The polyvalent sequestration ability of an economically important beetle.

Many specialized herbivorous insects sequester single classes of toxic secondary metabolites from their host plants as protection against natural enemies. If and how herbivores can use multiple classes of plant toxins across the large chemical diversity of plants for self-protection is unknown. We show that the polyphagous adults of the beetle Diabrotica virgifera are capable of selectively accumulating benzoxazinoids, cucurbitacins, and glucosinolates but not cyanogenic glycosides.

Redirecting the pioneering function of FOXA1 with covalent small molecules.

Pioneer transcription factors (TFs) bind to and open closed chromatin, facilitating engagement by other regulatory factors involved in gene activation or repression. Chemical probes are lacking for pioneer TFs, which has hindered their mechanistic investigation in cells. Here, we report the chemical proteomic discovery of electrophilic compounds that stereoselectively and site-specifically bind the pioneer TF forkhead box protein A1 (FOXA1) at a cysteine (C258) within the forkhead DNA-binding domain.

Fontan Conversion in an Adult With Hypoplastic Left Heart Syndrome: A 38-Year-Old Norwood Success.

A 38-year-old man with a functional single ventricle secondary to hypoplastic left heart syndrome presented with exertional fatigue. His last palliation was an intra-atrial conduit Fontan procedure. Comprehensive evaluation showed elevated liver enzyme values and a small, calcified conduit.

Functional Investigations of p53 Acetylation Enabled by Heterobifunctional Molecules.

Post-translational modifications (PTMs) dynamically regulate the critical stress response and tumor suppressive functions of p53. Among these, acetylation events mediated by multiple acetyltransferases lead to differential target gene activation and subsequent cell fate. However, our understanding of these events is incomplete due to, in part, the inability to selectively and dynamically control p53 acetylation.

The 4.2 ka event is not remarkable in the context of Holocene climate variability.

The "4.2 ka event" is a commonly described abrupt climate excursion that occurred about 4200 years ago. However, the extent to which this event is coherent across regional and larger scales is unclear.