| pyridofylline | 7-(2-Hydroxyethyl)theophylline hydrogen sulfate compound with pyridoxol; a coronary vasodilator. (05 Mar 2000) |
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| pyridones | Pyridine derivatives with one or more keto groups on the ring. (12 Dec 1998) |
| pyridostigmine bromide | <chemical> A cholinesterase inhibitor with a slightly longer duration of action than neostigmine. It is used in the treatment of myasthenia gravis and to reverse the actions of muscle relaxants. Pharmacological action: cholinesterase inhibitor, parasympathomimetic. Chemical name: Pyridinium, 3-(((dimethylamino)carbonyl)oxy)-1-methyl-, bromide (12 Dec 1998) |
| pyridoxal | <chemical> 3-hydroxy-5-(hydroxymethyl)-2-methyl-4- pyridinecarboxaldehyde. Chemical name: 4-Pyridinecarboxaldehyde, 3-hydroxy-5-(hydroxymethyl)-2-methyl- (12 Dec 1998) |
| pyridoxal kinase | <enzyme> An enzyme that catalyses reversibly the phosphorylation of pyridoxal in the presence of ATP with the formation of pyridoxal 5-phosphate and ADP. Pyridoxine, pyridoxamine and various derivatives can also act as acceptors. Chemical name: ATP:pyridoxal 5-phosphotransferase Registry number: EC 2.7.1.35 (12 Dec 1998) |
| pyridoxal phosphate | <enzyme> The co-enzyme derivative of vitamin B6. Forms Schiff's bases of substrate amino acids during catalysis of transamination, decarboxylation and racemisation reactions. (18 Nov 1997) |
| pyridoxamine | <chemical> Chemical name: 3-Pyridinemethanol, 4-(aminomethyl)-5-hydroxy-6-methyl- (12 Dec 1998) |
| pyridoxaminephosphate oxidase | <enzyme> An oxidoreductase enzyme catalyzing the oxidative deamination of pyridoxamine 5'-phosphate (with O2 and H2O) to pyridoxal phosphate. It is a flavoprotein that also oxidises pyridoxine-5-phosphate and pyridoxine. Chemical name: Pyridoxamine 5'-phosphate:oxygen oxidoreductase (deaminating) Registry number: EC 1.4.3.5 (12 Dec 1998) |
| pyridoxic acid | <chemical> Chief metabolic product of pyridoxine, pyridoxal, and pyridoxamine in urine. Chemical name: 4-Pyridinecarboxylic acid, 3-hydroxy-5-(hydroxymethyl)-2-methyl- (12 Dec 1998) |
| pyridoxine | <biochemistry> Member of the water soluble B vitamin group. Vitamin B6 or pyridoxine, is active in the metabolism of proteins, carbohydrates and fats. It is also a necessary part of haemoglobin synthesis. B6 deficiency results in retarded growth and a peripheral neuropathy. (27 Sep 1997) |
| pyridoxine 4-dehydrogenase | <enzyme> Chemical name: dehydrogenase, pyridoxol 4- Registry number: EC 1.1.1.65 Synonym: pyridoxine phosphate dehydrogenase, pyridoxal reductase (26 Jun 1999) |
| pyridoxine deficiency | A nutritional condition produced by a deficiency of pyridoxine in the diet, characterised by dermatitis, glossitis, cheilosis, and stomatitis. Marked deficiency causes irritability, weakness, depression, dizziness, peripheral neuropathy, and seizures. In infants and children typical manifestations are diarrhoea, anaemia, and seizures. Increasingly recognised as a cause is prolonged therapy with certain medications, among them isoniazid, cycloserine, and l-dopa. (12 Dec 1998) |
| pyridoxine dependency with seizure | An inherited disorder (autosomal recessive) apparently associated with deficient brain type I glutamate decarboxylase; seizures can be controlled with vitamin B6. (05 Mar 2000) |
| pyridoxine phosphate phosphatase | <enzyme> Involved in metabolism of vitamin b(6) Registry number: EC 3.1.3.- Synonym: pyridoxal phosphate phosphatase, pyridoxamine phosphate phosphatase, pyridoxal-p hydrolase, pyridoxamine-p hydrolase, vitamin b(6)-phosphate phosphatase (26 Jun 1999) |
