Category: P

An enzyme that catalyzes reconversion to the ribonucleotide stage of the purine bases, hypoxanthine and guanine. The deficiency of this enzyme is inherited as an X-linked trait.  

The induced luminescence that persists after cessation of the irradiation that caused it; the emission of light without appreciable heat. After being stimulated by radiation of shorter wavelengths, like electrons, ultraviolet light, or x-rays, a fascinating phenomenon of light emission persists for a duration exceeding 10‾⁸ seconds. This mesmerizing display is commonly referred to as…

Impregnated with phosphorus.  

A substance in radiographic intensifying screens, fluoroscopic image intensifies, or other image receptors that convert photons of energy into light, thereby amplifying the image. Any substance exhibiting the properties of phosphorescence, fluorescence, or luminescence.  

A deficiency of phosphorus in the body.  

An enzyme that catalyzes the hydrolysis of nucleotides to nucleosides and phosphoric acid.  

An autosomal recessive disorder in which a deficiency in phosphofructokinase results in muscular weakness, exercise intolerance, hemolysis, hyperuricemia, and myoglobinuria.  

Any agent that blocks phosphodiesterase, inhibiting the production of second messengers within cells, such as cyclic adenosine monophosphate or cyclic glucose monophosphate. Drugs that inhibit PDE include sildenafil, an agent used to treat erectile dysfunction, and other agents used as positive inotropes and vasodilators in heart failure.  

An enzyme that catalyzes the conversion of phosphocreatine to creatine and orthophosphate.  

A binary compound of phosphorus with an element or radical.