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nucleotide |
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nucleotide (n  `klēətīd', ny`–), organic substance that serves as a monomer in forming nucleic acids nucleic acid, any of a group of organic substances found in the chromosomes of living cells and viruses that play a central role in the storage and replication of hereditary information and in the expression of this information through protein synthesis...... Click the link for more information. . Nucleotides consist of either a purine purine, type of organic base found in the nucleotides and nucleic acids of plant and animal tissue. The German chemist Emil Fischer did much of the basic work on purines and introduced the term into the chemical literature in the early 20th cent. ..... Click the link for more information. or a pyrimidine pyrimidine (pīrĭm`ĭdēn') ..... Click the link for more information. base, a ribose ribose (rī`bōs), monosaccharide carbohydrate of universal distribution in living tissue, found in ribonucleic acid (RNA; see nucleic ..... Click the link for more information. or deoxyribose, and a phosphate group. Adenosine triphosphate adenosine triphosphate (ATP) (ədĕn`əsēn trī'fŏs`fāt) ..... Click the link for more information. serves as the principle energy carrier for the cell's reactions. The most important nucleotides are those derived from the bases adenine adenine (ăd`ənĭn, –nīn, –nēn), organic base of the purine family. ..... Click the link for more information. , guanine guanine (gwä`nēn), organic base of the purine family. ..... Click the link for more information. , cytosine cytosine (sī`tōsēn'), organic base of the pyrimidine family. ..... Click the link for more information. , thymine thymine (thī`mēn), organic base of the pyrimidine family. ..... Click the link for more information. , and uracil uracil (y  r`əsĭl), organic base of the pyrimidine family...... Click the link for more information. . nucleotideAny of a class of organic compounds, including the structural units of nucleic acids. Each consists of a nucleoside and one or more phosphate groups. In nucleic acids, the phosphate of one nucleotide joins to the sugar of the next to form the backbone. Important nucleotides that are not part of nucleic acids include ATP, cyclic AMP (needed in glycogen breakdown), and certain coenzymes. |
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The differences in nucleotide sequences encoding protein E between subtypes of TBEV may reach 18%-19%; amino acid sequences are considerably more conserved (10). This patent covers sweet proteins that are variants of brazzein, and nucleotide sequences capable of expressing them. Nucleotide sequences were determined by oligonucleotide-directed dideoxynucleotide chain-termination sequencing reactions utilizing 300 ng of template DNA, forward (M13F) and reverse (M-13R) primers, fluorescently-labeled dideoxynucleotides and AmpliTaq FS DNA polymerase in a cycling sequencing method. |
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nucleotide sequences
