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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Yang, Q. Tonks, N. K. |
| Description | Author Affiliation: Yang Q ( Cold Spring Harbor Laboratory, NY 11724.); |
| Abstract | The polymerase chain reaction (PCR), from primers corresponding to conserved sequences within the catalytic domains of the protein-tyrosine phosphatases, was used to amplify protein-tyrosine phosphatase-related cDNAs from a HeLa cell library. After probing the same cDNA library with one of the PCR products, 10 positive clones were identified. The longest of these clones (3984 base pairs) contained 2739 base pairs of open reading frame and, after a stop codon, a 3' nontranslated segment of 1222 base pairs. A 4.3-kilobase transcript was detected by Northern blot analysis of HeLa cell poly(A)+ RNA. The open reading frame predicts a protein of 913 amino acids (approximately 104 kDa), termed PTPH1. The sequence of PTPH1 can be described in terms of three segments. (i) The N-terminal segment displays homology to the domains in the cytoskeletal-associated proteins band 4.1, ezrin, and talin that direct their association with proteins at the interface between the plasma membrane and the cytoskeleton in structures such as focal adhesions. (ii) There is a central segment bearing putative phosphorylation sites for protein-serine/threonine kinases. (iii) A segment that is homologous to the members of the protein-tyrosine phosphatase family is located at the C terminus. The structure is discussed in the light of the potential role of PTPH1 in controlling cytoskeletal integrity and the possibility that overexpression of PTPH1 may reverse transformation induced by oncogenic protein-tyrosine kinases, such as the members of the src family. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 14 |
| Volume Number | 88 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1991-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Cytoskeletal Proteins Genetics DNA Membrane Proteins Neuropeptides Phosphoprotein Phosphatases Phosphoproteins Amino Acid Sequence Animals Blood Proteins Blotting, Northern Cloning, Molecular Isolation & Purification Gene Library HeLa Cells Physiology Mice Molecular Sequence Data Oligonucleotide Probes Polymerase Chain Reaction Protein Tyrosine Phosphatase, Non-Receptor Type 3 Protein Tyrosine Phosphatases RNA, Messenger Sequence Homology, Nucleic Acid Talin Comparative Study Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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