Nucleic acids
The molecules in the chromosomes of living cells and viruses that plays a central role in the storage and replication of hereditary information and in the expression of this information through protein synthesis. The two chief types of nucleic acids are: {{}}DNA (deoxyribonucleic acid) which contains the hereditary information in humans and RNA (ribonucleic acid) which delivers the instructions coded in this information to the cell’s protein manufacturing sites. History: In 1869 Friedrich Miescher developed ways of isolating intact nuclei from cells and analyzing their chemical content. From the nuclei he extracted substances rich in phosphorus and nitrogen. They came to be known as "nucleic acids." Miescher predicted that they would someday be considered as important as proteins. The substances turned out to be deoxyribonucleic acid (DNA) which was found by Avery, MacLeod and McCarty in 1944 to be the genetic material. They proved this clearly by using bacterial DNA to change (transform) the genetic material of other bacteria.

Medical dictionary. 2011.

Look at other dictionaries:

  • nucleic acids — nukleorūgštys statusas T sritis augalininkystė apibrėžtis Biopolimerai, susidedantys iš nukleotidų. atitikmenys: angl. nucleic acids rus. нуклеиновые кислоты …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • nucleic acids — acids that comprise part of the DNA, acids that make up hereditary apparatus …   English contemporary dictionary

  • nucleic acids — Linear polymers of nucleotides, linked by 3 ,5 phosphodiester linkages. In DNA, deoxyribonucleic acid, the sugar group is deoxyribose, and the bases of the nucleotides adenine, guanine, thymine and cytosine. RNA, ribonucleic acid, has ribose as… …   Dictionary of molecular biology

  • nucleic acids — Polymers of nucleotides that are active in inheritance as genes, plasmids, etc …   Dictionary of invertebrate zoology

  • Nucleic Acids Symposium Series —   Titre abrégé Nucleic Acids Symp. Ser. Discipline Biochimie Chimie …   Wikipédia en Français

  • Nucleic Acids Research —   Abbreviated title (ISO) …   Wikipedia

  • Nucleic Acids Research —   Titre abrégé Nucleic Acids Res. Discipline Biochimie, biologie moléculaire …   Wikipédia en Français

  • Nuclear magnetic resonance spectroscopy of nucleic acids — Nuclear magnetic resonance spectroscopy of nucleic acids, often referred to as nucleic acid NMR, is the use of nuclear magnetic resonance spectroscopy to obtain information about the structure and dynamics of nucleic acid molecules, such as DNA… …   Wikipedia

  • Quantification of nucleic acids — is commonly used in molecular biology to determine the concentrations of DNA or RNA present in a mixture, as subsequent reactions or protocols using a nucleic acid sample often require particular amounts for optimum performance. There exist… …   Wikipedia

  • Molecular Structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid — First Publication Discovery of the DNA Double Helix Maclyn McCarty with Francis Crick and James D Watson Willia …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”