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An intrinsically disordered tug of war that fine-tunes acetylation

Acetylation of histones and transcriptional regulators modulates gene expression, but how acetyltransferases define target specificity remains puzzling. In Cell Reports, Gelder et al. have shown how intrinsically disordered regions of CBP temper each other to shape acetyltransferase activity.

Endocannabinoid modulation of a reciprocal fronto-coerulear connection in contextual discrimination

Locarno, Nava, Barsotti et al. define a fronto-coerulear anatomical-functional loop under endocannabinoid (eCB) negative feedback that regulates contextual discrimination. Prefrontal cortex (PFC) inputs drive locus coeruleus (LC) norepinephrine (NE) release to enhance cortical firing, while locally mobilized eCBs weaken PFC to LC synapses, constraining NE-dependent entrainment of PFC neuronal assemblies.

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