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PROTEIN TYROSINE PHOSPHATASES

Annual Review of Biochemistry, 1993
The process of reversible phosphorylation is perhaps the cell's most prevalent means of regulation at the molecular level. It has been estimated that up to 30% of all cellular proteins are phosphorylated, and phosphorylation has been shown to play a crucial regulatory role in such diverse cellular events as metabolism, growth and differentiation ...
K M, Walton, J E, Dixon
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Protein tyrosine phosphatases

International Journal of Oncology, 1997
Protein tyrosine phosphatases (PTPases) balance the action of tyrosine kinases to maintain a set level of cellular tyrosine phosphorylation. Increases in tyrosine phosphorylation produced by transformation with constitutively active tyrosine kinases can initiate cellular proliferation. PTPases may act as tumor suppressors to counteract the transforming
B, Goldsmith, S, Koizumi
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