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Báo cáo khoa học: Acute activation of Erk1/Erk2 and protein kinase B/akt proceed by independent pathways in multiple cell types ppt

Báo cáo khoa học: Acute activation of Erk1/Erk2 and protein kinase B/akt proceed by independent pathways in multiple cell types ppt

Báo cáo khoa học: Acute activation of Erk1/Erk2 and protein kinase B/akt proceed by independent pathways in multiple cell types ppt

... FEBS Acute activation of Erk1/Erk2 and protein kinase B/akt proceed by independent pathways in multiple cell types Doris Chiu, Kewei Ma, Alexander Scott and Vincent DuronioDepartment of Medicine, ... PtdIns3K, phosphatidylinositol 3 -kinase; PKB, protein kinase B ⁄ akt; PKC, protein kinase C.4372 FEBS Journal 272 (2005) 4372–4384 ª 2005 FEBSlead to activation of downstream kinases including protein ... (1998) Involve-ment of guanosine triphosphatases and phospholipaseC-gamma2 in extracellular signal-regulated kinase, c-JunNH2-terminal kinase, and p38 mitogen-activated protein kinase activation...
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Báo cáo khoa học: Proteolytic activation of internalized cholera toxin within hepatic endosomes by cathepsin D doc

Báo cáo khoa học: Proteolytic activation of internalized cholera toxin within hepatic endosomes by cathepsin D doc

... [6,7] and an in vitro model forthe studies on intestinal and other cell types [34–37]. Onthe other hand, CT is internalized into cells by bothclathrin-dependent and -independent endocytosis and these ... diarrhea of infected humans [1]. CT interactswith intestinal epithelial cells and induces chloridesecretion due to toxin-mediated activation of adenylatecyclase and elevation of intracellular ... Adenosine diphosphateribosylation of G proteins by pertussis and cholera toxin in isolated membranes. Different requirements for and effects of guanine nucleotides and Mg2+. Mol Endocrinol1,...
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Báo cáo khoa học: A role of monocyte chemoattractant protein-4 (MCP-4)/CCL13 from chondrocytes in rheumatoid arthritis doc

Báo cáo khoa học: A role of monocyte chemoattractant protein-4 (MCP-4)/CCL13 from chondrocytes in rheumatoid arthritis doc

... patients contain increased concentrations of sev-eral chemokines, such as interleukin (IL)-8) ⁄ CXCL8,interferon-c (IFN-c)-inducible protein- 10 ⁄ CXCL10,monokine induced by interferon-c ⁄ ... poly-articular joint disease that primarily affects the smalljoints of the hands and feet [1]. It is characterized by in ltration of in ammatory cells such as monocytes and T-lymphocytes into the joints, ... process in RA. Thus, MCP-4 ⁄ CCL13 might haveroles not only in the proliferation of synovial cells butalso in the invasion of synovial cells, resulting in pan-nus formation and destruction of joints...
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Báo cáo khoa học: The properties of phosphodiesterase 11A4 GAF domains are regulated by modifications in its N-terminal domain pptx

Báo cáo khoa học: The properties of phosphodiesterase 11A4 GAF domains are regulated by modifications in its N-terminal domain pptx

... the tandem GAFdomain of PDE10, and by cGMP when linked to thetandem GAF domain of PDE2, )5or)11. The bio-chemical properties of signalling by human tandemGAF domains to cyaB1 AC were by and ... isoforms differ in terms of the length of theirN-terminal domains. Only PDE11A4 contains a com-plete N-terminal tandem GAF ensemble and an addi-tional 196 amino acid N-terminus [13]. Within ... N-terminus has twophosphorylation sites, Ser117 and Ser162 imbedded in the signature sequences RRA117S for cAMP-dependent protein kinase (cAK; RRXS) and RKA162S forcGMP-dependent protein kinase...
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Báo cáo khoa học: The binding of foot-and-mouth disease virus leader proteinase to eIF4GI involves conserved ionic interactions ppt

Báo cáo khoa học: The binding of foot-and-mouth disease virus leader proteinase to eIF4GI involves conserved ionic interactions ppt

... presence of eIF4Ebinding sequences on the eIF4G fragment and thepresence of eIF4E in the binding assay are requiredfor more efficient Lbprobinding.As a control, we examined the binding of radiola-belled ... lysine both severelydelayed eIF4GI cleavage and led to a concomitantdecrease in binding of both eIF4GI and eIF4GII.Interestingly, the introduction of a second basic resi-due (arginine in ... Lprois the most N-terminal protein on theFMDV polyprotein. Lprofrees itself by cleavage between itsown C-terminus and the N-terminus of VP4. As the initi-ation of protein synthesis on the...
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Tài liệu Báo cáo khoa học: Synergistic activation of signalling to extracellular signal-regulated kinases 1 and 2 by epidermal growth factor and 4b-phorbol 12-myristate 13-acetate pptx

