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<p><a href="page.php?w=cyclin-dependent_kinase">cyclin-dependent kinase</a>s (CDKs).</p>

<p><big> Discovery </big></p>
<p>The first mitogen-activated protein kinase to be discovered was <a href="page.php?w=MAPK3">ERK1</a> (MAPK3) in mammals. Since ERK1 and its close relative <a href="page.php?w=MAPK1">ERK2</a> (MAPK1) are both involved in growth factor signaling, the family was termed "mitogen-activated". With the discovery of other members, even from distant organisms (e.g. plants), it has become increasingly clear that the name is a misnomer, since most</p><p>
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