The PYCR1 gene provides instructions for making a protein that is located in the energy-producing structures of cells, called mitochondria. The PYCR1 protein appears to be important for the function of mitochondria and it helps in the formation (synt READ MORE

The PYGL gene provides instructions for making an enzyme called liver glycogen phosphorylase. This enzyme breaks down a complex sugar called glycogen. Liver glycogen phosphorylase is one of three related enzymes that break down glycogen in cells; the READ MORE

The PYGM gene provides instructions for making an enzyme called myophosphorylase. This enzyme breaks down a complex sugar called glycogen. Myophosphorylase is one of three related enzymes called glycogen phosphorylases that break down glycogen in cel READ MORE

The QDPR gene provides instructions for making an enzyme called quinoid dihydropteridine reductase. This enzyme helps carry out one step in the chemical pathway that recycles a molecule called tetrahydrobiopterin (BH4). Tetrahydrobiopterin plays a cr READ MORE

The RAB18 gene provides instructions for producing the RAB18 protein, which functions as a GTPase. Often referred to as molecular switches, GTPases can be turned on and off. They are turned on (active) when they are attached (bound) to a molecule cal READ MORE

The RAB23 gene provides instructions for making a protein that is involved in a process called vesicle trafficking, which moves proteins and other molecules within cells in sac-like structures called vesicles. A vesicle forms when the cell membrane f READ MORE

The RAB27A gene provides instructions for making a protein that is involved in a process called vesicle trafficking, which moves proteins and other molecules within cells in sac-like structures called vesicles. Although the Rab27a protein is found in READ MORE

The RAB3GAP1 gene provides instructions for making a protein that helps regulate the activity of specialized proteins called GTPases, which control a variety of functions in cells. To perform its function, the RAB3GAP1 protein interacts with another READ MORE

The RAB3GAP2 gene provides instructions for making a protein that helps regulate the activity of specialized proteins called GTPases, which control a variety of functions in cells. To perform its function, the RAB3GAP2 protein interacts with another READ MORE

The RACGAP1 gene provides instructions for making the Rac GTPase-activating protein 1. This protein is one of many proteins known as Rho GTPase activating proteins (GAPs). GAPs regulate the activity of proteins called GTPases, which play an important READ MORE

The RAD21 gene provides instructions for making a protein that is involved in regulating the structure and organization of chromosomes during cell division. Before cells divide, they must copy all of their chromosomes. The copied DNA from each chromo READ MORE

The RAD51 gene provides instructions for making a protein that is essential for repairing damaged DNA. Exposure to radiation, ultraviolet light, or certain chemicals can cause breaks in DNA. Breaks also occur when chromosomes exchange genetic materia READ MORE