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  2. Purine - Wikipedia

    en.wikipedia.org/wiki/Purine

    Purine bases also play an essential role in many metabolic and signalling processes within the compounds guanosine monophosphate (GMP) and adenosine monophosphate (AMP). In order to perform these essential cellular processes, both purines and pyrimidines are needed by the cell, and in similar quantities.

  3. Nucleotide base - Wikipedia

    en.wikipedia.org/wiki/Nucleotide_base

    Each of the base pairs in a typical double-helix DNA comprises a purine and a pyrimidine: either an A paired with a T or a C paired with a G. These purine-pyrimidine pairs, which are called base complements, connect the two strands of the helix and are often compared to the rungs of a ladder. Only pairing purine with pyrimidine ensures a ...

  4. Purine metabolism - Wikipedia

    en.wikipedia.org/wiki/Purine_metabolism

    Purines are biologically synthesized as nucleotides and in particular as ribotides, i.e. bases attached to ribose 5-phosphate.Both adenine and guanine are derived from the nucleotide inosine monophosphate (IMP), which is the first compound in the pathway to have a completely formed purine ring system.

  5. Nucleotide - Wikipedia

    en.wikipedia.org/wiki/Nucleotide

    This nucleotide contains the five-carbon sugar deoxyribose (at center), a nucleobase called adenine (upper right), and one phosphate group (left). The deoxyribose sugar joined only to the nitrogenous base forms a Deoxyribonucleoside called deoxyadenosine, whereas the whole structure along with the phosphate group is a nucleotide, a constituent of DNA with the name deoxyadenosine monophosphate.

  6. Base pair - Wikipedia

    en.wikipedia.org/wiki/Base_pair

    Purine–pyrimidine base-pairing of AT or GC or UA (in RNA) results in proper duplex structure. The only other purine–pyrimidine pairings would be AC and GT and UG (in RNA); these pairings are mismatches because the patterns of hydrogen donors and acceptors do not correspond.

  7. Nucleic acid structure - Wikipedia

    en.wikipedia.org/wiki/Nucleic_acid_structure

    A purine base always pairs with a pyrimidine base (guanine (G) pairs with cytosine (C) and adenine (A) pairs with thymine (T) or uracil (U)). DNA's secondary structure is predominantly determined by base-pairing of the two polynucleotide strands wrapped around each other to form a double helix. Although the two strands are aligned by hydrogen ...

  8. Your Gout Guide: From Symptoms to Treatment - AOL

    www.aol.com/gout-guide-symptoms-treatment...

    Lastly, while purines are found in every cell of the body, they’re also in protein-rich foods, such as red meats, organ meats, and certain types of seafood. ... particularly at the base of your ...

  9. Hoogsteen base pair - Wikipedia

    en.wikipedia.org/wiki/Hoogsteen_base_pair

    Chemical structures for Watson–Crick and Hoogsteen A•T and G•C+ base pairs. The Hoogsteen geometry can be achieved by purine rotation around the glycosidic bond (χ) and base-flipping (θ), affecting simultaneously C8 and C1 ′ (yellow). [1] A Hoogsteen base pair is a variation of base-pairing in nucleic acids such as the A

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