Adenine sentence example
- Various methyl derivatives of adenine have been described by E.
- ADENINE, or 6-AMINO-PURIN, C5H5N5, in chemistry, a basic substance which has been obtained as a decomposition product of nuclein, and also from the pancreatic glands of oxen.
- For the constitution of adenine see Purin.
- Fischer (Berichte, 1897, 30, p. 2238) by heating 2.6.8-trichlorpurin with 10 times its weight of ammonia for six hours at 100° C.; by this means 6-amino-2.8-dichlorpurin is obtained, which on reduction by means of hydriodic acid and phosphonium iodide is converted into adenine.
- The results at first obtained were very confusing and seemed to show that nucleic acid is very variable in constitution, but thanks to the work ~f Schmiedeberg and Stendel (Germany), Ivar Bang (Sweden) and Walter Jones and Levene (America), the confusion has been reduced to some sort of order, and it now seems probable that all ordinary nucleic acids yield two purine bases, adenine and guanine; two pyrimidine bases, cytosine and thymine and a hexose carbohydrate, the identity of which is uncertain.i The NucleolusIn the majority of plant-nuclei, both in the higher and lower plants, there is found, in addition to the chromatin network, a deeply stained spherical or slightly irregular body (sometimes more than one) called the nucleolus (fig.Advertisement
- Nucleic acid is at present of unknown constitution; decomposition products are: phosphoric acid, uracil or 2.6-dioxy-pyrimidin,1 cytosin or 2-oxy-6-amino-pyrimidin, thymin (nucleosin) or 2.6-dioxy-5-methyl pyrimidin hypoxanthin 1 or 6-oxypurin, xanthin or 2.6-dioxypurin, adenine or 6 amino-purin, guanine or 2amino-6-oxypurin, pentoses (l-xylose), laevulinic acid, ammonia, etc. The nucleic acids vary with the source of the proteids, there being considerable differences in chemical composition.
- Fischer (Berichte, 1897, 30, p. 2238) by heating 2.6.8-trichlorpurin with 10 times its weight of ammonia for six hours at 100Ã‚° C.; by this means 6-amino-2.8-dichlorpurin is obtained, which on reduction by means of hydriodic acid and phosphonium iodide is converted into adenine.
- Adenosine, a nucleotide containing adenine (red ), deoxyribose (black) and phosphoric acid (blue ).
- adenine dinucleotide - This coenzyme is synthesized in the liver.
- adenine nucleotide carrier.Advertisement
- adenine residues.
- adenine ring of ATP.
- adenine deaminase is present in trace amounts in animal tissues.
- Electron Transport System- Hydrogen ions produced during the 3 preparatory steps of aerobic respiration are carried by nicotinamide adenine dinucleotide (NAD ).
- nicotinamide adenine dinucleotide (NAD ).Advertisement
- The first three have apparently evolved from the adenine nucleotide carrier.
- The enzyme is modulated by adenine and guanine nucleotides, although it is difficult to make much sense of the observed effects.