4BZS

Human angiotenisn converting enzyme N-domain in complex with K-26


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.235 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

Interkingdom Pharmacology of Angiotensin-I Converting Enzyme Inhibitor Phosphonates Produced by Actinomycetes

Kramer, G.J.Mohd, A.Schwager, S.L.U.Masuyer, G.Acharya, K.R.Sturrock, E.D.Bachmann, B.O.

(2014) ACS Med Chem Lett 5: 346

  • DOI: 10.1021/ml4004588
  • Primary Citation of Related Structures:  
    4BZR, 4BZS

  • PubMed Abstract: 
  • The K-26 family of bacterial secondary metabolites are N-modified tripeptides terminated by an unusual phosphonate analog of tyrosine. These natural products, produced via three different actinomycetales, are potent inhibitors of human angiotensin-I converting enzyme (ACE) ...

    The K-26 family of bacterial secondary metabolites are N-modified tripeptides terminated by an unusual phosphonate analog of tyrosine. These natural products, produced via three different actinomycetales, are potent inhibitors of human angiotensin-I converting enzyme (ACE). Herein we investigate the interkingdom pharmacology of the K-26 family by synthesizing these metabolites and assessing their potency as inhibitors of both the N-terminal and C-terminal domains of human ACE. In most cases, selectivity for the C-terminal domain of ACE is displayed. Co-crystallization of K-26 in both domains of human ACE reveals the structural basis of the potent inhibition and has shown an unusual binding motif that may guide future design of domain-selective inhibitors. Finally, the activity of K-26 is assayed against a cohort of microbially produced ACE relatives. In contrast to the synthetic ACE inhibitor captopril, which demonstrates broad interkingdom inhibition of ACE-like enzymes, K-26 selectively targets the eukaryotic family.


    Organizational Affiliation

    Vanderbilt University Department of Chemistry, 7300 Stevenson Center, Nashville, Tennessee 37204, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ANGIOTENSIN-CONVERTING ENZYMEA, B629Homo sapiensMutation(s): 1 
Gene Names: ACEDCPDCP1
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
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranoseC, F2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 3
MoleculeChainsChain Length2D Diagram Glycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranoseD, G2 N-Glycosylation Oligosaccharides Interaction
Entity ID: 4
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-glucopyranoseE, H3 N-Glycosylation Oligosaccharides Interaction
Small Molecules
Ligands 8 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K26
Query on K26

Download Ideal Coordinates CCD File 
N [auth A], U [auth B]N-ACETYL-L-ILE-L-TYR-(R)-1-AMINO-2-(4-HYDROXYPHENYL)ETHYLPHOSPHONIC ACID
C25 H34 N3 O8 P
ZFRNBYWFOLDQKG-FDMHNHSTSA-N
 Ligand Interaction
PE4
Query on PE4

Download Ideal Coordinates CCD File 
K [auth A]2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL
C16 H34 O8
PJWQOENWHPEPKI-UHFFFAOYSA-N
 Ligand Interaction
P6G
Query on P6G

Download Ideal Coordinates CCD File 
L [auth A]HEXAETHYLENE GLYCOL
C12 H26 O7
IIRDTKBZINWQAW-UHFFFAOYSA-N
 Ligand Interaction
PG4
Query on PG4

Download Ideal Coordinates CCD File 
V [auth B]TETRAETHYLENE GLYCOL
C8 H18 O5
UWHCKJMYHZGTIT-UHFFFAOYSA-N
 Ligand Interaction
9X6
Query on 9X6

Download Ideal Coordinates CCD File 
O [auth A], W [auth B]thiodiglycolic acid
C4 H6 O4 S
UVZICZIVKIMRNE-UHFFFAOYSA-N
 Ligand Interaction
PEG
Query on PEG

Download Ideal Coordinates CCD File 
M [auth A], R [auth B], S [auth B], T [auth B]DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
 Ligand Interaction
ZN
Query on ZN

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I [auth A], P [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
J [auth A], Q [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
K26IC50:  110   nM  BindingDB
K26Ki:  11   nM  BindingDB
K26IC50:  11   nM  BindingDB
K26Ki:  75   nM  Binding MOAD
K26Ki:  75   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.235 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.005α = 88.69
b = 77.32β = 64.53
c = 82.07γ = 75.29
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-02-26
    Type: Initial release
  • Version 1.1: 2014-06-18
    Changes: Database references
  • Version 1.2: 2018-02-07
    Changes: Advisory, Structure summary
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Other, Structure summary