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Protein Phosphatases in Plants
Annual Review of Plant Biology, 2003Phosphorylation and dephosphorylation of a protein often serve as an “on-and-off” switch in the regulation of cellular activities. Recent studies demonstrate the involvement of protein phosphorylation in almost all signaling pathways in plants. A significant portion of the sequenced Arabidopsis genome encodes protein kinases and protein phosphatases ...
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Phosphotyrosyl-Protein Phosphatases
1983Extensive genetic evidence indicates that the protein product of a single gene of RNA tumor viruses is responsible for the transformation of virus-infected cells to the malignant state (Hanafusa 1977; Duesberg and Bister 1981; Bishop and Varmus 1982; Linial and Blair 1982; Varmus 1982).
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The Structure And Regulation Of Protein Phosphatases
Annual Review of Biochemistry, 1989Four major serine/threonine-specific protein phosphatase catalytic subunits are present in the cytoplasm of animal cells. Three of these enzymes, PP-1, PP-2A, and PP-2B, are members of the same gene family, while PP-2C appears to be distinct. PP-1, PP-2A, and PP-2B are complexed to other subunits in vivo, whereas PP-2C has only been isolated as a ...
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Science's STKE, 2005
This Teaching Resource provides lecture notes and slides for a class covering the structure and function of protein phosphatases and is part of the course "Cell Signaling Systems: A Course for Graduate Students." The lecture begins with a discussion of the importance of phosphatases in physiology, recognized by the award of a Nobel Prize in 1992, and ...
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This Teaching Resource provides lecture notes and slides for a class covering the structure and function of protein phosphatases and is part of the course "Cell Signaling Systems: A Course for Graduate Students." The lecture begins with a discussion of the importance of phosphatases in physiology, recognized by the award of a Nobel Prize in 1992, and ...
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Protein phosphatase 2Bw and protein phosphatase Z are Saccharomyces cerevisiae enzymes
Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression, 1991cDNAs encoding three protein phosphatases, termed PP2Bw (Da Cruz e Silva, E.F. and Cohen, P.T.W. (1989) Biochim. Biophys. Acta 1009, 293-296), PPZ1 and PPZ2 that have been isolated from a Clontech 'rabbit brain' library are shown to be Saccharomyces cerevisiae clones.
Silva, E.F. Da Cruz e +4 more
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European Journal of Biochemistry, 1984
Antibody prepared against the catalytic subunit of protein phosphatase-2A from rabbit skeletal muscle, could completely inhibit this enzyme, but did not significantly affect the activities of protein phosphatases-1, 2B and 2C. The antibody was used to establish the following points.
S, Alemany +4 more
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Antibody prepared against the catalytic subunit of protein phosphatase-2A from rabbit skeletal muscle, could completely inhibit this enzyme, but did not significantly affect the activities of protein phosphatases-1, 2B and 2C. The antibody was used to establish the following points.
S, Alemany +4 more
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Protein phosphatases are pest containing proteins
IUBMB Life, 1997AbstractProtein phosphatases are required for removing phosphoryl groups in proteins involved in many physiological processes. Investigation of these enzymes for regions rich in proline (P), glutamic acid (E), serine (S) and threonine (T), called PEST regions showed that greater than 85% of the phosphatases investigated contained these regions.
A V, Gomes, J A, Barnes
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The protein phosphatases involved in cellular regulation
European Journal of Biochemistry, 1985The effects of polyamines on the oligomeric forms of protein phosphatase‐1 (1G), protein phosphatase‐2A (2A0, 2A1 and 2A2) and their free catalytic subunits (1C and 2AC) has been studied using homogeneous enzymes isolated from rabbit skeletal muscle. Spermine increased the activity of protein phosphatase‐2A towards eight of nine substrates tested. Half‐
H Y, Tung +4 more
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Viral protein kinases and protein phosphatases
Pharmacology & Therapeutics, 1993Certain large DNA viruses (e.g. herpesviruses and poxviruses) encode proteins related to cellular protein-serine/threonine kinases, and Hepatitis B virus and vesicular stomatitis virus may encode structurally different protein kinases. Other viruses activate cellular protein kinases, e.g. interferon-induced eukaryotic initiation factor-2 kinase, growth
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