Nutritionists have long known that some green vegetables, particularly leafy vegetables, such as spinach, are high in
purines, and have consequently recommended that patients with gout reduce their consumption of these vegetables.
Microbial nitrogen (g/d) = =70X / (0.83 x 0.116 x 1,000) =0.727 X where 0.83: digestibility coefficient for microbial
purines, 70: nitrogen content of
purines (mg/mmol), 0.116: proportion of nitrogen in
purines relative to total nitrogen in microbial mass.
High
purine diet (red meat, poultry, offal, seafood, pulses, soya, yeast).
Green peas, asparagus, cauliflower, beans, and spinach are high in
purines. Carrots and other vegetables, as well as fruit juices, are low in
purines.
Beer contains
purines such as guanosine that can be degraded to urate.
The damaged bases could be chiefly
purines or formamidopyrimidines.
A relatively simple method of preparing substituted
purines was developed and used to synthesize eight different 6-thiopurine analogs.
Purines are key building blocks for the synthesis of DNA and RNA and are involved in a variety of other cellular processes.
Carbonaceous meteorites contain over 70 amino acids, some heterocyclic compounds, including
purines, and carboxylic acids.
Uric acid is a substance that results from the breakdown of
purines or waste products in the body.
They started with a palindromic sequence of 24 nucleotides: The order of
purines and pyrimidines reads the same from either end of the strand.