Progesterone receptor

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Revision as of 12:26, 18 January 2024 by Michal Harel (talk | contribs)
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Function

Progesterone receptor (PR) binds to DNA and inhibits transcription. It is nuclear receptor. The inhibition terminates when progesterone binds to PR. The ovarian steroid progesterone which is essential for breast development and reproductive behavior, is mediated by PR[1].

See also Intracellular receptors

Relevance

The response to hormone therapy in breast cancer correlates with PR. PR absence in breast tumor cells predicts resistance to hormone therapy [2]. Mometasone is a potent agonist of PR.

Structural highlights

The structure of the complex of the ligand-binding domain of PR with RU486 - an abortion-inducing drug - shows the ligand bound at a similar location to other agonists or partial agonists with a flexible loop of PR being a possible entry route to the [3]. Water molecules are shown as red spheres. (1a28).

Structure of human progesterone receptor ligand-binding domain complex with RU486 and sulfate (PDB entry 2w8y)

Drag the structure with the mouse to rotate

3D Structures of progesterone receptor3D Structures of progesterone receptor

Updated on 18-January-2024

ReferencesReferences

  1. Lange CA, Yee D. Progesterone and breast cancer. Womens Health (Lond). 2008 Mar;4(2):151-62. doi: 10.2217/17455057.4.2.151. PMID:19072517 doi:http://dx.doi.org/10.2217/17455057.4.2.151
  2. Cui X, Schiff R, Arpino G, Osborne CK, Lee AV. Biology of progesterone receptor loss in breast cancer and its implications for endocrine therapy. J Clin Oncol. 2005 Oct 20;23(30):7721-35. doi: 10.1200/JCO.2005.09.004. PMID:16234531 doi:http://dx.doi.org/10.1200/JCO.2005.09.004
  3. Raaijmakers HC, Versteegh JE, Uitdehaag JC. The X-ray structure of RU486 bound to the progesterone receptor in a destabilized agonistic conformation. J Biol Chem. 2009 Jul 17;284(29):19572-9. Epub 2009 Apr 16. PMID:19372222 doi:http://dx.doi.org/10.1074/jbc.M109.007872

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Michal Harel, Alexander Berchansky