5jct | pdb_00005jct
Crystal Structure of Human Pirin in complex with a Chemical Probe pyrrolidine 24
Structural highlights
Function[PIR_HUMAN] Possible transcriptional coregulator. May contribute to the regulation of cellular processes via its interaction with BCL3. May be required for efficient terminal myeloid maturation of hematopoietic cells. May play a role in the regulation of cell migration. May promote apoptosis when overexpressed. Has quercetin 2,3-dioxygenase activity (in vitro).[1] [2] [3] [4] Publication Abstract from PubMedPhenotypic screens, which focus on measuring and quantifying discrete cellular changes rather than affinity for individual recombinant proteins, have recently attracted renewed interest as an efficient strategy for drug discovery. In this article, we describe the discovery of a new chemical probe, bisamide (CCT251236), identified using an unbiased phenotypic screen to detect inhibitors of the HSF1 stress pathway. The chemical probe is orally bioavailable and displays efficacy in a human ovarian carcinoma xenograft model. By developing cell-based SAR and using chemical proteomics, we identified pirin as a high affinity molecular target, which was confirmed by SPR and crystallography. Discovery of a Chemical Probe Bisamide (CCT251236): An Orally Bioavailable Efficacious Pirin Ligand from a Heat Shock Transcription Factor 1 (HSF1) Phenotypic Screen.,Cheeseman MD, Chessum NE, Rye CS, Pasqua AE, Tucker MJ, Wilding B, Evans LE, Lepri S, Richards M, Sharp SY, Ali S, Rowlands M, O'Fee L, Miah A, Hayes A, Henley AT, Powers M, Te Poele R, De Billy E, Pellegrino L, Raynaud F, Burke R, van Montfort RL, Eccles SA, Workman P, Jones K J Med Chem. 2017 Jan 12;60(1):180-201. doi: 10.1021/acs.jmedchem.6b01055. Epub, 2016 Dec 22. PMID:28004573[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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