1OSF

Human Hsp90 in complex with 17-desmethoxy-17-N,N-Dimethylaminoethylamino-Geldanamycin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure and Molecular Modeling of 17-DMAG in Complex with Human Hsp90

Jez, J.M.Chen, J.C.Rastelli, G.Stroud, R.M.Santi, D.V.

(2003) Chem.Biol. 10: 361-368


  • PubMed Abstract: 
  • Hsp90 is an attractive chemotherapeutic target because it chaperones the folding of proteins found in multiple signal transduction pathways. We describe the 1.75 A resolution crystal structure of human Hsp90 alpha (residues 9-236) complexed with 17-d ...

    Hsp90 is an attractive chemotherapeutic target because it chaperones the folding of proteins found in multiple signal transduction pathways. We describe the 1.75 A resolution crystal structure of human Hsp90 alpha (residues 9-236) complexed with 17-desmethoxy-17-N,N-dimethylaminoethylamino-geldanamycin (17-DMAG). The structure revealed an altered set of interactions between the 17-substituent and the protein compared to geldanamycin and the 17-dimethylaminoethyl moiety pointing into solvent, but otherwise was similar to that reported for the complex with geldanamycin. Targeted molecular dynamics simulations and energetic analysis indicate that geldanamycin undergoes two major conformational changes when it binds Hsp90, with the key step of the conversion being the trans to cis conformational change of the macrocycle amide bond. We speculate that 17-DMAG analogs constrained to a cis-amide in the ground state could provide a significant increase in affinity for Hsp90.


    Organizational Affiliation

    Kosan Biosciences, Inc., 3832 Bay Center Place, Hayward, CA 94545, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
heat shock 90kDa protein 1, alpha; heat shock 90kD protein 1, alpha
A
215Homo sapiensMutation(s): 0 
Gene Names: HSP90AA1 (HSP90A, HSPC1, HSPCA)
Find proteins for P07900 (Homo sapiens)
Go to Gene View: HSP90AA1
Go to UniProtKB:  P07900
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KOS
Query on KOS

Download SDF File 
Download CCD File 
A
17-DESMETHOXY-17-N,N-DIMETHYLAMINOETHYLAMINO-GELDANAMYCIN
17-DMAG
C32 H48 N4 O8
KUFRQPKVAWMTJO-LMZWQJSESA-N
 Ligand Interaction
ACY
Query on ACY

Download SDF File 
Download CCD File 
A
ACETIC ACID
C2 H4 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-N
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
KOSIC50: 90 - 1410 nM (92) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.710α = 90.00
b = 41.680β = 102.81
c = 55.980γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
CCP4data scaling
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-05-27
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance