Researchers at New York University and the University of Chicago have developed artificial, fully synthetic cell-like structures that autonomously ingest, process, and push out material, recreating an ...

The alternative to active transport is passive transport, which uses kinetic energy only to move the molecules. Passive transport can only move molecules from a region of higher concentration to lower ...

New fundamental physics research provides insights on the process of diffusion in complex systems such as living organisms. This new theoretical framework has broad implications for active surfaces, ...

For decades it was assumed that protein channels and protein pumps fulfilled completely different functions and worked independently of each other. Researchers have now elucidated the transport path ...

The cytosolic free calcium concentration of higher plant cells is maintained at about 0.1 μM by the action of membrane calcium transporters. These act to remove calcium from the cytosol and expel it ...

Methotrexate and [3H]methotrexate were conjugated through a carbodiimide-catalyzed reaction to a 70,000 molecular weight poly(L-lysine) in molar ratios of approximately 13 to 1. The cellular uptake of ...