nucleoside

nu·cle·o·side

N0187800 (no͞o′klē-ə-sīd′, nyo͞o′-)n. Any of various compounds, such as adenosine or guanosine, that consist of a sugar, usually ribose or deoxyribose, linked to a purine or pyrimidine base. Nucleosides are constituents of the nucleotides that make up nucleic acids.

nucleoside

(ˈnjuːklɪəˌsaɪd) n (Biochemistry) biochem a compound containing a purine or pyrimidine base linked to a sugar (usually ribose or deoxyribose)[C20: from nucleo- + -ose² + -ide]

nu•cle•o•side

(ˈnu kli əˌsaɪd, ˈnyu-)

n. any of the class of compounds derived by the hydrolysis of nucleic acids or nucleotides, consisting typically of deoxyribose or ribose combined with adenine, guanine, cytosine, uracil, or thymine. [< German Nucleosid (1909)]

Thesaurus

Noun

nucleoside - a glycoside formed by partial hydrolysis of a nucleic acidadenosine - (biochemistry) a nucleoside that is a structural component of nucleic acids; it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMPglycoside - a group of compounds derived from monosaccharidesinosine - a nucleoside that is formed by the deamination of adenosine; used in kidney transplantation to provide a temporary source of sugardeoxyadenosine - a nucleoside component of DNA; composed of adenosine and deoxyribosecytidine, deoxycytidine - a nucleoside component of DNA; composed of cytosine and deoxyribosedeoxyguanosine, guanosine - a nucleoside component of DNA; composed of guanine and deoxyribosedeoxythymidine, thymidine - a nucleoside component of DNA; composed of thymine and deoxyribose

Translations

nucleoside

Nucleoside

enUK

nucleoside

[′nü·klē·ə‚sīd] (biochemistry) The glycoside resulting from removal of the phosphate group from a nucleotide; consists of a pentose sugar linked to a purine or pyrimidine base.

Nucleoside

a compound that consists of a nitrogenous base and a carbohydrate. A nucleoside whose carbohydrate portion is ribose is called a ribonucleoside, and a deoxyribose-containing nucleoside is called a deoxyribonucleoside. Nucleosides have the following structural formula:

In deoxyribonucleosides, X is replaced by a hydrogen atom, while in ribonucleosides, a hydroxyl group replaces X. R can be any purine or pyrimidine base.

A nucleoside can be regarded as the product of the dephos-phorylation of a nucleotide. In a nucleoside, the purine or pyrimidine base is connected to the 1′ carbon atom by a β-glycoside bond. Nucleosides are named according to their base; thus, adenosine contains adenine, guanosine—guanine, uridine—uracil, cytidine—cytosine, and thymidine—thymine. The nucleosides that contain hypoxanthine and xanthine are called inosine and xanthosine, respectively. A few other nucleosides exist, which are structurally similar to those mentioned but which differ in the particular base, carbohydrate component, or type of internal bonds.

Free nucleosides are present in small quantities in several biological substances. The significance of most nucleosides, however, is their occurrence as constituents of nucleotides and nucleic acids.

I. B. ZBARSKH

nucleoside

[noo´kle-o-sīd] any of a class of compounds produced by hydrolysis of nucleotides, consisting of a sugar (a pentose or a hexose) and a purine or base" >pyrimidine base.

nu·cle·o·side (Nuc, N),

(nū'klē-ō-sīd'), A compound of a sugar (usually ribose or deoxyribose) with a purine or pyrimidine base by way of an N-glycosyl link.

nucleoside

(no͞o′klē-ə-sīd′, nyo͞o′-)n. Any of various compounds, such as adenosine or guanosine, that consist of a sugar, usually ribose or deoxyribose, linked to a purine or pyrimidine base. Nucleosides are constituents of the nucleotides that make up nucleic acids.

nu·cle·o·side

(nū'klē-ō-sīd) A compound of a sugar (usually ribose or deoxyribose) with a purine or pyrimidine base.

nucleoside

A molecule compounded of a purine or pyrimidine base attached to a sugar (ribose or deoxyribose). The genetic code in DNA and RNA depends on the order of the nucleosides. A nucleoside is a NUCLEOTIDE without the phosphate group.

nucleoside

a chemical compound in which a nitrogenous base is attached to a sugar. Such a structure occurs in DNA nucleotides where a phosphate group is attached to the deoxyribose sugar of the nucleoside.

nu·cle·o·side

(nū'klē-ō-sīd) A compound of a sugar (usually ribose or deoxyribose) with a purine or pyrimidine base.

nucleoside

nu·cle·o·side

nucleoside

nu•cle•o•side

Nucleoside

nucleoside

Nucleoside

nucleoside

nucleoside

nu·cle·o·side (Nuc, N),

nucleoside

nu·cle·o·side

nucleoside

nucleoside

nu·cle·o·side

nucleoside

Words related to nucleoside

noun a glycoside formed by partial hydrolysis of a nucleic acid

Related Words