Abstract
BIX-01294 and its analogs were originally identified and subsequently designed as potent inhibitors against histone H3 lysine 9 (H3K9) methyltransferases G9a and G9a-like protein. Here, we show that BIX-01294 and its analog E67 can also inhibit H3K9 Jumonji demethylase KIAA1718 with half-maximal inhibitory concentrations in low micromolar range. Crystallographic analysis of KIAA1718 Jumonji domain in complex with E67 indicated that the benzylated six-membered piperidine ring was disordered and exposed to solvent. Removing the moiety (generating compound E67-2) has no effect on the potency against KIAA1718 but, unexpectedly, lost inhibition against G9a-like protein by a factor of 1500. Furthermore, E67 and E67-2 have no effect on the activity against histone H3 lysine 4 (H3K4) demethylase JARID1C. Thus, our study provides a new avenue for designing and improving the potency and selectivity of inhibitors against H3K9 Jumonji demethylases over H3K9 methyltransferases and H3K4 demethylases.
Original language | English (US) |
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Pages (from-to) | 319-327 |
Number of pages | 9 |
Journal | Journal of Molecular Biology |
Volume | 416 |
Issue number | 3 |
DOIs | |
State | Published - Feb 24 2012 |
Externally published | Yes |
Keywords
- BIX analogs
- enzymatic inhibition
- epigenetics
- histone lysine demethylation
ASJC Scopus subject areas
- Structural Biology
- Molecular Biology