Abstract: The present invention relates to a method for identifying nucleic acid molecules functionally associated with a desired phenotype.

Abstract: The present invention relates to the use of a HER2 protein or a nucleic acid coding therefor as a target for the modulation of the mitogen-activated protein (MAP) kinase pathway. Further, the use of a PYK2 protein and a nucleic acid coding therefor as a target for the modulation of the MAP kinase pathway is described. By inhibiting HER3 kinase activity, the phosphorylation of PYK2 and thus the stimulation of the MAP kinase pathway is inhibited. The present invention is preferably suitable for applications, particularly diagnostic or medical applications, wherein an inhibition of the MAP kinase pathway is desired. Thus, the invention relates to novel methods for diagnosing, treating or preventing MAP kinase associated disorders such as tumors.

Abstract: The present invention concerns the use of inhibitors for the treatment and/or prophylaxis of diseases which are the consequence of increased receptor tyrosine kinase activity, particularly cancer. The use is particularly directed towards inhibition or lowering of the overexpression and/or altered activity of receptor tyrosine kinases (RTKs). In particular, this altered activity of receptor tyrosine kinase can be triggered by a mutation of FGFR-4, wherein this mutation is in particular a point mutation in the transmembrane domain of FGFR-4 and leads to an exchange of a hydrophobic amino acid for a hydrophilic amino acid. The invention further concerns the use of an inhibitor directed against FGFR-4, for the treatment and/or prophylaxis of cancer. Furthermore, the invention concerns a mutated FGFR-4, which leads to overexpression and/or altered activity in cells. Finally, the invention concerns a DNA and RNA sequence of a mutated FGFR-4 molecule.

Abstract: The present invention relates, in general, to an extracellular signal regulated kinase, ERK-5.

Abstract: The present invention relates to a composition capable of inhibiting or preventing mycobacterial growth. In one embodiment of the present invention the composition comprises an inhibitor of secretory tyrosine phosphatases from mycobacteria as an active agent. In a further embodiment the composition comprises a secretory tyrosine phosphatase from mycobacteria or an immunogenic fragment thereof or a nucleic acid encoding a secretory tyrosine phosphatase from mycobacteria or an immunogenic fragment thereof.

Abstract: A novel protein tyrosine phosphatase designated PTP-S31 and its subfamily are identified, as are nucleic acid molecule coding therefor. Included in this family are PTP-S31 proteins or glycoproteins having one, two, or three identified amino acid changes in previously defined consensus sequences in the catalytic phosphatase domains of known protein tyrosine phosphatases. The PTP-S31 proteins or glycoproteins may be produced by recombinant means. Antibodies to PTP-S31 proteins or glycoproteins and nucleic acid constructs coding therefor, and methods for screening molecules which can bind to PTP-S31 proteins or glycoproteins and inhibit or stimulate their enzymatic activity, are provided.

Abstract: The present invention relates, in general, to an extracellular signal regulated kinase, ERK-5.

Abstract: The present invention features isolated, purified, or enriched nucleic acid encoding a SIRP polypeptide and isolated, purified, or enriched SIRP polypeptide and uses thereof.

Abstract: The present invention relates to MDK1 polypeptides, nucleic acids encoding such polypeptides, cells, tissues and animals containing such nucleic acids, antibodies to such polypeptides, assays utilizing such polypeptides, and methods relating to all of the foregoing.

Abstract: The present invention relates to novel modalities of treatment of diabetes, and other diseases caused by dysfunctional signal transduction by insulin receptor type tyrosine kinases (IR-PTK). Applicants discovered that IR-PTK activity may be modified by modulating the activity of a tyrosine phosphatase, and IR-PTK signal transduction may be triggered even in the absence of ligand. Methods for identifying compounds that, by modulating RPTP&agr; or RPTP&egr; activity, elicit or modulate insulin receptor signal transduction are also described.

