| phosphohexokinase | <enzyme> An enzyme that catalyses the conversion of a nucleotide triphosphate and a sugar phosphate to a nucleotide diphosphate and a sugar diphosphate. D-fructose 6-phosphate, d-tagatose 6-phosphate, and sedoheptulose 7-phosphate can act as acceptors; ATP, utp, ctp, and itp can act as donors. A deficiency of this enzyme is the cause of glycogen storage disease type vii. Chemical name: ATP:D-fructose-6-phosphate 6-phosphotransferase Registry number: EC 2.7.1.11 (12 Dec 1998) |
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| phosphohexomutase | <enzyme> An enzyme that catalyses the reversible interconversion of d-fructose 6-phosphate and d-glucose-6-phosphate; a part of glycolysis and gluconeogenesis; glucosephosphate isomerase deficiency is an inherited disorder resulting in liver glycogenesis and haemolytic anaemia. Synonym: hexosephosphate isomerase, phosphohexomutase, phosphohexose isomerase. (05 Mar 2000) |
| phosphohexose isomerase | <enzyme> An enzyme that catalyses the reversible interconversion of d-fructose 6-phosphate and d-glucose-6-phosphate; a part of glycolysis and gluconeogenesis; glucosephosphate isomerase deficiency is an inherited disorder resulting in liver glycogenesis and haemolytic anaemia. Synonym: hexosephosphate isomerase, phosphohexomutase, phosphohexose isomerase. (05 Mar 2000) |
| phosphohexose isomerase deficiency | <enzyme> An enzyme deficiency characterised by chronic nonspherocytic haemolytic anaemia; autosomal recessive inheritance. Synonym: phosphohexose isomerase deficiency. (05 Mar 2000) |
| phosphohydrolases | Phosphoric monoester hydrolases;enzymes (EC sub-subclass 3.1.3) cleaving phosphoric acid (as orthophosphate) from its esters; trivial names usually end in phosphate. (05 Mar 2000) |
| phosphoinositide | <biochemistry> A phosphatidic acid combined with inositol found in biomembranes and a precursor to certain cellular signals. Sometimes referred to as inositide. It is a very important minor phospholipid in eukaryotes, involved in signal transduction processes. Contains myo inositol linked through the 1 hydroxyl group to phosphatidic acid. The 4 phosphate (PIP) and 4, 5 bisphosphate derivatives PIP2) are formed and broken down in membranes by the action of specific kinases and phosphatases (futile cycles). Signal sensitive phospholipase C enzymes remove the inositol moiety, in particular from 1,4,5 trisphosphate (PIP2) as inositol 1,4,5 triphosphate (Ins P3: IP3). Both the diacyl glycerol and products act as second messengers. Synonym: phosphoinositide. (20 Sep 2002) |
| phosphokinase | A phosphotransferase or a kinase. (05 Mar 2000) |
| phospholamban kinase | <enzyme> A delta-cam kinase isozyme; catalyses the phosphorylation of phospholamban Registry number: EC 2.7.1.- Synonym: phospholamban sarcoplasmic reticulum calmodulin-dependent protein kinase, phospholamban srcam kinase (26 Jun 1999) |
| phospholamban phosphatase | <enzyme> Purified from canine cardiac cytosol; dephosphorylates pholamban; stimulated by mg+2, mn+2 or ca+2 Registry number: EC 3.1.3.- (26 Jun 1999) |
| phospholipase | <enzyme> That hydrolyse ester bonds in phospholipids. They comprise two types: aliphatic esterases (phospholipase A1, A2 and B) that release fatty acids and phosphodiesterases (types C and D) that release diacyl glycerol or phosphatidic acid respectively. Type A2 is widely distributed in venoms and digestive secretions. Types A1, A2 and C the latter specific for phosphatidyl inositol) are present in all mammalian tissues. Type C is also found as a highly toxic secretion product of pathogenic bacteria. Type B attacks monoacyl phospholipids and is poorly characterised. Type D is largely of plant origin. PLA2 Type II (a secreted enzyme, but not the same as the Type I digestive pancreatic enzyme) is probably very important in inflammation because its action can release arachidonic acid, the starting point for eicosanoid synthesis. Phosphatidyl inositol bisphosphate specific phospholipase C is important in generating diacyl glycerol and inositol trisphosphate, both second messengers. (31 Dec 1997) |
