Initial analysis of the phosphoproteome of Chinese hamster ovary cells using electrophoresis.
Authors:Chen Z, Southwick K, Thulin CD
Journal:J Biomol Tech
PubMed ID:15585821
'Protein phosphorylation is a common post-translational modification of enormous biological importance. Analysis of phosphorylation at the global level should shed light on the use of this modification to regulate metabolism, signal transduction, and other processes. We have begun a proteomic analysis of phosphorylation using two-dimensional gel electrophoresis. Chinese hamster ovary ... More
Comparative proteomes of the proliferating C(2)C(12) myoblasts and fully differentiated myotubes reveal the complexity of the skeletal muscle differentiation program.
Authors:Tannu NS, Rao VK, Chaudhary RM, Giorgianni F, Saeed AE, Gao Y, Raghow R
Journal:Mol Cell Proteomics
PubMed ID:15286212
'When cultured in low serum-containing growth medium, the mouse C(2)C(12) cells exit cell cycle and undergo a well-defined program of differentiation that culminates in the formation of myosin heavy chain-positive bona fide multinucleated muscle cells. To gain an understanding into this process, we compared total, membrane- and nuclear-enriched proteins, and ... More
Characterization of dynamic and steady-state protein phosphorylation using a fluorescent phosphoprotein gel stain and mass spectrometry.
'Protein phosphorylation plays a vital role in the regulation of most aspects of cellular activity, being key to propagating messages within signal transduction pathways and to modulating protein function. Pro-Q Diamond phosphoprotein gel stain is suitable for the fluorescence detection of phosphoserine-, phosphothreonine-, and phosphotyrosine-containing proteins directly in sodium dodecyl ... More
Chronophin, a novel HAD-type serine protein phosphatase, regulates cofilin-dependent actin dynamics.
Authors:Gohla A, Birkenfeld J, Bokoch GM
Journal:Nat Cell Biol
PubMed ID:15580268
Cofilin is a key regulator of actin cytoskeletal dynamics whose activity is controlled by phosphorylation of a single serine residue. We report the biochemical isolation of chronophin (CIN), a unique cofilin-activating phosphatase of the haloacid dehalogenase (HAD) superfamily. CIN directly dephosphorylates cofilin with high specificity and colocalizes with cofilin in ... More
Determination of in vivo protein phosphorylation in photosynthetic membranes.
Authors:Vainonen JP, Vener AV, Aro EM,
Journal:Methods Mol Biol
PubMed ID:19083170
Light- and redox-controlled reversible phosphorylation of thylakoid proteins regulates short- and long-term acclimation of plants to environmental cues. The major phosphoproteins in thylakoids belong to photosystem II and its light-harvesting antenna but phosphorylation of subunits of other thylakoid protein complexes has been detected as well. The detection methods include electrophoretic ... More