CYTOSINE

Pronunciation (US):

(GB):

 Dictionary entry overview: What does cytosine mean? 

• CYTOSINE (noun)
  The noun CYTOSINE has 1 sense:

1. a base found in DNA and RNA and derived from pyrimidine; pairs with guanine

  Familiarity information: CYTOSINE used as a noun is very rare.

 Dictionary entry details 

• CYTOSINE (noun)

Sense 1

Meaning:

A base found in DNA and RNA and derived from pyrimidine; pairs with guanine

Classified under:

Nouns denoting substances

Synonyms:

C; cytosine

Hypernyms ("cytosine" is a kind of...):

pyrimidine (any of several basic compounds derived from pyrimidine)

Holonyms ("cytosine" is a substance of...):

deoxyribonucleic acid; desoxyribonucleic acid; DNA ((biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information)

ribonucleic acid; RNA ((biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell)

 Context examples 

A pyrimidine nucleoside that is composed of the base cytosine linked to the five-carbon sugar D-ribose.

(Cytidine, NLM, Medical Subject Headings)

Dactinomycin intercalates between adjacent guanine-cytosine base pairs, blocking the transcription of DNA by RNA polymerase; it also causes single-strand DNA breaks, possibly via a free-radical intermediate or an interaction with topoisomerase II.

(Dactinomycin, NCI Thesaurus)

A dinucleotide consisting of cytosine followed by guanine.

(CpG Dinucleotide, NCI Thesaurus)

Any immunoglobulin that recognizes cytosine/guanine (CpG) rich sequences in chromosomal DNA.

(CpG Antibody, NCI Thesaurus)

Chromomycin A3 reversibly binds to guanine-cytosine (G-C) base pairs in the minor groove of DNA, thereby inhibiting RNA synthesis.

(Chromomycin A3, NCI Thesaurus)

Chromomycin antibiotics bind to the minor groove of DNA, specifically to guanine/cytosine base pairs, and inhibit RNA synthesis.

(Chromomycin Antineoplastic Antibiotic, NCI Thesaurus)

A nucleoside component of DNA, composed of cytosine and deoxyribose, with chemopreventive activity.

(Deoxycytidine, NCI Thesaurus)

A nucleoside reverse transcriptase inhibitor analog of cytosine.

(Dexelvucitabine, NCI Thesaurus)

A DNA modification process where a hydrogen at the C5-position of a cytosine residue is replaced with a hydroxmethyl group.

(DNA Hydroxymethylation, NCI Thesaurus)

DNA Methylation Regulation involves cellular mechanisms that control covalent addition of methyl groups to specific cytosine residues of a DNA molecule, which typically influence gene expression and other genetic functions.

(DNA Methylation Regulation, NCI Thesaurus)