Transport of molecules within a cell and out of the cell requires a complex endomembrane system. Endocytosis occurs when the cell membrane engulfs particles (dark blue) outside the cell ...

A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment.

This takes place when molecules diffuse across the cell membrane by travelling through specific transport proteins. It occurs down a concentration gradient - molecules move from an area of high to ...

Their ports of entry are sophisticated transport channels embedded in a cell's protective membrane. Regulating what kinds of cargo can pass through the borderlands formed by the cell's two-layer ...

The findings lead to a deeper understanding of how membrane ... cells are highly dynamic mosaic-fluid structures that undergo constant reshaping. The endosomal sorting complex required for ...

"The directed transport of large membrane vesicles is otherwise only found in higher cells, where complex motor proteins perform this task. To discover that small bacterial proteins are capable of ...