Cytosine is an English word with synonyms like pyrimidine. Below you'll find 10+ example sentences showing how it's used in practice.
Cytosine meaning
A heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).
Synonyms of Cytosine
Using Cytosine
- The main meaning on this page is: A heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds).
- Useful related words include: c, pyrimidine.
- In the example corpus, cytosine often appears in combinations such as: cytosine and, and cytosine, of cytosine.
Context around Cytosine
- Average sentence length in these examples: 21.8 words
- Position in the sentence: 3 start, 10 middle, 7 end
- Sentence types: 20 statements, 0 questions, 0 exclamations
Corpus analysis for Cytosine
- In this selection, "cytosine" usually appears in the middle of the sentence. The average example has 21.8 words, and this corpus slice is mostly made up of statements.
- Around the word, thymine, nucleotides, dna, methylation, bases and stronger stand out and add context to how "cytosine" is used.
- Recognizable usage signals include adenine a cytosine c guanine and adenine and cytosine alternate and. That gives this page its own corpus information beyond isolated example sentences.
- By corpus frequency, "cytosine" sits close to words such as abhinandan, abhor and abscesses, which helps place it inside the broader word index.
Example types with cytosine
The same corpus examples are grouped by length and sentence type, making it easier to see the contexts in which the word appears:
Inosine occurs in tRNAs, and will pair with adenine, cytosine, or thymine. (12 words)
Aspartate carbamoyltransferase performs a step in building the pyrimidine nucleotides ( cytosine and thymidine ). (13 words)
This is because cytosine can deaminate spontaneously to produce uracil through hydrolytic deamination. (13 words)
Hypoxanthine can bind to cytosine, and when the XC base pair is replicated, it becomes a GC (thus, an A → G base change). citation Over time, base changes in the DNA sequence can arise from deamination mutations. (37 words)
Expansion of CAG ( cytosine adenine guanine ) triplet repeats in the gene coding for the Huntingtin protein results in an abnormal protein, which gradually damages cells in the brain, through mechanisms that are not fully understood. (35 words)
On the 3'ss (3' splicing site), the base pairs adenine and cytosine alternate and repeat, and on the 5'ss (5' splicing site), their complements thymine and guanine alternate and repeat as well. (34 words)
Example sentences (20)
All genetic coding is formed by four bases: adenine, thymine, cytosine and guanine -- or A, T, C and G. All healthy base pairs are either A-T or C-G.
A base is attached to the 1' position, in general, adenine (A), cytosine (C), guanine (G), or uracil (U).
Adenine binds with thymine and uracil; Thymine binds only with adenine; and cytosine and guanine can bind only with one another.
Adenine pairs with thymine (two hydrogen bonds), and guanine pairs with cytosine (stronger: three hydrogen bonds).
An example of a transversion is the conversion of adenine (A) into a cytosine (C).
Aspartate carbamoyltransferase performs a step in building the pyrimidine nucleotides ( cytosine and thymidine ).
Bacteria also use DNA adenine methylation (rather than DNA cytosine methylation) as an epigenetic signal.
Base modifications can be involved in packaging, with regions that have low or no gene expression usually containing high levels of methylation of cytosine bases.
Chemical modifications and altered DNA packaging Structure of cytosine with and without the 5-methyl group.
DNA is first treated with sodium bisulfite, which converts unmethylated cytosine bases to uracil, which is recognized by PCR primers as thymine.
Expansion of CAG ( cytosine adenine guanine ) triplet repeats in the gene coding for the Huntingtin protein results in an abnormal protein, which gradually damages cells in the brain, through mechanisms that are not fully understood.
For example, silent mutations that do not change the corresponding amino acid sequence of a gene may change the frequency of guanine cytosine base pairs ( GC content ).
Here, purines form hydrogen bonds to pyrimidines, with adenine bonding only to thymine in two hydrogen bonds, and cytosine bonding only to guanine in three hydrogen bonds.
Hypoxanthine can bind to cytosine, and when the XC base pair is replicated, it becomes a GC (thus, an A → G base change). citation Over time, base changes in the DNA sequence can arise from deamination mutations.
Inosine occurs in tRNAs, and will pair with adenine, cytosine, or thymine.
On the 3'ss (3' splicing site), the base pairs adenine and cytosine alternate and repeat, and on the 5'ss (5' splicing site), their complements thymine and guanine alternate and repeat as well.
The bases form hydrogen bonds between cytosine and guanine, between adenine and uracil and between guanine and uracil.
The filamentous fungus Neurospora crassa is a prominent model system for understanding the control and function of cytosine methylation.
This is because cytosine can deaminate spontaneously to produce uracil through hydrolytic deamination.
Thus, in DNA, the purines adenine (A) and guanine (G) pair up with the pyrimidines thymine (T) and cytosine (C), respectively.
Common combinations with cytosine
These word pairs occur most frequently in English texts: