Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 71.98 kDa 
• Atom Count: 5538 
• Residue Count: 602 
• Unique protein chains: 2

4ASQ

Crystal structure of ANCE in complex with Bradykinin

• DOI: 10.2210/pdb4ASQ/pdb

• Classification: HYDROLASE
• Organism(s): Drosophila melanogaster, Homo sapiens
• Expression System: Komagataella phaffii GS115
• Mutation(s): No 


• Deposited: 2012-05-02 Released: 2012-10-31 
• Deposition Author(s): Akif, M., Masuyer, G., Sturrock, E.D., Isaac, R.E., Acharya, K.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.99 Å
• R-Value Free: 0.200 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 

Literature

Structural Basis of Peptide Recognition by the Angiotensin-I Converting Enzyme Homologue Ance from Drosophila Melanogaster

Akif, M., Masuyer, G., Bingham, R.J., Sturrock, E.D., Isaac, R.E., Acharya, K.R.

(2012) FEBS J 279: 4525

• PubMed: 23082758 
• DOI: 10.1111/febs.12038
• Primary Citation of Related Structures:  
  4AA1, 4AA2, 4ASQ, 4ASR


• PubMed Abstract: 
  

Human somatic angiotensin-1 converting enzyme (ACE) is a zinc-dependent exopeptidase, that catalyses the conversion of the decapeptide angiotensin I to the octapeptide angiotensin II, by removing a C-terminal dipeptide. It is the principal component of the renin-angiotensin-aldosterone system that regulates blood pressure. Hence it is an important therapeutic target for the treatment of hypertension and cardiovascular disorders. Here, we report the structures of an ACE homologue from Drosophila melanogaster (AnCE; a proven structural model for the more complex human ACE) co-crystallized with mammalian peptide substrates (bradykinin, Thr(6) -bradykinin, angiotensin I and a snake venom peptide inhibitor, bradykinin-potentiating peptide-b). The structures determined at 2-Å resolution illustrate that both angiotensin II (the cleaved product of angiotensin I by AnCE) and bradykinin-potentiating peptide-b bind in an analogous fashion at the active site of AnCE, but also exhibit significant differences. In addition, the binding of Arg-Pro-Pro, the cleavage product of bradykinin and Thr(6) - bradykinin, provides additional detail of the general peptide binding in AnCE. Thus the new structures of AnCE complexes presented here improves our understanding of the binding of peptides and the mechanism by which peptides inhibit this family of enzymes.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANGIOTENSIN-CONVERTING ENZYME	A	598	Drosophila melanogaster	Mutation(s): 0  Gene Names: Ance, Race, CG8827 EC: 3.4.15.1
Find proteins for Q10714 (Drosophila melanogaster) Explore Q10714  Go to UniProtKB:  Q10714

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
BRADYKININ	P	9	Homo sapiens	Mutation(s): 0  Gene Names: KNG1, BDK, KNG
Find proteins for P01042 (Homo sapiens) Explore P01042  Go to UniProtKB:  P01042
NIH Common Fund Data Resources
PHAROS  P01042 GTEx  ENSG00000113889

Oligosaccharides

Help

Entity ID: 3
Molecule	Chains	Chain Length	2D Diagram
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	6

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	A	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
FLC	A	CITRATE ANION C6 H5 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-K
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.99 Å
• R-Value Free: 0.200 
• R-Value Work: 0.180 
• R-Value Observed: 0.181 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 173.125	α = 90
b = 173.125	β = 90
c = 101.673	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
TRUNCATE	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-05-02 
• Released Date: 2012-10-31 
Deposition Author(s): Akif, M., Masuyer, G., Sturrock, E.D., Isaac, R.E., Acharya, K.R.

Revision History 

• Version 1.0: 2012-10-31
  Type: Initial release
  
• Version 1.1: 2012-12-05
  Changes: Database references
• Version 1.2: 2012-12-19
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary