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There are three pyrimidines cytosine, thymine, and uracil and two purines adenine and guanine, as shown in the figure below. ... Both contain the same purines adenine and guanine and both also contain the pyrimidine cytosine. But the fourth nucleotide in DNA is thymine, whereas RNA uses uracil to complete its quartet...
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chemed.chem.purdue.edu/genchem/topicreview/bp/1biochem/...
chemed.chem.purdue.edu/genchem/topicreview/bp/1biochem/nucleic8.html
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Base pair - Wikipedia, the free encyclopedia
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In molecular biology, two nucleotides on opposite complementary DNA or RNA strands that are connected via hydrogen bonds are called a base pair (often abbreviated bp). In the canonical Watson-Crick ...
en.wikipedia.org/wiki/Base_pair
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When molecules are broken apart in respiration, ... the heat produced is used to drive biological reactions. ... the oxygen in the compounds that are broken apart is used as an energy source.
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www.delmar.edu/nsci/jhalcomb/exam3studyquestions.htm
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Geometries of Watson-Crick and Curtis (Hoogsteen) DNA Base Pairs ... Cytosine-Guanine/Watson-Crick ... Thymine-Adenine/Hoogsteen-Curtis...
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www.ch.ic.ac.uk/motm/curtis/
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The molecular recognition and discrimination of adenine and guanine ligand moieties in complexes with proteins have been studied using empirical observations on carefully selected crystal structures.
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nar.oxfordjournals.org/cgi/content/full/29/21/4294
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SPECIAL COMMUNICATION; Modeling ischemia in vitro: selective depletion of adenine and guanine nucleotide pools ... We therefore proceeded to quantify the changes in guanine and adenine nucleotides during ischemia and recovery. In addition, because of the observed profound alterations in GTP levels, we established dynamic...
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ajpcell.physiology.org/cgi/content/full/279/4/C1270
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Question: I would like to ask about the relative nucleophilicity of the nitrogen atoms in the 7 position of guanine and adenine. In biology class, I was told that N7 of guanine is more nucleophilic (by far) than N7 of adenine.
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www.newton.dep.anl.gov/askasci/chem99/chem99065.htm
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Adenine and cytosine (which are cyclic amidines) can exist in either amino or imino forms, and guanine, thymine, and uracil (which are cyclic amides) can exist in either lactam (keto) or lactim (enol) forms.
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sandwalk.blogspot.com/2007/07/tautomers-of-adenine-cyto...
sandwalk.blogspot.com/2007/07/tautomers-of-adenine-cytosine-guanine.html
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adenine guanine, sugar phosphate backbone, guanosine triphosphate: Nucleotides are molecules useful in cells for carrying information, providing energy and transferring information from the genome to the cell. Mostly, when we speak of nucleotides, we mean components of DNA and RNA. ... More Biology Answers; Question Library;
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en.allexperts.com/q/Biology-664/2008/5/DNA-18.htm
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