<unk> s <unk> s are the high affinity cell surface<unk> s for many polypeptide growth factors, cytokines and hormones. Of the ninety unique<unk>  kinase genes idenitified in the human genome, 58 encode<unk>  proteins.<unk> s have been shown to be not only key regulators of normal cellular processes but also to have a critical role in the development and progression of many types of cancer.
Receptor tyrosine kinase
GTPase activating protein
Serine/threonine-specific protein kinase
Magnesium transporters
Rho GTPase
Cyclin-dependent kinase
Adenylate cyclase
MAP kinase kinase kinase