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A http://www.answers.com/topic/heterocyclic organic compound (1) containing nitrogen atoms at positions 1 and 3. Naturally occurring derivatives of the parent compound are of considerable biological importance as components of http://www.answers.com/topic/nucleic-acid and coenzymes and, in addition, synthetic members of this group have found use as pharmaceuticals. 1
See alsohttp://www.answers.com/topic/pyridoxal-phosphate; http://www.answers.com/topic/nucleic-acid.
Pyrimidine compounds which are found universally in living organisms include http://www.answers.com/topic/uracil (2), http://www.answers.com/topic/cytosine (3), and http://www.answers.com/topic/thymine (4). 2
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Together with purines these substances make up the "bases" of nucleic acids, uracil and cytosine being found characteristically in ribonucleic acids, with thymine replacing uracil in deoxyribonucleic acids. A number of related pyrimidines also occur in lesser amounts in certain nucleic acids. Other pyrimidines of general natural occurrence are http://www.answers.com/topic/orotic-acid and http://www.answers.com/topic/thiamine (vitamin B1). See alsohttp://www.answers.com/topic/deoxyribonucleic-acid; http://www.answers.com/topic/purine.
Among the sulfa drugs, the pyrimidine derivatives, http://www.answers.com/topic/sulfadiazine, sulfamerazine, and sulfamethazine, have general formula (5). 5
These agents are inhibitors of http://www.answers.com/topic/folic-acid http://www.answers.com/topic/biosynthesis in http://www.answers.com/topic/microorganism. The http://www.answers.com/topic/barbiturate are pyrimidine derivatives which possess http://www.answers.com/topic/potent depressant action on the central nervous system. See alsosulfonamide-1.
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What is pyrimidine based in DNA?
Cytosine and thymine are the pyrimidine bases in DNA.
When purine base only pairs with a pyrimidine?
when a purine base only pairs with a pyrimidine
What are the DNA pyrimidines?
Thymine and cytosine are the pyrimidine bases of DNA. Uracil is the pyrimidine base which replaces thymine in RNA.
What is a pyrimidine not found in DNA?
uracil
Does Complementary base pairing always pairs a purine with a pyrimidine?
Yes. Adenine+Guanine, or Cytosine+Thymine; each is a pyrimidine/purine pair.
What is pyrimidine based in DNA?
Cytosine and thymine are the pyrimidine bases in DNA.
When purine base only pairs with a pyrimidine?
when a purine base only pairs with a pyrimidine
What is transversion mutation?
in this a purine base is substitued in place or pyrimidine and a pyrimidine is substitued in place of purine
How are four bases paired in a molecule DNA?
Adenine(purine)=========thymine(pyrimidine)Guanine(purine)----------------cytosine(pyrimidine)
Is a pyrimidine base?
Yes, uracil is a derivative of a pyrimidine. It is also useful to note that uracil is a naturally occurring derivative.
What are the DNA pyrimidines?
Thymine and cytosine are the pyrimidine bases of DNA. Uracil is the pyrimidine base which replaces thymine in RNA.
Which nucleotide are purines and which are pyrimidine?
Thymine and Cytosine are the pyrimidine nucleotides of DNA, while Adenine and Guanine are the purine structures.
Is nitrogen a base?
A basic compound that contains nitrogen, such as a purine or pyrimidine. A basic compound that contains nitrogen, such as a purine or pyrimidine.
What DNA bases are the pyrimidines?
Thymine and cytosine are the pyrimidine bases of DNA. Uracil is the pyrimidine base which replaces thymine in RNA.
What are the pyrimidine bases of RNA?
Thymine and cytosine are the pyrimidine bases of DNA. Uracil is the pyrimidine base which replaces thymine in RNA.
Is uracil an enzyme?
No. Uracil is a Pyrimidine.
Pyrimidine that pairs with adenine?
Thymidine
