Crystal Structure of Hsp90-alpha N-domain Bound to the Inhibitor NVP-HSP990

Experimental Data Snapshot

  • Resolution: 1.55 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 

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This is version 1.4 of the entry. See complete history


Design, Structure-Activity Relationship, and in Vivo Characterization of the Development Candidate NVP-HSP990.

McBride, C.M.Levine, B.Xia, Y.Bellamacina, C.Machajewski, T.Gao, Z.Renhowe, P.Antonios-McCrea, W.Barsanti, P.Brinner, K.Costales, A.Doughan, B.Lin, X.Louie, A.McKenna, M.Mendenhall, K.Poon, D.Rico, A.Wang, M.Williams, T.E.Abrams, T.Fong, S.Hendrickson, T.Lei, D.Lin, J.Menezes, D.Pryer, N.Taverna, P.Xu, Y.Zhou, Y.Shafer, C.M.

(2014) J Med Chem 57: 9124-9129

  • DOI: https://doi.org/10.1021/jm501107q
  • Primary Citation of Related Structures:  
    4U93, 4W7T

  • PubMed Abstract: 

    Utilizing structure-based drug design, a novel dihydropyridopyrimidinone series which exhibited potent Hsp90 inhibition, good pharmacokinetics upon oral administration, and an excellent pharmacokinetic/pharmacodynamic relationship in vivo was developed from a commercial hit. The exploration of this series led to the selection of NVP-HSP990 as a development candidate.

  • Organizational Affiliation

    Global Discovery Chemistry/Oncology & Exploratory Chemistry, Novartis Institutes for Biomedical Research , 5300 Chiron Way, Emeryville, California 94608, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Heat shock protein HSP 90-alpha236Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P07900 (Homo sapiens)
Explore P07900 
Go to UniProtKB:  P07900
PHAROS:  P07900
GTEx:  ENSG00000080824 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP07900
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 990

Download Ideal Coordinates CCD File 
B [auth A](7R)-2-amino-7-[4-fluoro-2-(6-methoxypyridin-2-yl)phenyl]-4-methyl-7,8-dihydropyrido[4,3-d]pyrimidin-5(6H)-one
C20 H18 F N5 O2
Binding Affinity Annotations 
IDSourceBinding Affinity
990 BindingDB:  4U93 IC50: 13 (nM) from 1 assay(s)
Binding MOAD:  4U93 IC50: 13 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 1.55 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.726α = 90
b = 99.237β = 90
c = 91.561γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-19
    Type: Initial release
  • Version 1.1: 2014-11-26
    Changes: Database references
  • Version 1.2: 2016-07-20
    Changes: Data collection
  • Version 1.3: 2017-11-22
    Changes: Derived calculations, Refinement description
  • Version 1.4: 2023-12-27
    Changes: Data collection, Database references