4l59
Crystal structure of the 3-MBT repeat domain of L3MBTL3 and UNC2533 complexCrystal structure of the 3-MBT repeat domain of L3MBTL3 and UNC2533 complex
Structural highlights
FunctionLMBL3_HUMAN Putative Polycomb group (PcG) protein. PcG proteins maintain the transcriptionally repressive state of genes, probably via a modification of chromatin, rendering it heritably changed in its expressibility. Required for normal maturation of myeloid progenitor cells (By similarity). Publication Abstract from PubMedWe recently reported the discovery of UNC1215, a potent and selective chemical probe for the L3MBTL3 methyllysine reader domain. In this article, we describe the development of structure-activity relationships (SAR) of a second series of potent L3MBTL3 antagonists which evolved from the structure of the chemical probe UNC1215. These compounds are selective for L3MBTL3 against a panel of methyllysine reader proteins, particularly the related MBT family proteins, L3MBTL1 and MBTD1. A co-crystal structure of L3MBTL3 and one of the most potent compounds suggests that the L3MBTL3 dimer rotates about the dimer interface to accommodate ligand binding. The structure-activity relationships of L3MBTL3 inhibitors: flexibility of the dimer interface.,Camerino MA, Zhong N, Dong A, Dickson BM, James LI, Baughman BM, Norris JL, Kireev DB, Janzen WP, Arrowsmith CH, Frye SV Medchemcomm. 2013 Nov;4(11):1501-1507. doi: 10.1039/C3MD00197K. PMID:24466405[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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