Sensory neurons in the olfactory system develop from two different regions of the ectoderm, the olfactory placode and the cranial neural crest, whereas sensory neurons within the eye and ear develop from just one region.
New experiments and theory reveal how the ability to see image details depends upon photoreceptor function and eye movements, and how fruit flies (Drosophila) see spatial details beyond the optical limit of their compound eyes.
Pathogenic LRRK2kinase requires Rab10 and RILPL1 to block primary cilia formation, shortening cilia on cholinergic neurons needed for a hedgehog driven circuit that supports dopaminergic neurons in mouse brain.
Paracellular, trans-tight junction channels, which communicate between two extracellular compartments without crossing the plasma membrane, are a new class of ion channel with unitary behaviors similar to traditional transmembrane channels.
The polarity protein crumbs controls apical secretion and the architecture of the apical domain by modulating PI(4,5)P2 levels and the organization of apical Rab6-, Rab11-, and Rab30-dependent trafficking.