| 영문 | nucleic acid | 한글 | 핵산 |
|---|---|---|---|
| 설명 | 염기, 당, 인산으로 이루어진 뉴클레오티드가 긴 사슬 모양으로 중합된 고분자 물질. 유전이나 단백질 합성을 지배하는 중요한 물질로, 생물의 증식을 비롯한 생명 활동 유지에 중요한 작용을 한다. 구성 당인 오탄당이 리보오스인 리보핵산과 디옥시리보오스인 디옥시리보 핵산으로 나뉜다. 펜토스로서 리보스나 데옥시리보스 어느 한쪽만을 포함하며 전자를 리보핵산(RNA), 후자를 데옥시리보핵산(deoxyribonucleic acid, DNA)이라 부른다. 모두 4종류의 유기염기에 의해 특징지어지며 아데닌, 구아닌 및 시토신은 양자에 공통이다. 티민은 DNA에, 우라실은 RNA에 포함된다. DNA는 주로 핵에 존재하며 형질유전에 그리고 RNA는 세포질속에서 단백질 합성에 관여한다. 섭취된 핵산은 소화관에서 구성분자로까지 가수분해되어 흡수된다. |
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| levallorphan tartrate | 1-N-Allyl-3-hydroxymorphinan tartrate;the N-allyl analog of levorphanol, antagonistic to the actions of narcotic analgesics; used in the treatment of respiratory depression due to overdosage of narcotics. (05 Mar 2000) |
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| levorphanol tartrate | L-3-Hydroxy-N-methylmorphinan tartrate dihydrate;an analgesic similar in action to morphine. (05 Mar 2000) |
| L-tartrate decarboxylase | <enzyme> Nad+ dependent enzyme; catalyses the decarboxylation of l-tartrate in pseudomonas sp. Group ve-2 forming glyceric acid and co2 via enzyme-bound oxaloglycolate Registry number: EC 4.1.1.- (26 Jun 1999) |
| L-tartrate dehydratase | <enzyme> From E coli; forms oxaloacetate and water; exists in an inactive low-molecular form, which is converted into the active enzyme in the presence of fe(2+) and thiol; related to class I fumarases Registry number: EC 4.2.1.32 Synonym: (r,r)-tartrate hydro-lyase (26 Jun 1999) |
| alpha-phenoxyethylpenicillin potassium | A penicillin preparation that is stable in gastric acid and is rapidly but only partially absorbed from the gastrointestinal tract. Synonym: alpha-phenoxyethylpenicillin potassium, penicillin B. (05 Mar 2000) |
| alpha-phenoxypropylpenicillin potassium | A semisynthetic acid-stable penicillin that may be more effective than penicillin G. Synonym: alpha-phenoxypropylpenicillin potassium. (05 Mar 2000) |
| aluminum potassium sulfate | AlK(SO4)2;an astringent and styptic; also used in veterinary medicine for ulcerative stomatitis, leukorrhoea, and conjunctivitis. Synonym: potassium alum. (05 Mar 2000) |
| amoxicillin-potassium clavulanate combination | <chemical> A fixed-ratio combination of amoxicillin trihydrate, an aminopenicillin, and potassium clavulanate, a beta-lactamase inhibitor, used to treat broad-spectrum antibacterial infections, especially of resistant strains. Pharmacological action: antibiotics, combined, antibiotics, lactam, enzyme inhibitors. (12 Dec 1998) |
| canrenoate potassium | <chemical> A synthetic pregnadiene derivative with anti-aldosterone activity. Pharmacological action: aldosterone antagonists. Chemical name: Pregna-4,6-diene-21-carboxylic acid, 17-hydroxy-3-oxo-, monopotassium salt, (17alpha)- (12 Dec 1998) |
| penicillin G potassium | Potassium benzylpenicillin;the potassium salt of penicillin G, containing 85 to 90% penicillin G. (05 Mar 2000) |
| phenethicillin potassium | A penicillin preparation that is stable in gastric acid and is rapidly but only partially absorbed from the gastrointestinal tract. Synonym: alpha-phenoxyethylpenicillin potassium, penicillin B. (05 Mar 2000) |
| monobasic potassium phosphate | KH2PO4;used as a urinary acidifier and buffer. (05 Mar 2000) |
| potassium | <chemistry> An Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium). It is reduced from the carbonate as a soft white metal, lighter than water, which oxidizes with the greatest readiness, and, to be preserved, must be kept under liquid hydrocarbons, as naphtha or kerosene. Its compounds are very important, being used in glass making, soap making, in fertilisers, and in many drugs and chemicals. Potassium permanganate, the salt KMnO4, crystallizing in dark red prisms having a greenish surface colour, and dissolving in water with a beautiful purple red colour; used as an oxidizer and disinfectant. The name chameleon mineral is applied to this salt and also to potassium manganate. Potassium bitartrate. See Cream of tartar. Origin: NL. See Potassa, Potash. Source: Websters Dictionary (01 Mar 1998) |
| potassium-40 | A naturally occurring (0.0117%) radioactive potassium isotope; beta emitter with half-life of 1.26 billion years; chief source of natural radioactivity of living tissue. (05 Mar 2000) |
| potassium-42 | An artificial potassium isotope; beta emitter with half-life of 12.36 hr, used as a tracer in studies of potassium distribution in body fluid compartments and in localization of brain tumours. (05 Mar 2000) |