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Fusion of Cas9 with m6A writers METTL3 and METTL14 or eraser ALKBH5 enables site-specific writing or erasing of RNA m6A modifications in mammalian cells and investigation of individual m6A modification-mediated function.
A bacterial 2-hydroxyacyl-CoA lyase catalyzes ligation of carbonyl-containing molecules of different chain lengths with formyl-CoA to produce elongated 2-hydroxyacyl-CoAs, enabling a one-carbon bioconversion pathway with formaldehyde as a substrate.
Using a thiol-reactive probe, chemoproteomic profiling of cysteine targets of itaconate reveals the covalent modification of glycolytic enzymes, impairing glycolytic flux and contributing to attenuation of the inflammatory response in macrophages.
Male C. elegans excrete an N-acylated glutamine that acts via evolutionarily conserved nuclear hormone receptor and chemosensory pathways to counteract dauer diapause and accelerate sexual maturation of hermaphrodites, at the cost of shortening hermaphrodite lifespan.
The C termini sequences recognized by E3 ubiquitin ligase CHIP were identified via a peptide library screen. Caspase cleavage caused the exposure of aspartic acid at the C termini of Tau and caspase-6 that made them accessible to CHIP.
Use of DNA-origami nanostructures to study lipid transfer between closely apposed membrane bilayers supports a model where phospholipids are transferred by extended synaptotagmin 1 between the endoplasmic reticulum and plasma membrane through a shuttle mechanism.
Characterization of multiple enzymes involves in biosynthesis of the aminocyclitol antibiotic pactamycin reveals a key step involving the glycosylation of an acyl carrier protein-bound intermediate by the promiscuous glycosyltransferase PtmJ.
The TransATor application bioinformatically predicts chemical structures for the products of trans-acyltransferase polyketide synthases, enabling the characterization of new polyketide natural products from (unusual) bacterial sources.
Elucidation of a multi-enzyme pathway for degradation of the polysaccharide ulvan by Formosa agariphila provides tools to use ulvan biomass from marine algal blooms as feedstock for renewable sources of carbohydrates.
A chemical probe BI-9321 for the PWWP1 domain of NSD3 and its inactive analog were identified. BI-9321 binds to the methyl-lysine binding site, reduces the association of NSD3 with chromatin and inhibits proliferation of acute myeloid leukemia cells.
A covalent ligand that targets C277 of ATP6V1A was identified resulting in enhanced v-ATPase activity, inhibition of mTORC1 signaling, increased lysosomal acidification, activation of autophagy and clearance of toxic protein aggregates.
The cholesterol-transfer protein GRAMD1A is identified as the target of the autophagy inhibitors autogramin-1 and autogramin-2. GRAMD1A is found to be required for autophagosome biogenesis.
The natural product nimbolide covalently reacts with a functional cysteine of the E3 ubiquitin ligase RNF114, resulting in impaired substrate recognition and degradation, enabling the use of nimbolide for targeted protein degradation.
Optimization of triacylglycerol production in the oleaginous bacterium Rhodococcus opacus followed by pathway engineering enables the enhanced production of free fatty acids, fatty acid ethyl esters and long-chain hydrocarbons from glucose.
A chemical proteomics strategy identifies DCAF16 as a potential ubiquitin ligase recruiter for cysteine-directed electrophilic PROTACs to promote the degradation of nuclear proteins.
A structure-based design allows the development of a potent PROTAC to degrade BAF ATPase subunits SMARCA2 and SMARCA4 via recruitment of E3 ubiquitin ligase VHL and induce cancer cell death.
Mitochondrial energy metabolism regulates proteotoxic stress tolerance, exposing a newly discovered sensitivity to the small molecule elesclomol, which induces FDX1-mediated, copper-dependent cell death.
Synthetic gene circuits regulated by small molecules have been used to fine-tune glycosyltransferase expression in CHO cells, providing a method to produce therapeutic monoclonal antibodies with precise glycosylation states.
Rewiring of bacterial two-component systems (TCSs) was achieved by DNA-binding domain swapping of the two largest response regulator families, which enables cross-species porting and provides a tool for identifying ligands for uncharacterized TCSs.
Structural analysis of uracil DNA glycosylase reveals that its high affinity with DNA substrates derives from a stable intermediate that is formed by conservative H109 in a protruding loop covalently binding to the abasic site after uracil is excised.