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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Munshi, H. G. Liu, Yueying Moss, Natalie M. Wu, Yi I. Stack, M. Sharon |
| Description | Author Affiliation: Moss NM ( Department of Cell and Molecular Biology, Northwestern University Feinberg Medical School, Chicago, Illinois 60611, USA.) |
| Abstract | Increasing evidence suggests that the cytoplasmic tail of membrane type 1 matrix metalloproteinase (MT1-MMP) is subject to phosphorylation and that this modification may influence its enzymatic activity at the cell surface. In this study, phosphorylated MT1-MMP is detected using a phospho-specific antibody recognizing a protein kinase C consensus sequence (phospho-TXR), and a MT1-MMP tail peptide is phosphorylated by exogenous protein kinase C. To characterize the potential role of cytoplasmic residue Thr(567) in these processes, mutants that mimic a state of either constitutive (T567E) or defective phosphorylation (T567A) were expressed and analyzed for their functional effects on MT1-MMP activity and cellular behavior. Phospho-mimetic mutants of Thr(567) exhibit enhanced matrix invasion as well as more extensive growth within a three-dimensional type I collagen matrix. Together, these findings suggest that MT1-MMP surface action is regulated by phosphorylation at cytoplasmic tail residue Thr(567) and that this modification plays a critical role in processes that are linked to tumor progression. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 30 |
| Volume Number | 284 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2009-07-24 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Breast Neoplasms Enzymology Carcinoma Cell Movement Matrix Metalloproteinase 14 Genetics Metabolism Threonine Chemistry Amino Acid Sequence Animals Cell Line, Tumor Cell Proliferation Collagen Type I Cytoplasm Molecular Sequence Data Phosphorylation Point Mutation Research Support, N.I.H., Extramural Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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