The AMN gene provides instructions for making a protein called amnionless that spans the membranes of cells in the intestines and the kidneys. Amnionless helps the body absorb vitamin B12 (also called cobalamin) from food, which is important because READ MORE

The AMPD1 gene provides instructions for producing an enzyme called adenosine monophosphate (AMP) deaminase. This enzyme is found in the muscles used for movement (skeletal muscles), where it plays a role in producing energy. Specifically, during phy READ MORE

The AMT gene provides instructions for making an enzyme called aminomethyltransferase. This protein is one of four enzymes that work together in a group called the glycine cleavage system. Within cells, this system is active in specialized energy-pro READ MORE

The ANK1 gene provides instruction for making a protein called ankyrin-1. This protein is primarily active (expressed) in red blood cells, but it is also found in muscle and brain cells. In red blood cells, ankyrin-1 is located at the cell membrane, READ MORE

The ANK2 gene provides instructions for making a protein called ankyrin-B. Ankyrin-B is part of a family of ankyrin proteins, which interact with many other types of proteins in cells throughout the body. Ankyrins help organize the cell's structural READ MORE

The ANKH gene provides instructions for making a protein that is involved in skeletal development. The ANKH protein plays a role in the development and function of cells that build bones (osteoblasts) and cells that break down bone (osteoclasts). Ost READ MORE

The ANKRD11 gene provides instructions for making a protein called ankyrin repeat domain 11 (ANKRD11). As its name suggests, this protein contains multiple regions called ankyrin domains; proteins with these domains help other proteins interact with READ MORE

The ANO5 gene provides instructions for making a protein called anoctamin-5. While the specific function of this protein is not well understood, it belongs to a family of proteins, called anoctamins, that act as chloride channels. Chloride channels, READ MORE

The ANOS1 gene, also known as KAL1 , provides instructions for making a protein called anosmin-1. This protein is involved in development before birth. Anosmin-1 is found in the extracellular matrix, which is the intricate lattice of proteins and oth READ MORE

The ANTXR2 gene provides instructions for making a protein that is found at the surface of many types of cells. The ANTXR2 protein is believed to interact with components of the extracellular matrix, which is the lattice of proteins and other molecul READ MORE

The APC gene provides instructions for making the APC protein, which plays a critical role in several cellular processes. The APC protein acts as a tumor suppressor, which means that it keeps cells from growing and dividing too fast or in an uncontro READ MORE

The APOA1 gene provides instructions for making a protein called apolipoprotein A-I (apoA-I). ApoA-I is a component of high-density lipoprotein (HDL). HDL is a molecule that transports cholesterol and certain fats called phospholipids through the blo READ MORE