| adenosine tetraphosphatase | <enzyme> Catalyses hydrolysis of nucleoside 5'-tetraphosphate to yield nucleoside triphosphate and orthophosphate; isolated from seeds of yellow lupin lupinus luteus Registry number: EC 3.6.1.14 Synonym: p4a phosphohydrolase, adenosine 5'-tetraphosphate phosphohydrolase, nucleoside 5'-tetraphosphate phosphohydrolase (26 Jun 1999) |
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| adenosine tetraphosphate | A condensation product of adenosine with tetraphosphoric acid at the 5' position. (05 Mar 2000) |
| adenosine triphosphatase | <enzyme> A group of enzymes which catalyze the hydrolysis of ATP coupled with another function such as transporting calcium across a membrane. These enzymes may be dependent on calcium, magnesium, anions, h+, or DNA. Chemical name: ATP phosphohydrolase Registry number: EC 3.6.1.3 (12 Dec 1998) |
| adenosine triphosphate | <biochemistry> A nucleotide present in all living cells which serves as an energy source for many metabolic processes and is required for ribonucleic acid synthesis. (06 May 1997) |
| adenosine-5'-(n-ethylcarboxamide) | <chemical> A stable adenosine a1 and a2 receptor agonist. Experimentally, it inhibits camp and cgmp phosphodiesterase activity. Pharmacological action: antineoplastic agent, vasodilator agents. (12 Dec 1998) |
| adenosis | A rarely used term for a more or less generalised glandular disease. (05 Mar 2000) |
| adenosquamous carcinoma | <tumour> A type of lung tumour exhibiting areas of clear cut glandular and squamous cell differentiation along with regions of the undifferentiated carcinoma. (05 Mar 2000) |
| adenosyl | The radical of adenosine minus an H or OH from one of the ribosyl OH groups, usually the 5', e.g., S-adenosyl-l-methionine. (05 Mar 2000) |
| adenosylcobalamin | A derivative of vitamin B12. Its impaired biosynthesis can lead to methylmalonic acidemia. (05 Mar 2000) |
| adenosylmethionine decarboxylase | <enzyme> An enzyme that catalyses the decarboxylation of s-adenosyl-l-methionine to yield 5'-deoxy-(5'-),3-aminopropyl-(1), methylsulfonium salt. It is one of the enzymes responsible for the synthesis of spermidine from putrescine. Chemical name: S-Adenosyl-L-methionine carboxy-lyase Registry number: EC 4.1.1.50 (12 Dec 1998) |
| adenotomic | Pertaining to adenotomy. Source: Websters Dictionary (01 Mar 1998) |
| adenotomy | <anatomy> Dissection of, or incision into, a gland or glands. Origin: Adeno- + Gr. A cutting, to cut. Source: Websters Dictionary (01 Mar 1998) |
| adenotonsillectomy | Operative removal of tonsils and adenoids. (05 Mar 2000) |
| adenous | Rarely used term for adenose. (05 Mar 2000) |
| adenoviridae | <virology> A family of non-enveloped viruses infecting mammals (mastadenovirus) and birds (aviadenovirus). Infections may be asymptomatic or result in a variety of diseases. (12 Dec 1998) |