5AK2 | pdb_00005ak2

Oxyphenylpropenoic acids as Oral Selective Estrogen Receptor Down- Regulators.

• PDB DOI: https://doi.org/10.2210/pdb5AK2/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2015-02-27 Released: 2015-04-22 
• Deposition Author(s): Degorce, S., Bailey, A., Callis, R., De Savi, C., Ducray, R., Lamot, P., MacFaul, P., Maudet, M., Norman, R.A., Scott, J.S., Phillips, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.19 Å
• R-Value Free: 
  0.262 (Depositor), 0.272 (DCC) 
• R-Value Work: 
  0.212 (Depositor), 0.217 (DCC) 
• R-Value Observed: 
  0.214 (Depositor) 

Literature

Investigation of (E)-3-[4-(2-Oxo-3-Aryl-Chromen-4-Yl)Oxyphenyl]Acrylic Acids as Oral Selective Estrogen Receptor Down-Regulators.

Degorce, S.L., Bailey, A., Callis, R., De Savi, C., Ducray, R., Lamont, G., Macfaul, P., Maudet, M., Martin, S., Morgentin, R., Norman, R.A., Peru, A., Pink, J.H., Ple, P.A., Roberts, B., Scott, J.S.

(2015) J Med Chem 58: 3522

• PubMed: 25790336 
• DOI: https://doi.org/10.1021/acs.jmedchem.5b00066
• Primary Citation Related Structures: 
  5AK2


• PubMed Abstract: 
  

  A novel estrogen receptor down-regulator, 7-hydroxycoumarin (5, SS5020), has been reported with antitumor effects against chemically induced mammary tumors. Here, we report on our own investigation of 7-hydroxycoumarins as potential selective estrogen receptor down-regulators, which led us to the discovery of potent down-regulating antagonists, such as 33. Subsequent optimization and removal of the 7-hydroxy group led to coumarin 59, which had increased potency and improved rat bioavailability relative to SS5020.

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Organizational Affiliation: 
• †Oncology Innovative Medicines Unit, AstraZeneca, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom.
‡Oncology Innovative Medicines Unit, AstraZeneca, Centre de Recherches, Z.I. la Pompelle, BP1050, 51689 Reims Cedex 2, France.
§Discovery Sciences, AstraZeneca, Mereside, Alderley Park, Macclesfield, Cheshire SK10 4TG, United Kingdom.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 62.02 kDa 
• Atom Count: 3,593 
• Modeled Residue Count: 438 
• Deposited Residue Count: 536 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ESTROGEN RECEPTOR	A, B	268	Homo sapiens	Mutation(s): 4
UniProt & NIH Common Fund Data Resources
Find proteins for P03372 (Homo sapiens) Explore P03372  Go to UniProtKB:  P03372
PHAROS:  P03372 GTEx:  ENSG00000091831

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
85Z	C [auth A], D [auth B]	(E)-3-[4-[[3-(4-fluoranyl-2-methyl-phenyl)-7-oxidanyl-2-oxidanylidene-chromen-4-yl]methyl]phenyl]prop-2-enoic acid C26 H19 F O5 OESYVSZPQCBFQS-IZZDOVSWSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.19 Å
• R-Value Free:  0.262 (Depositor), 0.272 (DCC) 
• R-Value Work:  0.212 (Depositor), 0.217 (DCC) 
• R-Value Observed: 0.214 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 106.07	α = 90
b = 51.29	β = 91.45
c = 83.31	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-04-22 
Deposition Author(s): Degorce, S., Bailey, A., Callis, R., De Savi, C., Ducray, R., Lamot, P., MacFaul, P., Maudet, M., Norman, R.A., Scott, J.S., Phillips, C.

Revision History  

• Version 1.0: 2015-04-22
  Type: Initial release
  
• Version 1.1: 2015-05-13
  Changes: Database references
• Version 1.2: 2018-04-25
  Changes: Data collection
• Version 1.3: 2024-05-08
  Changes: Data collection, Database references, Derived calculations, Other