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Cytosine (/ˈsaɪtəˌsiːn, -ˌziːn, -ˌsɪn/) (symbol C or Cyt) is one of the four
nucleobases found in DNA and RNA,
along with adenine, guanine, and thymine...
- 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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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...
- and RNA, the
others being adenine,
cytosine, and
thymine (uracil in RNA). In DNA,
guanine is
paired with
cytosine. The
guanine nucleoside is
called guanosine...
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adenine and
cytosine. The
modified bases are N6-methyladenine, 5-methylcytosine and N4-methylcytosine. Two of DNA's four bases,
cytosine and adenine,...
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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...
- 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...
- 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...
- 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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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...