Mercaptopurine (6-MP) competes with hypoxanthine and guanine for the enzyme hyphoxanthine-guanine phosphoribosyltransferase (HGPRTase) and is itself converted to thioinosinic acid (TIMP).

If the compound is a purine derivative, the purine moiety can be guanine or hypoxanthine.

If the compound is a purine derivative, the purine moiety can be guanine or hypoxanthine.

It is caused by a deficency in the hypoxanthine-guanine phosphoribosiltransferase(HPRT).

It is created from hypoxanthine by xanthine oxidoreductase.

A purine nucleoside that has hypoxanthine linked by the N9 nitrogen to the C1 carbon of ribose.

It is a purine nucleoside that has hypoxanthine linked by the N9 nitrogen to the C1 carbon of ribose.

Compositions and methods for enhanced protein production provide cells deficient in hypoxanthine-guanine phosphoribosyltransferase.

Inosine is a purine nucleoside that has hypoxanthine linked by the N9 nitrogen to the C1 carbon of ribose.

Purines are first converted to hypoxanthine, then to xanthine, and finally to uric acid.

The increased xanthine and hypoxanthine in the urine have not been accompanied by problems of nephrolithiasis.

Purines are converted to hypoxanthine, then to xanthine and finally, to uric acid.

They also found hypoxanthine and xanthine, which don't factor in to DNA but are used in other biological functions.

This enzyme is required for the conversion of hypoxanthine, xanthine, and guanine to their respective nucleotides.

It contains, by dispersal therethrough, an active ingredient selected from the group consisting of xanthine, hypoxanthine, theophylline, 7-theophylline acetic acid, caffeine, and theobromine.