The activation of thrombin is a critical reaction in the coagulation cascade, which functions to regulate hemostasis in the body.

In the cytoplasm, the encoded protein may function to regulate apoptosis.

The P21 protein is a cyclin dependent kinase inhibitor which functions to regulate the cell cycles progress in the G1 phase.

Albumin is the main protein in plasma, and it functions to regulate the colloidal osmotic pressure of blood.

UTF1 protein is localized to the cell nucleus, where it functions to regulate the pluripotent chromatin state.

The refractory period of the AV node is increased, so cardiac glycosides also function to regulate heart rate.

MicroRNAs function to regulate the expression levels of other genes by several mechanisms.

They are specialized smooth muscle cells that function to regulate blood flow through the capillaries, usually divided into two types, each having a very distinct function and location:

These proteins appear to be inactive proteinase inhibitors and may function during pregnancy to regulate immune function or participate in transplacental transport.

It functions to regulate appetite, sleep, memory and learning, temperature, mood, behaviour, muscle contraction, and function of the cardiovascular system and endocrine system.