4CA5

Human Angiotensin converting enzyme in complex with a phosphinic tripeptide FI

• PDB DOI: https://doi.org/10.2210/pdb4CA5/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Cricetulus griseus
• Mutation(s): No 


• Deposited: 2013-10-07 Released: 2013-12-11 
• Deposition Author(s): Masuyer, G., Akif, M., Czarny, B., Beau, F., Schwager, S.L.U., Sturrock, E.D., Isaac, R.E., Dive, V., Acharya, K.R.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.213 
• R-Value Work: 0.181 
• R-Value Observed: 0.182 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 69.99 kDa 
• Atom Count: 5,309 
• Modelled Residue Count: 586 
• Deposited Residue Count: 589 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ANGIOTENSIN-CONVERTING ENZYME	A	589	Homo sapiens	Mutation(s): 0  EC: 3.2.1 (PDB Primary Data), 3.4.15.1 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P12821 (Homo sapiens) Explore P12821  Go to UniProtKB:  P12821
PHAROS:  P12821 GTEx:  ENSG00000159640

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	B	3		N-Glycosylation
Glycosylation Resources
GlyTouCan:  G21290RB GlyCosmos:  G21290RB GlyGen:  G21290RB

Small Molecules

Ligands 6 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
3EF	J [auth A]	N-{(2S)-3-[(S)-[(1R)-1-{[(benzyloxy)carbonyl]amino}-2-phenylethyl](hydroxy)phosphoryl]-2-[(3-phenyl-1,2-oxazol-5-yl)methyl]propanoyl}-L-tyrosine C38 H38 N3 O9 P ZPFSKFCSVXPMBD-JHOVWCEZSA-N
NAG	K [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
PEG	I [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
ZN	C [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT	F [auth A], G [auth A], H [auth A]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
CL	D [auth A], E [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Binding Affinity Annotations
ID	Source	Binding Affinity
3EF	PDBBind:  4CA5	Ki: 0.41 (nM) from 1 assay(s)
	Binding MOAD:  4CA5	Ki: 0.41 (nM) from 1 assay(s)
	BindingDB:  4CA5	Ki: 0.41 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.85 Å
• R-Value Free: 0.213 
• R-Value Work: 0.181 
• R-Value Observed: 0.182 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 56.43	α = 90
b = 84.98	β = 90
c = 133.9	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-12-11 
Deposition Author(s): Masuyer, G., Akif, M., Czarny, B., Beau, F., Schwager, S.L.U., Sturrock, E.D., Isaac, R.E., Dive, V., Acharya, K.R.

Revision History  

• Version 1.0: 2013-12-11
  Type: Initial release
  
• Version 1.1: 2014-02-12
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Other, Structure summary
• Version 2.1: 2023-12-20
  Changes: Data collection, Database references, Refinement description, Structure summary