3MFV

Crystal structure of human arginase I in complex with 2-aminohomohistidine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.141 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

2-aminoimidazole amino acids as inhibitors of the binuclear manganese metalloenzyme human arginase I.

Ilies, M.Di Costanzo, L.North, M.L.Scott, J.A.Christianson, D.W.

(2010) J.Med.Chem. 53: 4266-4276

  • DOI: 10.1021/jm100306a
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Arginase, a key metalloenzyme of the urea cycle that converts L-arginine into L-ornithine and urea, is presently considered a pharmaceutical target for the management of diseases associated with aberrant l-arginine homeostasis, such as asthma, cardio ...

    Arginase, a key metalloenzyme of the urea cycle that converts L-arginine into L-ornithine and urea, is presently considered a pharmaceutical target for the management of diseases associated with aberrant l-arginine homeostasis, such as asthma, cardiovascular diseases, and erectile dysfunction. We now report the design, synthesis, and evaluation of a series of 2-aminoimidazole amino acid inhibitors in which the 2-aminoimidazole moiety serves as a guanidine mimetic. These compounds represent a new class of arginase inhibitors. The most potent inhibitor identified in this study, 2-(S)-amino-5-(2-aminoimidazol-1-yl)pentanoic acid (A1P, 10), binds to human arginase I with K(d) = 2 microM and significantly attenuates airways hyperresponsiveness in a murine model of allergic airways inflammation. These findings suggest that 2-aminoimidazole amino acids represent new leads for the development of arginase inhibitors with promising pharmacological profiles.


    Organizational Affiliation

    Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Arginase-1
A, B
322Homo sapiensMutation(s): 0 
Gene Names: ARG1
EC: 3.5.3.1
Find proteins for P05089 (Homo sapiens)
Go to Gene View: ARG1
Go to UniProtKB:  P05089
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
A, B
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
Z70
Query on Z70

Download SDF File 
Download CCD File 
A, B
(2S)-2-amino-4-(2-amino-1H-imidazol-5-yl)butanoic acid
2-aminohomohistidine
C7 H12 N4 O2
FXIIKDXCDODGRI-YFKPBYRVSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
Z70Ki: 3000000 nM (100) BINDINGDB
Z70Ki: 3000000 nM BINDINGMOAD
Z70Ki: 3000000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.190 
  • R-Value Work: 0.141 
  • Space Group: P 3
Unit Cell:
Length (Å)Angle (°)
a = 90.660α = 90.00
b = 90.660β = 90.00
c = 69.707γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
CNSrefinement
ADSCdata collection
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance