The crystal structures of the intracellular part of the plexin receptor in the active dimer form, and its complex with a key downstream signalling protein Rap, provide insights into how plexin initiates a signalling cascade involved in axon guidance.
A real-time, stopped-flow method, in combination with protein-induced fluorescence enhancement, Förster resonance energy transfer, and time-resolved fluorescence spectroscopy, reveals a kinetic framework for understanding Dicer as a complex molecular motor.
The high-resolution x-ray structure of an asymmetrical SeCitS dimer, present in the inward- and outward-facing state, provides a complete mechanism of substrate and ion translocation in a sodium-dependent symporter.
Loss miRNA maturation in proopiomelanocortin (POMC) neurons causes metabolic dysregulation and favors the differentiation of Pomc progenitors into neuropeptide Y neurons, a developmental process that appears to specifically involve miR-103/107.
Client protein-driven reversal of endoplasmic reticulum chaperone (BiP) mediated-repression is revealed as a principal component of the regulation of the unfolded protein response transducer IRE1 in cells.
Structure of the Mrp antiporter, an ancestor of respiratory complex I, suggests a mechanism of coupling between cation and proton translocation, applicable to a large family of related membrane proteins.