| phosphonate monoester hydrolase | <enzyme> Hydrolyzes glyceryl glyphosate to glyphosate; isolated from burkholderia caryophilli; genbank u44852 Registry number: EC 3.1.- Synonym: peh enzyme, glyceryl glyphosate hydrolase (26 Jun 1999) |
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| phosphonecrosis | Necrosis of the osseous tissue of the jaw, as a result of poisoning by inhalation of phosphorus fumes, occurring especially in persons who work with the element. Origin: phosphorus + G. Nekrosis, death (necrosis) (05 Mar 2000) |
| phosphonic | <chemistry> Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical, and analogous to the sulphonic acid. Origin: Phosphoric + sulphonic. Source: Websters Dictionary (01 Mar 1998) |
| phosphonic acids | Inorganic or organic derivatives of phosphonic acid with the general formula rop(oh)2. This includes phosphonates and phosphonic acid esters. The tautomeric form of this compound (p(oh)3) = phosphorous acids. (12 Dec 1998) |
| phosphonium | <chemistry> The hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine. Origin: Phosphorus + ammonium. Source: Websters Dictionary (01 Mar 1998) |
| phosphonoacetate hydrolase | <enzyme> A zinc-dependent carbon-phosphorus bond cleavage enzyme from pseudomonas fluorescens; n-terminal amino acid sequence given in first source Registry number: EC 3.11.1.- Synonym: phna gene product (26 Jun 1999) |
| phosphonoacetic acid | <chemical> (carboxymethyl)phosphonic acid. A simple organophosphorus compound that inhibits DNA polymerase, especially in viruses and is used as antiviral agent. Pharmacological action: antiviral agents, reverse transcriptase inhibitors. Chemical name: Acetic acid, phosphono- (12 Dec 1998) |
| phosphonylated acetylcholinesterase | <enzyme> Derivative of acetylcholinesterase (EC 3.1.1.7) Registry number: EC 3.1.1.- (26 Jun 1999) |
| phosphopenia | Low serum phosphate levels. Synonym: phosphorpenia. Origin: phospho-+ G. Penia, poverty (05 Mar 2000) |
| phosphopentose epimerase | <enzyme> An enzyme that catalyses the reversible epimerization of a number of phosphorylated, five-carbon sugars; most notably ribulose 5-phosphate to xylulose 5-phosphate in the pentose phosphate pathway. (05 Mar 2000) |
| phosphopentose isomerase | <enzyme> An enzyme catalyzing interconversion of d-ribose 5-phosphate and d-ribulose 5-phosphate; of importance in ribose metabolism and in the pentose phosphate pathway. Synonym: phosphopentose isomerase, phosphoriboisomerase. (05 Mar 2000) |
| phosphophorin | A protein (MW 155,000) found in dentin that is believed to have a role in mineralization. (05 Mar 2000) |
| phosphoprotein | <protein> Proteins that contain phosphate groups esterified to serine, threonine or tyrosine (s, T or Y). The phosphate group usually regulates protein function. (18 Nov 1997) |
| phosphoprotein phosphatase | <enzyme> A group of enzymes removing the serine- or threonine-bound phosphate groups from a wide range of phosphoproteins, including a number of enzymes which have been phosphorylated under the action of a kinase. (enzyme nomenclature, 1992) Chemical name: Phosphoprotein phosphohydrolase Registry number: EC 3.1.3.16 (12 Dec 1998) |
| phosphopyruvate hydratase | <enzyme> An enzyme of the lyase class that catalyses the dehydration of 2-phosphoglycerate to form phosphoenolpyruvate. Chemical name: 2-Phospho-D-glycerate hydro-lyase Registry number: EC 4.2.1.11 (12 Dec 1998) |