821
NIH Common Fund Data Resources
PHAROS:  P12821
GTEx:  ENSG00000159640
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ANGIOTENSIN-2 P8Homo sapiensMutation(s): 0 
Gene Names: AGT, SERPINA8
Find proteins for P01019 (Homo sapiens)
Explore P01019 
Go to UniProtKB:  P01019
NIH Common Fund Data Resources
PHAROS:  P01019
GTEx:  ENSG00000135744
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
B
3 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PE4
Query on PE4
Download Ideal Coordinates CCD File 
A
2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL
C16 H34 O8
PJWQOENWHPEPKI-UHFFFAOYSA-N		 Ligand Interaction
NAG
Query on NAG
Download Ideal Coordinates CCD File 
A
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N		 Ligand Interaction
ZN
Query on ZN
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A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
ACT
Query on ACT
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A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M		 Ligand Interaction
CL
Query on CL
Download Ideal Coordinates CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.99 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 56.5α = 90
b = 84.66β = 90
c = 133.97γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-10-17
    Type: Initial release
  • Version 1.1: 2012-10-24
    Changes: Database references
  • Version 1.2: 2017-01-25
    Changes: Atomic model, Derived calculations, Non-polymer description, Other
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary