Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A purine base, C5H5ON5, that is an essential constituent of both RNA and DNA.
from The Century Dictionary.
- noun A substance (C5H5N5O) contained in guano.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry A substance first obtained from
guano ; it is a nucleic base and pairs withcytosine inDNA andRNA .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a purine base found in DNA and RNA; pairs with cytosine
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The bird droppings, applied in a 90-minute facial, are packed with an enzyme called guanine — an amino acid which heals the skin, experts claim.
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The bird droppings, applied in a 90- minute facial, are packed with an enzyme called guanine – an amino acid which heals the skin, experts claim.
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it was thanks to the droppings, which contain an enzyme called guanine that leaves the skin clean, smooth and supple.
Beauty secret: nightingale droppings. Ann Althouse 2008
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the droppings, which contain an enzyme called guanine
Beauty secret: nightingale droppings. Ann Althouse 2008
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I’m really sorry, but I just want to scream when they call guanine and enzyme and an amino acid.
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I have spent time, too much time, trying to explain minutiae such as guanine and cytosine having 3 hydrogen bonds while adenine and thymine have two or is it the other way round when much of my class is amazed that a bean from a Goya package will grow when stuck in the ground.
SWBAT for biology this year doyle 2008
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I have spent time, too much time, trying to explain minutiae such as guanine and cytosine having 3 hydrogen bonds while adenine and thymine have two or is it the other way round when much of my class is amazed that a bean from a Goya package will grow when stuck in the ground.
Archive 2008-08-01 doyle 2008
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Furthermore, although Powner and colleagues 'synthetic sequence yields the pyrimidine ribonucleotides, it cannot explain how purine ribonucleotides (which incorporate guanine and adenine) might have formed.
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Furthermore, although Powner and colleagues 'synthetic sequence yields the pyrimidine ribonucleotides, it cannot explain how purine ribonucleotides (which incorporate guanine and adenine) might have formed.
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For 40 years, efforts to understand the prebiotic synthesis of the ribonucleotide building blocks of RNA have been based on the assumption that they must have assembled from their three molecular components: a nucleobase (which can be adenine, guanine, cytosine or uracil), a ribose sugar and phosphate.
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