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Báo cáo khoa học: Regulation of calpain B from Drosophila melanogaster by phosphorylation pot

Báo cáo khoa học: Regulation of calpain B from Drosophila melanogaster by phosphorylation pot

Báo cáo khoa học: Regulation of calpain B from Drosophila melanogaster by phosphorylation pot

... 193,886–887. Phosphorylation of < /b> calpain < /b> B L. Kova´cs et al.4972 FEBS Journal 276 (2009) 4959–4972 ª 2009 The Authors Journal compilation ª 2009 FEBS Regulation < /b> of < /b> calpain < /b> B from Drosophila melanogaster by phosphorylation La´szlo´Kova´cs1,*, ... was determined by theBradford assay [16].Protein phosphorylation In vitro phosphorylation of < /b> recombinant calpain < /b> B Eighty micrograms of < /b> recombinant, wild-type or mutated, calpain < /b> B was phosphorylated ... the regulation < /b> of < /b> the Drosophila protease can be different from the well-known mam-malian calpains.Effects of < /b> phosphorylation on the activation andactivity of < /b> calpain < /b> B Because the location of...
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Tài liệu Báo cáo khoa học: Regulation of dCTP deaminase from Escherichia coli by nonallosteric dTTP binding to an inactive form of the enzyme ppt

Tài liệu Báo cáo khoa học: Regulation of dCTP deaminase from Escherichia coli by nonallosteric dTTP binding to an inactive form of the enzyme ppt

... synthesis described above are very similar from a regulatory point of < /b> view. dCMP deaminase is activa-ted by dCTP and inhibited by dTTP and both nucleo-tides act on the enzyme by binding to an ... alsoinvestigated by equilibrium binding. This revealed ahyperbolic binding curve (Fig. 4D) with a stochiometry of < /b> 1 : 1 of < /b> dTTP bound per subunit of < /b> dCTPdeaminase.Mutational analysis of < /b> amino acid ... significance of < /b> this last observa-tion is that due to the proximity of < /b> residues 120–125 from each subunit in the centre of < /b> the trimer, the sidechains of < /b> Val122 of < /b> one subunit and Thr123 of < /b> theneighbouring...
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Tài liệu Báo cáo khoa học: Regulation of cathepsin B activity by 2A2 monoclonal antibody docx

Tài liệu Báo cáo khoa học: Regulation of cathepsin B activity by 2A2 monoclonal antibody docx

... interaction between 2A2 mAb andcathepsin B. Determination of < /b> the 2A2 mAb binding site oncathepsin B The binding site of < /b> 2A2 mAb on cathepsin B wasdetermined by SPOT analysis (SPOTs System; ... by a two-step mechanism in whichthe N-terminus of < /b> the inhibitor first binds to theenzyme, displacing the occluding loop, followed by thebinding of < /b> another two loops of < /b> the inhibitor [24].Besides ... concentration of < /b> cathepsin B ⁄ 2A2 mAb complex. Lane 1, cathepsin B (CB); lane 2, cystatin C (CC); lane 3, 2A2 mAb (mAb); lane 4,CB ⁄ mAb (1 : 0.5); lane 5, CB ⁄ CC (1 : 1); lane 6, CB ⁄ mAb ⁄ CC (1...
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Báo cáo khoa học: Modulation of amyloid-b aggregation and toxicity by inosose stereoisomers pot

Báo cáo khoa học: Modulation of amyloid-b aggregation and toxicity by inosose stereoisomers pot

... the pool of < /b> soluble, potentiallytoxic Ab species. To investigate the disassembly of< /b> fibers, three separate preparations of < /b> preformed Ab40and Ab42 fibers were incubated in the presence of< /b> varying ... inhibition of < /b> Ab olig-omerization and fiber formation. This, however, doesnot preclude any interaction with Ab. scyllo-Inosose isable to bind to Ab, as illustrated by the presence of< /b> A B Epi-1-inosose ... kinetic inhibitor of < /b> Ab42fiber formation but is unable to fully inhibit fiber for-mation. These results further suggest that allo-inositolbinds to and inhibits fibrillogenesis for Ab40 moreeffectively...
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Báo cáo khoa học: Regulation of luteinizing hormone receptor mRNA expression by mevalonate kinase – role of the catalytic center in mRNA recognition potx

Báo cáo khoa học: Regulation of luteinizing hormone receptor mRNA expression by mevalonate kinase – role of the catalytic center in mRNA recognition potx

... repre-sentative of < /b> three independent experiments. (B) The protein bandswere quantified by densitometric scanning followed by analysisusingNIH IMAGE 1.61 software (mean value ± SE).Active site of < /b> LRBP involved ... for binding,RNA mobility shift analysis was performed using[32P]-labeled LBS with all the double mutants in theabsence and presence of < /b> a 10-fold molar excess of< /b> wild-type LBS and mutant LBS ... of < /b> mevalonate based on the crystal structure of < /b> mevalonatebound to Leishmania major MVK [21]. Residues comprising the left-handed b a b motif are colored cyan. The b a b motif is disrupted by...
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Báo cáo khoa học: Deadenylation of interferon-b mRNA is mediated by both the AU-rich element in the 3¢-untranslated region and an instability sequence in the coding region pot

