| 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) |
| phospholipases | <enzyme> A class of enzymes that catalyze the hydrolysis of phosphoglycerides or glycerophosphatidates. Registry number: EC 3.1.- (12 Dec 1998) |
| phospholipases a | <enzyme> Phosphatide acylhydrolases. Catalyze the hydrolysis of one of the acyl groups of phosphoglycerides or glycerophosphatidates. Phospholipase a1 hydrolyzes the acyl group attached to the 1-position (ec 3.1.1.32) and phospholipase a2 hydrolyzes the acyl group attached to the 2-position (ec 3.1.1.4). Registry number: EC 3.1.1.- (12 Dec 1998) |
| phospholipid | <biochemistry> The major structural lipid of most cellular membranes (except the chloroplast which has galactolipids). Contain phosphate, usually as a diester. Examples include phosphatidyl phospholipids, plasmalogens and sphingomyelins. (18 Nov 1997) |
| phospholipid bilayer | <biochemistry> A lamellar organisation of phospholipids that are packed as a bilayer with hydrophobic acyl tails inwardly directed and polar head groups on the outside surfaces. It is this bilayer that forms the basis of membranes in cells, though in most cellular membranes a very substantial proportion of the area may be occupied by integral proteins. The triple layered appearance of membranes seen in electron microscopy is thought to arise because the osmium tetroxide binds to the polar regions leaving a central, unstained, hydrophobic region. (31 Dec 1997) |
| phospholipid ethers | Phospholipids which have an alcohol moiety in ethereal linkage with a saturated or unsaturated aliphatic alcohol. They are usually derivatives of phosphoglycerols or phosphatidates. The other two alcohol groups of the glycerol backbone are usually in ester linkage. These compounds are widely distributed in animal tissues. (12 Dec 1998) |
| phospholipid syndrome | <syndrome> The combination of antiphospholipid antibodies and the presence of either arterial or venous occlusive events such as thrombosis. (05 Mar 2000) |
| phospholipid transfer protein | <protein> Cytoplasmic proteins that bind phospholipids and facilitate their transfer between cellular membranes. May also cause net transfer from the site of synthesis. (18 Nov 1997) |
| phospholipid-hydroperoxide glutathione peroxidase | <enzyme> Selenoenzyme found in biological materials; different from glutathione peroxidase EC 1.11.1.9 Registry number: EC 1.11.1.- Synonym: pH-gperoxidase (26 Jun 1999) |
Synonyms : Hydrolases, Phosphoric Diester
Synonyms : Hydrolases, Phosphoric Monoester
Synonyms : Phosphotriesterase, Hydrolases, Phosphoric Triester, Triester Hydrolases, Phosphoric
Synonyms : Acids, Phosphorous
Synonyms : Red Phosphorus, Serum Phosphorus Level, Level, Serum Phosphorus, Phosphorus Level, Serum, Phosphorus, Red
| photic sneezing |
Photic sneeze reflex (also whimsically called ACHOO, a backronym for Autosomal dominant Compelling Helio-Ophthalmic Outburst) is a medical condition by which people exposed to bright light involuntarily sneeze. It has been suggested that the photic sneeze reflex occurs only after someone has been adapted to the dark for at least five minutes, although this is not certain, and is not uniform amongst people with the photic sneeze reflex. ...
출처: en.wikipedia.org/wiki/Photic_sneezing
|
|---|---|
| phobia |
The English suffix -phobia is technically used to describe irrational, disabling fear as a mental disorder, and commonly misused to describe hatred of a particular thing or subject. Everyday language has misused the use of this suffix as a mild or irrational fear with no serious substance; however, its origin is from areas of psychiatry which study serious phobias which disable a person's life. ...
출처: en.wikipedia.org/wiki/-phobia
|
| phobic |
The English suffix -phobia is technically used to describe irrational, disabling fear as a mental disorder, and commonly misused to describe hatred of a particular thing or subject. Everyday language has misused the use of this suffix as a mild or irrational fear with no serious substance; however, its origin is from areas of psychiatry which study serious phobias which disable a person's life. ...
출처: en.wikipedia.org/wiki/-phobic
|
| photoluminescence |
Fluorescence is a luminescence, i.e. optical phenomenon in cold bodies, in which a molecule absorbs a high-energy photon, and re-emits it as a lower-energy (longer-wavelength) photon. The energy difference between the absorbed and emitted photons ends up as molecular vibrations (heat). Usually the absorbed photon is in the ultraviolet, and the emitted light (luminescence) is in the visible range, but this depends on the absorbance curve and Stokes shift of the particular fluorophore. ...
출처: en.wikipedia.org/wiki/Photoluminescence
|
| phobophobia |
The English suffix -phobia is technically used to describe irrational, disabling fear as a mental disorder, and commonly misused to describe hatred of a particular thing or subject. Everyday language has misused the use of this suffix as a mild or irrational fear with no serious substance; however, its origin is from areas of psychiatry which study serious phobias which disable a person's life. ...
출처: en.wikipedia.org/wiki/Phobophobia
|
| PHO | light-sensitive paper on which photograph can be printed |
|---|---|
| PHO | a flat sheet of metal or glass on which a photographic image can be recorded |
| PHO | a printed picture produced from a photographic negative |
| PHO | by photographic means |
| PHO | the occupation of taking and printing photographs or making movies |
| PHO | the act of taking and printing photographs |
| PHO | the process of producing images of objects on photosensitive surfaces |
| PHO | using photography to produce a plate for printing |
| PHO | an intaglio print produced by gravure |
| PHO | printing from an intaglio plate prepared by photographic methods |
| PHO | journalism that presents a story primarily through the use of pictures |
| PHO | a lithograph produced by photographically produced plates |