Results 21 to 30 of about 18,289 (229)

The cell surface receptor Tartan is a potential in vivo substrate for the receptor tyrosine phosphatase Ptp52F [PDF]

open access: yes, 2009
Receptor-linked protein-tyrosine phosphatases (RPTPs) are essential regulators of axon guidance and synaptogenesis in Drosophila, but the signaling pathways in which they function are poorly defined.
Bugga, Lakshmi   +2 more
core   +2 more sources

Use of intein-mediated phosphoprotein arrays to study substrate specificity of protein phosphatases

open access: yesBioTechniques, 2007
Synthetic peptides incorporating various chemical moieties, for example, phosphate groups, are convenient tools for investigating protein modification enzymes, such as protein phosphatases (PPs). However, short peptides are sometimes poor substrates, and
Samvel Kochinyan   +5 more
doaj   +1 more source

The Discodermia calyx Toxin Calyculin A Enhances Cyclin D1 Phosphorylation and Degradation, and Arrests Cell Cycle Progression in Human Breast Cancer Cells

open access: yesToxins, 2011
Cyclin D1 is a key regulator of the cell cycle that is over expressed in more than half of breast cancer patients. The levels of cyclin D1 are controlled primarily through post-translational mechanisms and phosphorylation of cyclin D1 at T286 induces its
David L. Brautigan, Jessica R. Edelson
doaj   +1 more source

Regulation of PP2A, PP4, and PP6 holoenzyme assembly by carboxyl-terminal methylation

open access: yesScientific Reports, 2021
The family of Phosphoprotein Phosphatases (PPPs) is responsible for most cellular serine and threonine dephosphorylation. PPPs achieve substrate specificity and selectivity by forming multimeric holoenzymes. PPP holoenzyme assembly is tightly controlled,
Scott P. Lyons   +4 more
doaj   +1 more source

Protein phosphatase 5 regulates titin phosphorylation and function at a sarcomere-associated mechanosensor complex in cardiomyocytes. [PDF]

open access: yes, 2018
Serine/threonine protein phosphatase 5 (PP5) is ubiquitously expressed in eukaryotic cells; however, its function in cardiomyocytes is unknown. Under basal conditions, PP5 is autoinhibited, but enzymatic activity rises upon binding of specific factors ...
Beckendorf, Lisa   +10 more
core   +3 more sources

Phosphatase Protection Assay: 14-3-3 Binding Protects the Phosphate group of RSG from λ Protein Phosphatase

open access: yesBio-Protocol, 2015
14-3-3 proteins regulate diverse cellular processes in eukaryotes by binding to phospho-serine or threonine of target proteins. One of the physiological functions of 14-3-3 is to bind and protect phosphate groups of the target proteins against ...
Takeshi Ito, Yohsuke Takahashi
doaj   +1 more source

Endogenous inhibitor proteins that connect Ser/Thr kinases and phosphatases in cell signaling. [PDF]

open access: yes, 2012
Protein phosphatase activity acts as a primary determinant of the extent and duration of phosphorylation of cellular proteins in response to physiological stimuli. Ser/Thr protein phosphatase-1 (PP1) belongs to the PPP superfamily, and is associated with
Brautigan, David L, Eto, Masumi
core   +2 more sources

Quantum-based modeling implies that bidentate Arg89-substrate binding enhances serine/threonine protein phosphatase-2A(PPP2R5D/PPP2R1A/PPP2CA)-mediated dephosphorylation

open access: yesFrontiers in Cell and Developmental Biology, 2023
PP2A-serine/threonine protein phosphatases function as heterotrimeric holoenzymes, composed of a common scaffold (A-subunit encoded by PPP2R1A/PPP2R1B), a common catalytic (C-subunit encoded by PPP2CA/PPP2CB), and one of many variable regulatory (B ...
E. Alan Salter   +3 more
doaj   +1 more source

Large-scale phosphoproteome analysis in seedling leaves of Brachypodium distachyon L. [PDF]

open access: yes, 2014
BACKGROUND: Protein phosphorylation is one of the most important post-translational modifications involved in the regulation of plant growth and development as well as diverse stress response. As a member of the Poaceae, Brachypodium distachyon L.
Ai-Qin Gu   +7 more
core   +1 more source

Cytokine-stimulated Phosphoflow of PBMC Using CyTOF Mass Cytometry

open access: yesBio-Protocol, 2015
Phosphorylation of tyrosine, serine, and threonine residues is critical for the control of protein activity involved in various cellular events. An assortment of kinases and phosphatases regulate intracellular protein phosphorylation in many different ...
Rosemary Fernandez, Holden Maecker
doaj   +1 more source

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