Cytosine

One of the four bases in DNA that make up the letters ATGC, cytosine is the "C". The others are adenine, guanine, and thymine. Cytosine always pairs with guanine.
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Cytosine: A nitrogenous base. Pairs with guanine in DNA molecules.
DNA (deoxyribonucleic acid): the molecule that encodes genetic information. DNA is composed of two anti-parallel strands which wind about a common axis to form a double helix.
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Cytosine (C)
Cytosine is a pyrimidne base (nitrogenous base) and constituent of nulceotides and as such one member of the base pair G-C (guanine and cytosine) .
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Cytosine
These hydrogen bonding modes are for classical Watson-Crick base pairing.
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Cytosine (C): A nitrogenous base, one member of the base pair GC (guanine and cytosine).
D
Deoxyribonucleotide: See nucleotide.
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cytosine One of the pyrimidine nitrogenous bases occurring in both DNA and RNA. PICTURE ...
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Cytosine (C): One of the pyrimidine bases found in DNA and RNA (4-amino-2-hydroxypyrimidine). one member of the base pair G- C (guanine and cytosine).
D
Dalton: Unit of atomic mass. One dalton corresponds to the mass of a hydrogen atom = 3.32X10-24 g.
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cytosine A nitrogen base found in both DNA and RNA.
cytoskeleton In the cytoplasm of eukaryotic cells, an internal framework of microtubules, microfilaments, and intermediate filaments by which organelles and other structures are anchored, organized, ...
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Hydroxymethyl cytosine
A modification of cystine residues. This modification is typical of some phage DNA. The modified DNA is resistant to certain restriction endonucleases.
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PYRIMIDINE BASES - Cytosine (C), Thymine (T) or Uracil (U) (see NUCLEOTIDE).
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A pair of complementary nitrogenous bases in a DNA molecule--adenine-thymine and guanine-cytosine. Also, the unit of measurement for DNA sequences. Bioaugmentation.
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Base sequence -- a partnership of organic bases found in DNA and RNA; adenine forms a base pair with thymine (or uracil) and guanine with cytosine in a double-stranded nucleic acid molecule.
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For example, several cytosines in eukaryotic DNA are methylated (5-methylcytosine).
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An organic acid and polymer composed of four nitrogenous bases--adenine, thymine, cytosine, and guanine linked via intervening units of phosphate and the pentose sugar deoxyribose.
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In the case of DNA this is comprised of adenine (A), guanine (G), cytosine (C) and thymine (T). RNA is identical with the exception that thymine (T) is substituted with uracil (U). Codons are non-overlapping groups of the three bases.
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increased methylation of the cytosines in CpG islands of the DNA [Link];
decreased acetylation of histones and ...
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Losses from 5-methyl cytosine and cytosine occur more frequently than from adenine and guanine. Base pairing stabilizes the amino groups.
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Included in this group are the nucleoside analogs, chemicals that are similar to one of the bases (adenine, cytosine, guanine, and thymine) that comprise DNA, but sufficiently different enough to block viral DNA synthesis.
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For instance, a mismatch repair enzyme would recognize when Cytosine (C) is mistakenly paired with Thymine (T). The enzyme would then replace Thymine with Guanine (G), resulting in a correct pair between Cytosine (C) and Guanine (G).
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A post-replication process. Cytosine residues in CpG sequences are methylated, forming gene-specific methylation patterns. Methylation of promoter regions correlates with gene expression patterns.
Related
Chromatin Epigenetics ...
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important organic compounds (bases) such as cytosine, thymine, and uracil, which are constituents of nucleic acids
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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Nucleotide: A molecular subunit of DNA or RNA consisti ng of a base (adenine, guanine, thymine, or cytosine in DNA; adenine, guanine, uracil, or cytosine in RNA). Thousands of nucleotides are linked to form a DNA or RNA molecule.
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A nitrogenous base, such as cytosine, thymine, or uracil, with a characteristic single-ring structure; one of the components of nucleic acids.
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Jeffrey Yoder et al "Cytosine methylation and the ecology of intragenomic parasites", Trends in Genetics, Aug 1997, vol 13, no. 8 [PubMed]
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complementary base pairs - base-pairing between a larger purine base (adenine or guanine) and a smaller pyrimidine base (cytosine or thymine) while DNA is in its double-helix. (A/T, G/C) ...
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The two strands are held together by hydrogen bonds (electrostatic attraction). Two hydrogen bonds hold adenine to thymine. Three bonds attach cytosine to guanine as indicated in the diagram above.
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pyrimidine: a type of nitrogenous base in DNA molecules that has one ring containing carbon and nitrogen atoms; two examples in DNA are cytosine (C) and thymine (T).
A-D E-K
L-P
R-Z ...
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(deoxyribonucleic acid): The large double-stranded molecule carrying the genetic code. It consists of four bases (adenine, guanine, cytosine and thymine), phosphate and ribose.
DNA binding motif ...
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