4HVA

Mechanistic and Structural Understanding of Uncompetitive Inhibitors of Caspase-6


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.074 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.172 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Mechanistic and structural understanding of uncompetitive inhibitors of caspase-6.

Heise, C.E.Murray, J.Augustyn, K.E.Bravo, B.Chugha, P.Cohen, F.Giannetti, A.M.Gibbons, P.Hannoush, R.N.Hearn, B.R.Jaishankar, P.Ly, C.Q.Shah, K.Stanger, K.Steffek, M.Tang, Y.Zhao, X.Lewcock, J.W.Renslo, A.R.Flygare, J.Arkin, M.R.

(2012) Plos One 7: e50864-e50864

  • DOI: 10.1371/journal.pone.0050864

  • PubMed Abstract: 
  • Inhibition of caspase-6 is a potential therapeutic strategy for some neurodegenerative diseases, but it has been difficult to develop selective inhibitors against caspases. We report the discovery and characterization of a potent inhibitor of caspase ...

    Inhibition of caspase-6 is a potential therapeutic strategy for some neurodegenerative diseases, but it has been difficult to develop selective inhibitors against caspases. We report the discovery and characterization of a potent inhibitor of caspase-6 that acts by an uncompetitive binding mode that is an unprecedented mechanism of inhibition against this target class. Biochemical assays demonstrate that, while exquisitely selective for caspase-6 over caspase-3 and -7, the compound's inhibitory activity is also dependent on the amino acid sequence and P1' character of the peptide substrate. The crystal structure of the ternary complex of caspase-6, substrate-mimetic and an 11 nM inhibitor reveals the molecular basis of inhibition. The general strategy to develop uncompetitive inhibitors together with the unique mechanism described herein provides a rationale for engineering caspase selectivity.


    Organizational Affiliation

    Department of Biochemical and Cellular Pharmacology, Genentech, Inc, South San Francisco, California, United States of America. heise.christopher@gene.com




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Caspase-6
A, B
265Homo sapiensMutation(s): 0 
Gene Names: CASP6 (MCH2)
EC: 3.4.22.59
Find proteins for P55212 (Homo sapiens)
Go to Gene View: CASP6
Go to UniProtKB:  P55212
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
VEID Inhibitor
C, D
5N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4HV
Query on 4HV

Download SDF File 
Download CCD File 
A, B
N-[(2R)-1-(3-cyanophenyl)-3-hydroxypropan-2-yl]-5-(3,4-dimethoxyphenyl)furan-3-carboxamide
C23 H22 N2 O5
WYLRQKDQMNFNCH-LJQANCHMSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4HVIC50: 11 nM BINDINGMOAD
4HVKd: 1300 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.074 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.172 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 55.988α = 90.00
b = 62.647β = 104.79
c = 76.298γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
XSCALEdata scaling
PHENIXrefinement
HKL-2000data collection
PDB_EXTRACTdata extraction
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-20
    Type: Initial release