Ketan Mathavan/Sandbox 1

spinqualitylabelsall models Human mitochondrial RNA polymerase (3SPA) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

A bacterial chemotaxis receptor is an unusually long alpha-helical structure. The attractant molecule (the ligand) binds near the top of this picture and sends a signal across the membrane into the cell to control proteins that bind near the bottom. This is a model of the structure of the receptor based on experimental structures of pieces of related proteins.

Bacterial chemotaxis receptor

spinqualitylabelsall models Human mitochondrial RNA polymerase (3spa) Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

Ligand-binding domainLigand-binding domain

The spinning protein () ) is the ligand binding domain of the aspartate receptor with the aspartate ligand bound (LKT).

Molecular Playground banner: A receptor protein used by bacteria to "smell" their environment.