RCSB PDB - 1R42: Native Human Angiotensin Converting Enzyme-Related Carboxypeptidase (ACE2)

 1R42

Native Human Angiotensin Converting Enzyme-Related Carboxypeptidase (ACE2)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.235 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NAGClick on this verticalbar to view details

This is version 1.5 of the entry. See complete history


Literature

ACE2 X-ray structures reveal a large hinge-bending motion important for inhibitor binding and catalysis.

Towler, P.Staker, B.Prasad, S.G.Menon, S.Tang, J.Parsons, T.Ryan, D.Fisher, M.Williams, D.Dales, N.A.Patane, M.A.Pantoliano, M.W.

(2004) J Biol Chem 279: 17996-18007

  • DOI: https://doi.org/10.1074/jbc.M311191200
  • Primary Citation of Related Structures:  
    1R42, 1R4L

  • PubMed Abstract: 

    The angiotensin-converting enzyme (ACE)-related carboxypeptidase, ACE2, is a type I integral membrane protein of 805 amino acids that contains one HEXXH + E zinc-binding consensus sequence. ACE2 has been implicated in the regulation of heart function and also as a functional receptor for the coronavirus that causes the severe acute respiratory syndrome (SARS). To gain further insights into this enzyme, the first crystal structures of the native and inhibitor-bound forms of the ACE2 extracellular domains were solved to 2.2- and 3.0-A resolution, respectively. Comparison of these structures revealed a large inhibitor-dependent hinge-bending movement of one catalytic subdomain relative to the other ( approximately 16 degrees ) that brings important residues into position for catalysis. The potent inhibitor MLN-4760 ((S,S)-2-[1-carboxy-2-[3-(3,5-dichlorobenzyl)-3H-imidazol4-yl]-ethylamino]-4-methylpentanoic acid) makes key binding interactions within the active site and offers insights regarding the action of residues involved in catalysis and substrate specificity. A few active site residue substitutions in ACE2 relative to ACE appear to eliminate the S(2)' substrate-binding subsite and account for the observed reactivity change from the peptidyl dipeptidase activity of ACE to the carboxypeptidase activity of ACE2.


  • Organizational Affiliation

    Drug Discovery and Protein Sciences, Millennium Pharmaceuticals, Incorporated, Cambridge, Massachusetts 02139, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
angiotensin I converting enzyme 2615Homo sapiensMutation(s): 0 
Gene Names: ACE2
EC: 3.4.17 (UniProt), 3.4.17.23 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BYF1 (Homo sapiens)
Explore Q9BYF1 
Go to UniProtKB:  Q9BYF1
PHAROS:  Q9BYF1
GTEx:  ENSG00000130234 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9BYF1
Glycosylation
Glycosylation Sites: 3Go to GlyGen: Q9BYF1-1
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
disordered segment of collectrin homology domain6Homo sapiensMutation(s): 0 
Gene Names: ACE2
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
disordered segment of collectrin homology domain20Homo sapiensMutation(s): 0 
Gene Names: ACE2
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
disordered segment of collectrin homology domain18Homo sapiensMutation(s): 0 
Gene Names: ACE2
Sequence Annotations
Expand
  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
disordered segment of collectrin homology domain14Homo sapiensMutation(s): 0 
Gene Names: ACE2
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.287 
  • R-Value Work: 0.235 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.638α = 90
b = 89.478β = 109.15
c = 112.399γ = 90
Software Package:
Software NamePurpose
CNXrefinement
DENZOdata reduction
SCALEPACKdata scaling
MLPHAREphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 

Created with Raphaël 2.3.0Worse 01 BetterLigand structure goodness of fit to experimental dataBest fitted NAGClick on this verticalbar to view details

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-02-03
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2018-01-24
    Changes: Database references
  • Version 1.4: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Structure summary
  • Version 1.5: 2024-10-16
    Changes: Data collection, Database references, Structure summary