| phospholipase A1 | <enzyme> An enzyme that hydrolyzes a lecithin (1,2-diacylglycerophosphocholine) to a 2-acylglycerophosphocholine and a fatty acid anion. (05 Mar 2000) |
| phospholipase A2 | <enzyme> An enzyme that catalyses the hydrolysis of a lecithin to a lysolecithin by removing the 2-acyl group; also acts on other phospholipids by removing a fatty acid from the 2-position; this enzyme has an important role in prostaglandin and leukotriene biosynthesis. Synonym: lecithinase A, phosphatidase, phosphatidolipase. (05 Mar 2000) |
| phospholipase B | There are reports that phospholipase B is a mixture of phospholipase A1 and phospholipase A2. See: lysophospholipase. (05 Mar 2000) |
| phospholipase c | <enzyme> An enzyme found in the alpha-toxin of clostridium welchii and other strains of clostridia and bacilli. It hydrolyzes glycerophosphatidates with the formation of 1,2-diacylglycerol and a phosphorylated nitrogenous base such as choline. Chemical name: Phosphatidylcholine cholinephosphohydrolase Registry number: EC 3.1.4.3 (12 Dec 1998) |
| phospholipase d | <enzyme> An enzyme found mostly in plant tissue. It hydrolyzes glycerophosphatidates with the formation of a phosphatidic acid and a nitrogenous base such as choline. This enzyme also catalyses transphosphatidylation reactions. Chemical name: Phosphatidylcholine phosphatidohydrolase Registry number: EC 3.1.4.4 (12 Dec 1998) |
Synonyms : Phosphoglycerate Phosphomutase, Mutase, Phosphoglycerate, Phosphomutase, Phosphoglycerate
Synonyms : alpha Toxin
Synonyms : PLC gamma1, PLC-gamma, PLC-gamma 2, PLC-gamma D, PLCgamma2, Phospholipase C gamma 1, Phospholipase C gamma 2, Phospholipase C gamma D, Phospholipase C gamma1, Phospholipase C gamma2, Phospholipase C gammaD, PLC gamma, PLC gamma 2, PLC gamma D
Synonyms : Phosphatidylcholine Phosphohydrolase
Synonyms : Lecithinase, Phospholipase
| phosgene |
chemical formula COCl 2 , phosgene is a very toxic gas with a TLV of 0.1ppm. Phosgene has a moldy, hay like odor and is irritating. Phosgene is a reaction product that can form during chlorinated furnace cleans if sufficient oxygen isn't present.
출처: www.icknowledge.com/glossary/p.html
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| phosgene |
Carbonyl chloride; a colorless liquid below 8.2
출처: www.nbc-med.org/SiteContent/MedRef/OnlineRef/Field...
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| phosphoglycerate |
A three-carbon molecule formed when carbon dioxide is added to ribulose biphosphate (RuBP) during the dark reaction of photosynthesis (Calvin, or Calvin-Benson Cycle). PGA is converted to PGAL, using ATP and NADPH.
출처: www.emc.maricopa.edu/faculty/farabee/BIOBK/BioBook...
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| phosphate |
S are salts of phosphoric acid, distributed throughout the body. Inorganic phosphates occur chiefly in the skeleton in association with calcium, where they play a role in the mineralization of bone, and in body fluids, where they play a role in the mineralization of bone, and in body fluids, where they play a role in the regulation of acid/base balance.
출처: www.springboard4health.com/notebook/dict_p.html
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| phosphorescence |
Property held by some materials of absorbing light of one wavelength and emitting it as light of a different wavelength.
출처: www.startphoto.com/learn/glossary/glossary_ph-pn.h...
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