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 
  • R-Value Observed: 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

  • DOI: 10.1016/s1074-5521(03)00075-9
  • Primary Citation of Related Structures:  
    1OSF

  • 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-desme ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
heat shock 90kDa protein 1, alpha; heat shock 90kD protein 1, alpha A215Homo sapiensMutation(s): 0 
Gene Names: HSP90AA1HSP90AHSPC1HSPCA
Find proteins for P07900 (Homo sapiens)
Explore P07900 
Go to UniProtKB:  P07900
NIH Common Fund Data Resources
PHAROS:  P07900
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
KOS
Query on KOS

Download Ideal Coordinates CCD File 
A
17-DESMETHOXY-17-N,N-DIMETHYLAMINOETHYLAMINO-GELDANAMYCIN
C32 H48 N4 O8
KUFRQPKVAWMTJO-LMZWQJSESA-N
 Ligand Interaction
MPD
Query on MPD

Download Ideal Coordinates CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
ACY
Query on ACY

Download Ideal Coordinates CCD File 
A
ACETIC ACID
C2 H4 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
KOSIC50:  930   nM  BindingDB
KOSIC50:  24   nM  BindingDB
KOSIC50:  100   nM  BindingDB
KOSIC50:  1410   nM  BindingDB
KOSIC50:  90   nM  BindingDB
KOSIC50:  4.5   nM  BindingDB
KOSIC50:  18   nM  BindingDB
KOSEC50:  7.900000095367432   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.71α = 90
b = 41.68β = 102.81
c = 55.98γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
CNSrefinement
CCP4data scaling
CNSphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

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