Tài liệu Báo cáo khoa học: Synergistic activation of signalling to extracellular signal-regulated kinases 1 and 2 by epidermal growth factor and 4b-phorbol 12-myristate 13-acetate pptx

... number of participating protein co mplexes, cross interactions between pathways and the functioning of regulatory circuits. It is this complexitythat makes th e understanding of cellular signalling ... (1999) The repertoire of fos and jun proteins expressed during the G1 phase o f t he cell cycle isdetermined by the duration of mitogen-activated protein k inase activation. Mol . Cell Biol. 19, 3 ... of diacylglycerol-regulated protein kinase C isotypes in growth factor activation of the Raf-1 protein k inase. Mol. Cell. Biol. 17, 732–741.27. Lin, L.L., W artmann, M., Lin, A.Y., Knopf, J.L.,...
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Báo cáo khoa học: Covalent activation of heart AMP-activated protein kinase in response to physiological concentrations of long-chain fatty acids docx

Báo cáo khoa học: Covalent activation of heart AMP-activated protein kinase in response to physiological concentrations of long-chain fatty acids docx

... blockedinactivation of the AMPK by insulin (Fig. 7), suggesting adominance of the fatty acid-driven pathway for activation of AMPK over at least some aspects of insulin signalling.This dominance of ... AMPK kinase. Dephosphorylation of Thr172 (in vivo by phospho- protein phosphatase 2C [5]) leads to inactivation of AMPK.Direct allosteric activation of AMPK also occurs followingan increase in ... characteristic of the fasting state. The inclusion of fatty acids resulted in increased activities of the a-1 or the a-2 isoforms of AMP-activated protein kinase (AMPK), increased phosphoryla-tion of acetyl-CoA...
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Báo cáo khoa học: Sustained activation of ERK1/2 by NGF induces microRNA-221 and 222 in PC12 cells pdf

Báo cáo khoa học: Sustained activation of ERK1/2 by NGF induces microRNA-221 and 222 in PC12 cells pdf

... mitogen-activated protein kinase (MAPK)cascades play an essential role in transducing extra-cellular signals to cytoplasmic and nuclear effectors, and regulate a wide variety of cellular functions,including ... to be regulated by two MAPK pathways, theERK1 ⁄ 2 and c-Jun N-terminal kinase pathways, through AP-1 signaling [26]. AP-1 family proteinsare good candidates for mediating NGF-inducedmiR-221 ... regulation of cell growth. In PC12 cells, NGFstimulation of starved cells promotes cell survival and differentiation, and inhibits cell- cycle progression[16]. However, NGF-induced miR-221 and miR-222expression...
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Báo cáo khoa học: The activation of gelsolin by low pH The calcium latch is sensitive to calcium but not pH docx

Báo cáo khoa học: The activation of gelsolin by low pH The calcium latch is sensitive to calcium but not pH docx

... for much of thestructure of cells and many aspects of their motility. Actinmicrofilaments in cells are regulated by a host of actin-binding proteins [1] that act together to model them into alarge ... faithfullyreflected actin binding. The binding of gelsolin to coatedG-actin at pH 7.5 was abolished in the presence of excessEGTA (Fig. 1). This finding illustrates the specificity of binding of gelsolin under ... that induced by calcium binding. Therefore, we tested the binding of G4–6with G-actin by ELISA and fluorescence. G-actin wascoated onto plastic and increasing concentrations of G4–6(between 0 and...
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Báo cáo khoa học: Catalytic activation of human glucokinase by substrate binding – residue contacts involved in the binding of D-glucose to the super-open form and conformational transitions ppt

Báo cáo khoa học: Catalytic activation of human glucokinase by substrate binding – residue contacts involved in the binding of D-glucose to the super-open form and conformational transitions ppt

... involved in the binding of D-glucose in the super-open state (PDB identity: 1v4t). The structural imageswere generated usingPYMOL, version 0.99. Activation of glucokinase by D-glucose binding ... and plays a crucial role in the regulation of insulin secretion, and has beentermed the glucose sensor of the b -cell [2]. GK is alsoKeywordscatalytic activation; D-glucose binding;glucokinase; ... equi-librium binding of Glc alone is characterized by a hyper-bolic binding isotherm, as first determined by intrinsictryptophan fluorescence (ITF) spectroscopy of rat liverglucokinase [10]. This...
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