Specifically, proteins called transcription factors (TF) help control the rate at which a gene is transcribed.

The protein produced, called hypocretin or orexin, is responsible for controlling appetite and sleep patterns.

The hydrocaulus is usually surrounded by a sheath of chitin and proteins called the perisarc.

Mad cow is caused by an agent whose existence was largely undreamed of until a few years ago - an abnormal protein called a prion.

Pinoresinol biosynthesis involved a protein called a dirigent protein.

In order to enter the cells, the edema and lethal factors use another protein produced by B. anthracis called protective antigen.

But the research showed how a protein called TRIM21 attacks invaders of the cell which aren't antibodies.

For unknown reasons, a normal protein called a prion twists into an abnormal shape, usually in the brain.

The researchers propose placing hydramacin-1 and the proteins from the leech in a newly designated protein family called the macins.

By definition, a CDK binds a regulatory protein called a cyclin.