Next, the researchers used two biologically active peptides ... translocate across the membrane, demonstrating protein transport. Peptides containing up to 50 amino acids could be inserted ...

small molecules and proteins. Transporters can act by either facilitated diffusion or active transport. Nicotinamide is an NAD+ precursor with crucial roles in cellular respiration and energy ...

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 ...

An important cell membrane protein is found to have a role in regulating ion transport in plant cells ... of the crops themselves is a highly active area of research. The team observed that ...