1R42

Native Human Angiotensin Converting Enzyme-Related Carboxypeptidase (ACE2)

• PDB DOI: https://doi.org/10.2210/pdb1R42/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2003-10-07 Released: 2004-02-03 
• Deposition Author(s): Towler, P., Staker, B., Prasad, S.G., Menon, S., Ryan, D., Tang, J., Parsons, T., Fisher, M., Williams, D., Dales, N.A., Patane, M.A., Pantoliano, M.W.

---

Experimental Data Snapshot

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

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A2B1C1D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 5-mer - A1B1C1D1E1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 76.77 kDa 
• Atom Count: 5,511 
• Modelled Residue Count: 655 
• Deposited Residue Count: 673 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
angiotensin I converting enzyme 2	A	615	Homo sapiens	Mutation(s): 0  Gene Names: ACE2
UniProt & NIH Common Fund Data Resources
Find proteins for Q9BYF1 (Homo sapiens) Explore Q9BYF1  Go to UniProtKB:  Q9BYF1
PHAROS:  Q9BYF1 GTEx:  ENSG00000130234

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
disordered segment of collectrin homology domain	B	6	Homo sapiens	Mutation(s): 0  Gene Names: ACE2

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
disordered segment of collectrin homology domain	C	20	Homo sapiens	Mutation(s): 0  Gene Names: ACE2

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
disordered segment of collectrin homology domain	D	18	Homo sapiens	Mutation(s): 0  Gene Names: ACE2

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
disordered segment of collectrin homology domain	E	14	Homo sapiens	Mutation(s): 0  Gene Names: ACE2

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	F [auth A], G [auth A], H [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
ZN	J [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	I [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

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 = 103.638	α = 90
b = 89.478	β = 109.15
c = 112.399	γ = 90

Software Package:

Software Name	Purpose
CNX	refinement
DENZO	data reduction
SCALEPACK	data scaling
MLPHARE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-02-03 
Deposition Author(s): Towler, P., Staker, B., Prasad, S.G., Menon, S., Ryan, D., Tang, J., Parsons, T., Fisher, M., Williams, D., Dales, N.A., Patane, M.A., Pantoliano, M.W.

Revision History  

• 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