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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.
What are the DNA pyrimidines?
Thymine and cytosine are the pyrimidine bases of DNA. Uracil is the pyrimidine base which replaces thymine in RNA.
When purine base only pairs with a pyrimidine?
This is a basic principle of DNA base pairing called Chargaff's rule. Adenine (purine) pairs with thymine (pyrimidine), while guanine (purine) pairs with cytosine (pyrimidine). This complementary base pairing is essential for the double-stranded structure of DNA.
What is a pyrimidine not found in DNA?
Uracil is a pyrimidine base that is not found in DNA. Instead, uracil is found in RNA, where it pairs with adenine, unlike DNA where thymine pairs with adenine.
Is thymine a purine?
The bases cytosine (C), thymine (T), and uracil (U), are pyrimidine derivatives. They have a six ringed structure.IN DNA, the purines adenine (A) and guanine (G) pair up with the pyrimidines thymine (T) and cytosine (C).Purines have a pyrimidine ring fused to an imidazole ring.As to the question: No, they do not. They are purines.
What is pyrimidine based in DNA?
Cytosine and thymine are the pyrimidine bases in DNA.
Where does pyrimidine synthesis occur in the body?
Pyrimidine synthesis occurs in the cytoplasm of cells in the body.
How are four bases paired in a molecule DNA?
Adenine(purine)=========thymine(pyrimidine)Guanine(purine)----------------cytosine(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.
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.
Pyrimidine base found in DNA and RNA?
Cytosine is the pyrimidine that bonds to the purine Guanine in both DNA and Rna.
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.
Pyrimidine that pairs with adenine?
Thymidine
When purine base only pairs with a pyrimidine?
This is a basic principle of DNA base pairing called Chargaff's rule. Adenine (purine) pairs with thymine (pyrimidine), while guanine (purine) pairs with cytosine (pyrimidine). This complementary base pairing is essential for the double-stranded structure of DNA.
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.
What are a purine and a pyrimidine that are capable of hydrogen bonding to form the rung structure of DNA called?
Adenine (purine) can hydrogen bond with thymine (pyrimidine), and guanine (purine) can hydrogen bond with cytosine (pyrimidine) to form the rungs of the DNA double helix structure.
