Differential Regulation of Endoplasmic Reticulum Stress by Protein Tyrosine Phosphatase 1B and T Cell Protein Tyrosine Phosphatase
نویسندگان
چکیده
منابع مشابه
Differential regulation of endoplasmic reticulum stress by protein tyrosine phosphatase 1B and T cell protein tyrosine phosphatase.
Protein-tyrosine phosphatase 1B (PTP1B) and T cell protein-tyrosine phosphatase (TCPTP) are closely related intracellular phosphatases implicated in the control of glucose homeostasis. PTP1B and TCPTP can function coordinately to regulate protein tyrosine kinase signaling, and PTP1B has been implicated previously in the regulation of endoplasmic reticulum (ER) stress. In this study, we assessed...
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Protein-tyrosine phosphatase 1B (PTP-1B) is the prototypic tyrosine phosphatase whose function in insulin signaling and metabolism is well established. Although the role of PTP-1B in dephosphorylating various cell surface receptor tyrosine kinases is clear, the mechanisms by which it modulates receptor function from the endoplasmic reticulum (ER) remains an enigma. Here, we provide evidence tha...
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Protein-tyrosine phosphatase 1B (PTP1B) is a ubiquitously expressed PTP that is anchored to the endoplasmic reticulum (ER). PTP1B dephosphorylates activated receptor tyrosine kinases after endocytosis, as they transit past the ER. However, PTP1B also can access some plasma membrane (PM)-bound substrates at points of cell-cell contact. To explore how PTP1B interacts with such substrates, we util...
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Reversible phosphorylation of tyrosine residues serves as a biochemical “switch” that alters the functional properties of many proteins involved in cellular signal transduction processes.1,2 The phosphorylation status of tyrosine residues in target proteins is controlled by the opposing actions of protein tyrosine kinases that catalyze the addition of phosphoryl groups and protein tyrosine phos...
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BACKGROUND Protein-tyrosine phosphatase 1B (PTP1B) is a physiological regulator of insulin signaling and energy balance, but its role in brown fat adipogenesis requires additional investigation. METHODOLOGY/PRINCIPAL FINDINGS To precisely determine the role of PTP1B in adipogenesis, we established preadipocyte cell lines from wild type and PTP1B knockout (KO) mice. In addition, we reconstitut...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2011
ISSN: 0021-9258
DOI: 10.1074/jbc.m110.186148