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Tyrosine phosphorylation of the fission yeast cdc2 + protein kinase regulates entry into mitosis

Tyrosine phosphorylation of the fission yeast cdc2 + protein kinase regulates entry into mitosis The cdc2 + protein kinase (pp34) is found to be phosphorylated on tyrosine as well as serine and threonine residues in exponentially growing Schizosaccharomyces pombe. At mitosis, the level of pp34 phosphorylation on both threonine and tyrosine residues decreases. The single detectable site of tyrosine phosphorylation in pp34 has been mapped to Tyr 15, a residue within the presumptive ATP-binding domain. Substitution of this tyrosine by phenylalanine advances cells prematurely into mitosis, establishing that tyrosine phosphorylation/dephosphorylation directly regulates pp34 function. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

Tyrosine phosphorylation of the fission yeast cdc2 + protein kinase regulates entry into mitosis

Nature , Volume 342 (6245) – Nov 2, 1989

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References (45)

Publisher
Springer Journals
Copyright
Copyright © 1989 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/342039a0
Publisher site
See Article on Publisher Site

Abstract

The cdc2 + protein kinase (pp34) is found to be phosphorylated on tyrosine as well as serine and threonine residues in exponentially growing Schizosaccharomyces pombe. At mitosis, the level of pp34 phosphorylation on both threonine and tyrosine residues decreases. The single detectable site of tyrosine phosphorylation in pp34 has been mapped to Tyr 15, a residue within the presumptive ATP-binding domain. Substitution of this tyrosine by phenylalanine advances cells prematurely into mitosis, establishing that tyrosine phosphorylation/dephosphorylation directly regulates pp34 function.

Journal

NatureSpringer Journals

Published: Nov 2, 1989

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