The species-specific differences in the cAMP regulation of the tissue-type plasminogen activator gene between rat, mouse and human is caused by a one-nucleotide substitution in the cAMP-responsive element of the promoters.


In rat ovarian cells tissue-type plasminogen activator (tPA) is induced by gonadotropins, by a cAMP-dependent pathway and the induction correlates with the time of follicle rupture in vivo. However, in mice, gonadotropins induce the related but distinct protease urokinase-type plasminogen activator (uPA). Comparison of rat, mouse and human tPA genes reveal… (More)


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