The ARMC5 gene provides instructions for making a protein about which little is known. It is found mainly in the fluid surrounding the cell nucleus (cytoplasm), and studies suggest that its function depends on interacting with other proteins. It is t READ MORE

The ARMS2 gene provides instructions for making a protein whose function is unknown. Studies suggest that the ARMS2 protein is found primarily in the placenta and in the specialized light-sensing tissue in the back of the eye (the retina). However, i READ MORE

The ARSA gene provides instructions for making the enzyme arylsulfatase A. This enzyme is located in cellular structures called lysosomes, which are the cell's recycling centers. Within lysosomes, arylsulfatase A helps process substances known as sul READ MORE

The ARSB gene provides instructions for producing an enzyme called arylsulfatase B, which is involved in the breakdown of large sugar molecules called glycosaminoglycans (GAGs). Specifically, arylsulfatase B removes a chemical group known as a sulfat READ MORE

The ARSL gene provides instructions for making an enzyme called arylsulfatase L. This enzyme is part of a group known as sulfatases, which are enzymes that help process molecules that contain chemical groups known as sulfates. Sulfatases play importa READ MORE

The ARX gene provides instructions for producing a protein that regulates the activity of other genes. On the basis of this action, the ARX protein is called a transcription factor. The ARX gene is part of a larger family of homeobox genes, which act READ MORE

The ASAH1 gene provides instructions for making an enzyme called acid ceramidase. This enzyme is found in lysosomes, which are cell compartments that digest and recycle materials. Within lysosomes, acid ceramidase breaks down fats (lipids) called cer READ MORE

The ASH1L gene, also known as KMT2H , provides instructions for making an enzyme, called lysine-specific methyltransferase 2H, that is found in many organs and tissues of the body. Lysine-specific methyltransferase 2H functions as a histone methyltra READ MORE

The ASL gene provides instructions for making the enzyme argininosuccinate lyase. This enzyme primarily participates in the urea cycle, a series of reactions that occur in liver cells. The urea cycle processes excess nitrogen, generated when protein READ MORE

The ASNS gene provides instructions for making an enzyme called asparagine synthetase. This enzyme is found in cells throughout the body, where it converts the protein building block (amino acid) aspartic acid to the amino acid asparagine. Another am READ MORE

The ASPA gene provides instructions for making an enzyme called aspartoacylase. In the brain, this enzyme breaks down a compound called N-acetyl-L-aspartic acid (NAA) into aspartic acid (an amino acid that is a building block of many proteins) and an READ MORE

The ASPM gene provides instructions for making a protein that is involved in cell division. This protein is found in cells and tissues throughout the body; however, it appears to be particularly important for the division of cells in the developing b READ MORE