1H1B

Crystal structure of human neutrophil elastase complexed with an inhibitor (GW475151)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Discovery of Further Pyrrolidine Trans-Lactams as Inhibitors of Human Neutrophil Elastase (Hne) with Potential as Development Candidates and the Crystal Structure of Hne Complexed with an Inhibitor (Gw475151)

Macdonald, S.J.F.Dowle, M.D.Harrison, L.A.Clarke, G.D.E.Inglis, G.G.A.Johnson, M.R.Shah, P.Smith, R.A.Amour, A.Fleetwood, G.Humphreys, D.C.Molloy, C.R.Dixon, M.Godward, R.E.Wonacott, A.J.Singh, O.M.P.Hodgson, S.T.Hardy, G.W.

(2002) J.Med.Chem. 45: 3878


  • PubMed Abstract: 
  • Described herein is a modern approach to the rapid preparation and evaluation of compounds as potential back-up drug candidates. GW311616A, 1, a derivative of pyrrolidine trans-lactams, has previously been described as a potent, orally active inhibit ...

    Described herein is a modern approach to the rapid preparation and evaluation of compounds as potential back-up drug candidates. GW311616A, 1, a derivative of pyrrolidine trans-lactams, has previously been described as a potent, orally active inhibitor of human neutrophil elastase (HNE) for the treatment of respiratory disease. These properties made it a suitable candidate for development. Described here is the discovery of three further derivatives of pyrrolidine trans-lactams, which fulfill the criteria required for back-up candidates 28, 29, and 32. These include increased activity in inhibiting HNE in human whole blood (HWB) and comparable pharmacokinetic properties, in particular clearance, in two species. To provide a rapid assessment of clearance, cassette dosing in dog was used. Modern array techniques, including the synthesis of mixtures, were used to synthesize compounds rapidly. Having selected three potential compounds as back-up candidates, they were prepared as single enantiomers and profiled in in vitro and in vivo assays and evaluated pharmacokinetically in rat and dog. These compounds are highly potent and selective HNE inhibitors, with a prolonged pharmacodynamic action. Pharmacokinetically, these compounds are comparable with 1 while they are more potent in HWB. Compound 28, however, has a higher clearance. One of these compounds, 32, was cocrystallized with HNE, and features of this structure are described and compared with the cocrystal structure of 1 in porcine pancreatic elastase.


    Organizational Affiliation

    Medicinal Chemistry 1, In Vitro Pharmacology, Systems Research, Respiratory Systems, Stevenage CEDD DMPK, United Kingdom. sjfm5947@gsk.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LEUKOCYTE ELASTASE
A, B
218Homo sapiensMutation(s): 0 
Gene Names: ELANE (ELA2)
EC: 3.4.21.37
Find proteins for P08246 (Homo sapiens)
Go to Gene View: ELANE
Go to UniProtKB:  P08246
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FUC
Query on FUC

Download SDF File 
Download CCD File 
A, B
ALPHA-L-FUCOSE
C6 H12 O5
SHZGCJCMOBCMKK-SXUWKVJYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
151
Query on 151

Download SDF File 
Download CCD File 
A, B
(2S)-3-METHYL-2-((2R,3S)-3-[(METHYLSULFONYL)AMINO]-1-{[2-(PYRROLIDIN-1-YLMETHYL)-1,3-OXAZOL-4-YL]CARBONYL}PYRROLIDIN-2-YL)BUTANOIC ACID
C19 H30 N4 O6 S
PWBJTGRBTWYVSH-XOKHGSTOSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
151Ki: 0.16 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.251 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 68.880α = 90.00
b = 68.880β = 90.00
c = 241.150γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
AMoREphasing
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2002-08-29
    Type: Initial release
  • Version 1.1: 2011-09-14
    Type: Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance