This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
4qo4
From Proteopedia
co-crystal structure of MDM2 (17-111) with compound 16, {(3R,5R,6S)-5-(3-CHLOROPHENYL)-6-(4-CHLOROPHENYL)-1-[(1S)-1-(6-CYCLOPROPYLPYRIDIN-2-YL)PROPYL]-3-METHYL-2-OXOPIPERIDIN-3-YL}ACETIC ACID
Structural highlights
Disease[MDM2_HUMAN] Note=Seems to be amplified in certain tumors (including soft tissue sarcomas, osteosarcomas and gliomas). A higher frequency of splice variants lacking p53 binding domain sequences was found in late-stage and high-grade ovarian and bladder carcinomas. Four of the splice variants show loss of p53 binding. Function[MDM2_HUMAN] E3 ubiquitin-protein ligase that mediates ubiquitination of p53/TP53, leading to its degradation by the proteasome. Inhibits p53/TP53- and p73/TP73-mediated cell cycle arrest and apoptosis by binding its transcriptional activation domain. Also acts as an ubiquitin ligase E3 toward itself and ARRB1. Permits the nuclear export of p53/TP53. Promotes proteasome-dependent ubiquitin-independent degradation of retinoblastoma RB1 protein. Inhibits DAXX-mediated apoptosis by inducing its ubiquitination and degradation. Component of the TRIM28/KAP1-MDM2-p53/TP53 complex involved in stabilizing p53/TP53. Also component of the TRIM28/KAP1-ERBB4-MDM2 complex which links growth factor and DNA damage response pathways. Mediates ubiquitination and subsequent proteasome degradation of DYRK2 in nucleus. Ubiquitinates IGF1R and promotes it to proteasomal degradation.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] Publication Abstract from PubMedContinued optimization of the N-substituent in the piperidinone series provided potent piperidinone-pyridine inhibitors 6, 7, 14, and 15 with improved pharmacokinetic properties in rats. Reducing structure complexity of the N-alkyl substituent led to the discovery of 23, a potent and simplified inhibitor of MDM2. Compound 23 exhibits excellent pharmacokinetic properties and substantial in vivo antitumor activity in the SJSA-1 osteosarcoma xenograft mouse model. Discovery of Potent and Simplified Piperidinone-Based Inhibitors of the MDM2-p53 Interaction.,Yu M, Wang Y, Zhu J, Bartberger MD, Canon J, Chen A, Chow D, Eksterowicz J, Fox B, Fu J, Gribble M, Huang X, Li Z, Liu JJ, Lo MC, McMinn D, Oliner JD, Osgood T, Rew Y, Saiki AY, Shaffer P, Yan X, Ye Q, Yu D, Zhao X, Zhou J, Olson SH, Medina JC, Sun D ACS Med Chem Lett. 2014 Jun 30;5(8):894-9. doi: 10.1021/ml500142b. eCollection, 2014 Aug 14. PMID:25147610[12] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
| ||||||||||||||||||||
