Notch ligands Jag1 and Dll4 and their effector Ephb2 are required in sinus venosus endocardium for primitive coronary vasculature formation and later for arterial differentiation and maturation of coronary endothelium.
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.
Close evolutionary relationship between eukaryotic F-actin and crenarchaeal crenactin protein is supported by a near-atomic cryoEM structure of double helical filaments, that are inhibited by arcadin-2 through binding to crenactin's hydrophobic groove.
Synthetic single domain antibody libraries and a binder selection cascade encompassing ribosome and phage display enable the selection of conformation-specific binders against previously intractable membrane proteins within three weeks.
Analysis of embryonic mouse diaphragm reveals muscle and nerve left–right asymmetries set by a Nodal-dependent genetic cascade, which imprints different molecular signatures to left and right motoneurons that shape their innervation pattern.
The rapid killing of macrophages by Mycobacterium tuberculosis aggregates, and the subsequent proliferation of the bacteria inside the dead cell, leads to a cell death cascade and explains the coupling of necrosis and pathogen growth observed in active disease.