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The Incyte Corporation patent solves the following problem:
Protein transport is essential for cellular function. Transport in a protein may be mediated by a peptide signal located at the amino terminal protein itself. The signal peptide consists of ten to twenty hydrophobic amino acids that target the nascent protein from ribosome to a particular membrane bound compartment such as the endoplasmic reticulum (ER). Protein target the ER to continue by way secretory or stay in any of the secretory organelles such as the ER, Golgi apparatus, or lysosomes. Proteins that transit through the secretory way be secreted into the extracellular space or left in the plasma membrane. Secreted proteins are often synthesized as inactive precursors because of the post-translation processing events during transit through the secretory way. Such events include glycosylation, phosphorylation, proteolysis, and removal of the signal peptide with a signal peptidase. The other events that occur during the transport proteins include chaperone-dependent expression and folding of nascent proteins and protein interaction with a receptor or pore complex. Examples of secreted proteins with amino terminal signal peptide described below and include the receptor, extracellular matrix molecules, cytokines, hormones, growth and diversity factor, neuropeptides, vasomediators, phosphokinases, phosphatases, phospholipases, phosphodiesterases, G and Ras-related protein, Ion channels, pedagogue / pump, proteases, and transcription factors. (Reviewed in Alberts, B. et al. (1994) Molecular Biology of the Cell, garland Publishing, New York, NY, pp. 557-560, 582-592.)
Our analysis of this patent is as follows:
Incyte Corporation’s patent US 8153398 B2 deals with Polynucleotides encoding signal peptide-containing molecules.
human invention provides signal peptide-containing proteins (HSPP) and polynucleotides which identify and encode HSPP. invention also provides expression vector, host cells, antibodies, agonists and antagonists. invention also provides methods for diagnosing, treating, or preventing diseases associated with expression of HSPP.
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