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Cytosine (/ˈsaɪtəˌsiːn, -ˌziːn, -ˌsɪn/) (symbol C or Cyt) is one of the four
nucleotide bases found in DNA and RNA,
along with adenine, guanine, and thymine...
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reaction of
cytosine into uracil,
releasing ammonia in the process. This can
occur in
vitro through the use of bisulfite,
which deaminates cytosine, but not...
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takes place:
adenine and
cytosine. The
modified bases are N6-methyladenine, 5-methylcytosine and N4-methylcytosine.
Cytosine methylation is widespread...
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Cytosine glycols are
intermediate unstable products of
cytosine oxidation. These, in turn, are
thought to
undergo deamination to
uracil glycol, dehydration...
- The CpG
sites or CG
sites are
regions of DNA
where a
cytosine nucleotide is
followed by a
guanine nucleotide in the
linear sequence of
bases along its...
- Cytarabine, also
known as
cytosine arabinoside (ara-C), is a
chemotherapy medication used to
treat acute myeloid leukemia (AML),
acute lymphocytic leukemia...
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methylated form of the DNA base
cytosine (C) that
regulates gene
transcription and
takes several other biological roles. When
cytosine is methylated, the DNA maintains...
- GC-content (or guanine-
cytosine content) is the
percentage of
nitrogenous bases in a DNA or RNA
molecule that are
either guanine (G) or
cytosine (C). This measure...
- In enzymology, a
cytosine deaminase (EC 3.5.4.1) is an
enzyme that
catalyzes the
chemical reaction cytosine + H2O ⇌ {\displaystyle \rightleftharpoons }...
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methyltransferases (N-4
cytosine-specific DNA methylases) are
enzymes that
specifically methylate the
amino group at the C-4
position of
cytosines in DNA. Such enzymes...
