This page was last modified on 6 December , at This page has been accessed 7, times. A and G are purines and T and C are pyrimdines. Matching base pairs purines and pyrimidines form hydrogen bonds. A and T have two sites where they form hydrogen bonds to each other.
C and G have three sites. For each of the four nitrogenous bases a specific tautomeric form must be incorporated for proper bonding , stability and attachment to the sugar phosphate backbone of DNA. Why do purines pair with pyrimidines? One of the important specialized pathways of a number of amino acids is the synthesis of purine and pyrimidine nucleotides.
These nucleotides are important for a number of reasons. ATP is the most commonly used source but GTP is used in protein synthesis as well as a few other reactions. Why does adenine always pair with thymine? This is because the Adenine purine base pairs only with the Thymine pyrimidine base and not with Cytosine purine base. The base pairing obeys Erwin Chargaff's rules. It's the basic genetic principle on molecular biology that we all Learn. That is Adenine bonds with thymine and guanine with cytosine.
Is adenine an amine? Adenine is a purine nucleobase with an amine group attached to the carbon at position 6. Adenine is a purine base. Adenine is a fundamental component of adenine nucleotides. What is the composition of the backbone of DNA? DNA stands for "deoxyribonucleic acid. The hydrogen bonding between complementary bases is what holds the two strands of DNA together.
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