A bacterioopsin is a particular form of transmembrane protein.

The transmembrane protein channels that are specialized for the passage of water is aquaporin's. Osmosis is the diffusion of water down its concentration gradient.

For tissue that is found in the leaves, transmembrane protein is responsible for transporting carbohydrates from leaves to various parts of the plant . Sugars are taken up by the transmembrane protein with the help of companion cells.

A transmembrane protein spans this layer one or more times. The prefix "trans" means "between", hinting at the way this protein moves between the two membranes.

It is a protein that in humans is encoded by the FLRT2 gene and may function in cell adhesion and/or receptor signaling.