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Purines

purines

A series of heterocyclic compounds that are variously substituted in nature and are known also as purine bases. They include adenine and guanine, constituents of nucleic acids, as well as many alkaloids such as caffeine and theophylline. Uric acid is the metabolic end product of purine metabolism.


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Re: Is DNA living or non-living thing?? get the answer here

... Genesis From Aromaticity/H-Bonding http://universe-life.com/2011/09/30/earthlife-genesis-from-aromaticityh-bonding/ September 30, 2011 A. Purines and pyrimidines are two of the building blocks of nucleic acids. Only two purines and three pyrimidines occur widely in nucleic acids. B. Pyrimidine ...

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by Dov Henis
Fri Dec 28, 2012 4:29 pm
 
Forum: Molecular Biology
Topic: Is DNA living or non-living thing?? get the answer here
Replies: 23
Views: 45879

Molecular gene (genome) concept scientifically untenable

... self-healing strategies of the ‘master molecule’. If a base is put in wrong place during replication, there are enzymes to correct the mistake. Purines, without any errors and without any damages drop out by the thousands every day presumably due to wear and tear of existence in the chromosomes ...

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by PAWahid
Wed May 02, 2012 4:54 am
 
Forum: Molecular Biology
Topic: Molecular gene (genome) concept scientifically untenable
Replies: 12
Views: 20453

Sequencing Primers

... on gel to determine size. It is similar to restriction mapping. However, the bases do not need to be known. Dimethylsulfate is used to determine purines (G and A). Guanosine is affected more than Adenosine and gel bands appear darker on a gel. Hydrazine works for pyrimidines (C and T). Only Cystine ...

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by DougB
Mon Apr 23, 2012 6:25 pm
 
Forum: Genetics
Topic: Sequencing Primers
Replies: 4
Views: 2636

Re: Theories - Origin of Life

EarthLife [email protected] A. Purines and pyrimidines are two of the building blocks of nucleic acids. Only two purines and three pyrimidines occur widely in nucleic acids. B. Pyrimidine is a heterocyclic aromatic organic compound ...

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by Dov Henis
Fri Dec 23, 2011 7:29 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 559
Views: 755233

Generation of DNA nucleotides

... called Gout. from the Wikipedia on Gout . . . . Uric acid is a product of purine metabolism, and in humans is normally excreted in the urine. Purines are generated by the body via breakdown of cells in normal cellular turnover, and also are ingested as part of a normal diet. The kidneys are ...

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by kolean
Sun Jan 03, 2010 12:01 am
 
Forum: Molecular Biology
Topic: Generation of DNA nucleotides
Replies: 65
Views: 51426
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