Abstract: The present invention relates to a novel polypeptide, PTP20, and to nucleic acid molecules encoding the polypeptide. The invention also relates to nucleic acid molecules encoding portions of the phosphatase, nucleic acid vectors containing PTP20 related nucleic acid molecules, recombinant cells containing such nucleic acid vectors, polypeptides purified from such recombinant cells, antibodies to such polypeptides, and methods of identifying compounds that bind PTP20 or abrogate its interactions with natural binding partners. Also disclosed are methods for diagnosing abnormal conditions in an organism with PTP20 related molecules or compounds.

Abstract: A novel protein tyrosine phosphatase is the protein designated PTP 1D. The PTP 1D protein may be produced by recombinant means, for example using a nucleic acid construct encoding the protein as provided herein. Also disclosed is an antibody specific for an epitope of PTP 1D, protein. Methods for identifying compounds which bind to a PTP 1D protein and inhibit or stimulate its enzymatic activity, pharmaceutical compositions comprising PTP 1D, and methods for treating a disease associated with PTP 1D, and methods for treating a disease associated with PTP 1D protein using such compositions, are provided.

Abstract: The present invention features isolated, purified, or enriched nucleic acid encoding a SIRP polypeptide and isolated, purified, or enriched SIRP polypeptide and uses thereof.

Abstract: The present invention relates to novel cytoplasmic tyrosine kinases isolated from megakaryocytes (megakaryocyte kinases or MKKs) which are involved in cellular signal transduction pathways and to the use of these novel proteins in the diagnosis and treatment of disease.

Abstract: Monoclonal antibodies which bind specifically to the extracellular domain of the SIRP cell surface glycoproteins, and which, in some cases, block the interaction of SIRP with the surface molecule CD47, are described.

Abstract: The present invention relates to novel cytoplasmic tyrosine kinases isolated from megakaryocytes (megakaryocyte kinases or MKKs) which are involved in cellular signal transduction pathways and to the use of these novel proteins in the diagnosis and treatment of disease. The present invention further relates to specific megakaryocyte kinases, designated MKK1, MKK2 and MKK3, and their use as diagnostic and therapeutic agents.

Abstract: A method of inhibiting growth of tumor cells which overexpress a growth factor receptor or growth factor by treatment of the cells with antibodies which inhibit the growth factor receptor function, is disclosed. A method of treating tumor cells with antibodies which inhibit growth factor receptor function, and with cytotoxic factor(s) such as tumor necrosis factor, is also disclosed. By inhibiting growth factor receptor functions tumor cells are rendered more susceptible to cytotoxic factors.

Abstract: The present invention relates to novel cytoplasmic tyrosine kinases isolated from megakaryocytes (megakaryocyte kinases or MKKs) which are involved in cellular signal transduction pathways and to the use of these novel proteins in the diagnosis and treatment of disease.

Abstract: A novel protein tyrosine phosphatase designated PTP-S31 and its subfamily are identified, as are nucleic acid molecule coding therefor. Included in this;family are PTP-S31 proteins or glycoproteins having one, two, or three identified amino acid changes in previously defined consensus sequences in the catalytic phosphatase domains of known protein tyrosine phosphatases. The PTP-S31 proteins or glycoproteins may be produced by recombinant means. Antibodies to PTP-S31 proteins or glycoproteins and nucleic acid constructs coding therefor, and methods for screening molecules which can bind to PTP-S31 proteins or glycoproteins and inhibit or stimulate their enzymatic activity, are provided.

Abstract: The present invention relates to a novel polypeptide, PTP20, and to nucleic acid molecules encoding the polypeptide . The invention also relates to nucleic acid molecules encoding portions of the phosphatase, nucleic acid vectors containing PTP20 related nucleic acid molecules, recombinant cells containing such nucleic acid vectors, polypeptides purified from such recombinant cells, antibodies to such polypeptides, and methods of identifying compounds that bind PTP20 or abrogate its interactions with natural binding partners. Also disclosed are methods for diagnosing abnormal conditions in an organism with PTP20 related molecules or compounds.