Nucleotides constitute the monomeric units of which the nucleic acids are composed; this means that nucleic acids are polynucleotides. The nucleic acids are of two types—deoxyribonucleic acid (DNA) and ribonucleic acid (RNA)— and are responsible for directing the synthesis of proteins. They ...
Transfer RNA (tRNA) is one of the smallest of the four types of RNA, usually 70–90 nucleotides long. It carries the correct amino acid to the protein synthesis site. It is the base pairing between the tRNA and mRNA that allows for the correct amino acid to insert itself in the ...
Chapter8Nucleotidesandnucleicacids ➢Historyoftheresearch➢Nucleicacidstructure➢Nucleicacidchemistry➢Otherfunctionsofnucleotides Overview ➢Proteins,carbohydrates,lipids,nucleicacidsarethefourcategoriesofmacromolecules,necessaryforlife.➢Nucleicacidsplayacriticalroleinthestorageandfunctionofgeneticinformationinall...
Nucleic Acid Geom, Dyn., Pergamon Press 1980, p. 143 Google Scholar Bobruskin, I. D., et al.: Nuclear magnetic resonance study of the conformation of nucleotides, oligonucleotides and their analogs in solution. IV. Syn-anti equilibrium in aqueous solution of 2’-deoxynucleosides and ...
Section28.2Nucleosidesarecarbohydratederivativesofpyrimidineandpurinebases.Themostimportantnucleosidesare derivedfromD-riboseand2-deoxy-D-ribose. Section28.3Nucleotidesarephosphoricacidestersofnucleosides. Intheexampleshown,the59-OHgroupisphosphorylated.Nucleotidesarealsopossibleinwhichsomeother OHgroupbearsthephosphateest...
11.4NucleotidesAreNucleosidePhosphates Anucleotide核苷酸resultswhenphosphoricacidisesterifiedtoasugar-OHgroupofanucleoside核苷.CyclicNucleotides:cAMPandcGMP,areimportantregulatorsofcellularmetabolism Nucleosidemonophosphatesinwhichthephosphoricacidisesterifiedtotwooftheavailableribosehydroxylgroupsarefoundinallcells.Formingtwo...
Properties of Pyrimidines and Purines Keto-enol tautomerism Acid/base dissociations Strong absorbance of UV light Pentoses of Nucleotides Know these structures too D-ribose (in RNA) 2-deoxy-D-ribose (in DNA) The difference - 2-OH vs 2-H This difference affects secondary structure and stabilit...
Chapter11NucleotidesandNucleicacids核苷酸和核酸 Informationtransferinacell细胞中信息的转化Thebases,nucleosideandNucleotide碱基、核苷、核苷酸BasicStructureofnucleicacids核酸结构Classesofnucleicacids核酸的类型Hydrolysesofnucleicacids核酸的水解 Informationtransferinacell细胞中信息的转化 DNAis...
《Nucleosides Nucleotides & Nucleic Acids》(《核苷 核苷酸和核酸》)是一本由Taylor and Francis Ltd.出版的生物-生化与分子生物学学术刊物,主要刊载生物-生化与分子生物学相关领域研究成果与实践,旨在打造一种学术水平高、可读性强、具有全球影响力的学术期刊。本刊已入选SCIE来源期刊。该刊创刊于2000年,出版周期Mont...
Phosphoric esters of nucleosides are called nucleotides. The purines adenine and guanine, and the pyrimidines uracil and cytosine, occur as their ribosides adenosine, guanosine, uridine and cytidine, respectively, in ribonucleie acid (RNA). The deoxyribosides of adenine, guanine, cytosine and ...