| pyridyl | <chemistry> A hypothetical radical, C5H4N, regarded as the essential residue of pyridine, and analogous to phenyl. Origin: Pyridine + -yl. Source: Websters Dictionary (01 Mar 1998) |
Synonyms : Cyclobutane-Pyrimidine Dimers, Cytosine-Thymine Dimers, Thymine-Cyclobutane Dimer, Thymine-Thymine Cyclobutane Dimer, Cyclobutane Dimer, Thymine-Thymine, Cyclobutane Pyrimidine Dimers, Cytosine Thymine Dimers, Dimer, Thymine-Cyclobutane, Dimers, Pyrimidine
Synonyms : Nucleosides, Pyrimidine
Synonyms : Nucleotides, Pyrimidine
Synonyms :
Synonyms :
| pyramidal muscle of auricle |
musculus pyramidalis auricularis.
출처: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| pyrenoid |
In cell biology, pyrenoids are centers of carbon dioxide fixation. They are not membrane-bound organelles, but specialized areas in algal plastids and contain high amounts of ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO). RubisCO takes carbon dioxide and adds it to the sugar ribulose-1,5-bisphosphate. It needs six molecules of carbon dioxide and six molecules of ribulose-1,5-bisphosphate = six cycles of the Calvin cycle to make one new molecule of glucose. ...
출처: en.wikipedia.org/wiki/Pyrenoid
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| pyrocatechol |
Benzenediols or dihydroxybenzenes are aromatic chemical compounds in which two hydroxyl groups are substituted onto a benzene ring. Because they have at least one hydroxyl group covalently bonded directly to a carbon atom in a benzene ring, they are in a class of organic compounds called phenols. There are three isomers of bezenediol, each of which has its own common or non-systematic name as shown in the mini-table below. ...
출처: en.wikipedia.org/wiki/Pyrocatechol
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| pyrophosphoric acid |
Pyrophosphoric acid, also known under the name diphosphoric acid, is a syrupy liquid or a needle-like crystaline solid. Pyrophosphoric acid is colorless, odorless, hygroscopic and is soluble in water, diethyl ether, and ethyl alcohol. It is the anhydride of phosphoric acid and is produced from phosphoric acid by dehydration. Pyrophosphoric acid is a medium strong inorganic acid. The anion, the salts, and the esters of pyrophosphoric acid are called pyrophosphates. ...
출처: en.wikipedia.org/wiki/Pyrophosphoric_acid
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| pyramidal |
A pyramid is a geometric shape formed by connecting a polygonal base and a point, called the apex, by triangular faces. When unspecified the base is usually assumed to be square. One of the Platonic solids, the tetrahedron, is a triangular pyramid. The square and pentagonal pyramids can also be constructed with all faces regular, and so count among the Johnson solids. All pyramids are self-dual. ...
출처: en.wikipedia.org/wiki/Pyramidal
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| Pyr | delicate evergreen dwarf herb of north temperate regions having a solitary white terminal flower |
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| Pyr | evergreen herbs of temperate regions: genera Pyrola |
| Pyr | worship of fire |
| Pyr | of a substance produced by the effect of heat on wood, especially by destructive distillation |
| Pyr | a red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars |
| Pyr | of a substance produced by the effect of heat on wood, especially by destructive distillation |
| Pyr | a mineral consisting of manganese dioxide |
| Pyr | transformation of a substance produced by the action of heat |
| Pyr | resulting from pyrolysis |
| Pyr | divination by fire or flames |
| Pyr | an uncontrollable desire to set fire to things |
| Pyr | a person with a mania for setting things on fire |