Báo cáo khoa học: Deadenylation of interferon-b mRNA is mediated by both the AU-rich element in the 3¢-untranslated region and an instability sequence in the coding region pot

... length of < /b> IFN -b mRNA was analysed by Northern blot, using a32P-labelled antisense IFN -b riboprobe. As a control, themembrane was hybridized with a GAPDH antisense riboprobe. (C) Total RNA of < /b> cells ... generated by in vitro transcription with T3 orSp6 polymerases. RNA was quantified by absorbance at260 nm and its integrity was verified by agarose gelelectrophoresis followed by ethidium bromide ... contained 10 lgofRNA(between 10–100 ng of < /b> the in vitro transcribed mRNAsupplemented by a carrier tRNA) and 10 lL of < /b> lipofectine ina total volume of < /b> 200 lL of < /b> serum free-medium.In both cases,...
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Báo cáo khoa học: Characterization of thermostable aminoacylase from hyperthermophilic archaeon Pyrococcus horikoshii pot

Báo cáo khoa học: Characterization of thermostable aminoacylase from hyperthermophilic archaeon Pyrococcus horikoshii pot

... (PDB ID: 1XMB). The nickel ions binding to BsbAH are shown by a pink sphere. (B) Speculated zinc-binding domain of < /b> PhoACY. Zinc ion is shown by a pink sphere. The residues related to zinc binding ... suggestingABFig. 5. Molecular model presentation of < /b> PhoACY and BsbAH. (A) Superimposition of < /b> PhoACY (blue) on BsbAH (PDB ID: 1YSJ) (yellow). Themodel of < /b> PhoACY was based on the structure of < /b> AthIAAH ... solfataricus carboxypepti-dase (UniProtKB P80092); BstACY, Bacillus stearothermophilus aminoacylase (UniProtKB P37112); BsbAH, B. subtilis putative amidohydro-lase (UniProtKB P54955); AthIAAH,...
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Báo cáo khoa học: Implication of calpain in neuronal apoptosis A possible regulation of Alzheimer’s disease doc

Báo cáo khoa học: Implication of calpain in neuronal apoptosis A possible regulation of Alzheimer’s disease doc

... cleavage of < /b> Bid by calpain < /b> andformation of < /b> truncated Bid (tBid) leading to(2a) direct release of < /b> cytochrome c and ⁄ or( 2b) permeabilization of < /b> mitochondrial outermembrane, translocation of < /b> calpain < /b> ... illustrating the regulation < /b> of< /b> Bcl-2 family proteins, cytochrome c releaseand apoptosis by calpains. (1) Cleavage of< /b> Bax by calpain,< /b> formation of < /b> truncated Bax(tBax) and stimulation of < /b> cytochrome crelease; ... primates. Prog Neurobiol 62 , 273–295.13 Kubbutat MH & Vousden KH (1997) Proteolytic clea-vage of < /b> human p53 by calpain:< /b> a potential regulator of< /b> protein stability. Mol Cell Biol 17, 460–468.14...
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Tài liệu Báo cáo khoa học: Regulation of DNA fragmentation: the role of caspases and phosphorylation doc

Tài liệu Báo cáo khoa học: Regulation of DNA fragmentation: the role of caspases and phosphorylation doc

... dissociation of < /b> Bax and Bad from 14-3-3 is pro-moted by JNK via phosphorylation of < /b> 14-3-3 atSer184; this reduces the affinity of < /b> 14-3-3 for Bax andBad and translocation of < /b> Bax and Bad to mitochon-dria ... Bcl-xL, Bcl-w, Mcl-1 and A1), pro-apoptoticproteins (Bax, Bak and Bok) and BH3-only proteins(Bad, Bid, Bik, Blk, Hrk, BNIP3 and BimL). Bcl-2family proteins mostly mediate the activity of < /b> otherproteins ... Inactivated Bax isphosphorylated at Ser184 by the physiological Baxkinase Akt, and heterodimerizes with antiapoptoticBcl-2 family members such as Bcl-xL [83]. Activation of < /b> Bax by dephosphorylation...
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Tài liệu Báo cáo khoa học: Regulation of the members of the mammalian heat shock factor family doc

Tài liệu Báo cáo khoa học: Regulation of the members of the mammalian heat shock factor family doc

... DNA-binding activity isincreased, but the amount of < /b> HSF2 protein simultaneously decreases, at least in part, because of < /b> enhanced ubiquitination by the E3 ligaseAPC ⁄ C followed by degradation by ... capacity of < /b> HSF1 isrepressed through a negative-feedback loop via binding of < /b> HSPs.The DNA-binding activity of < /b> HSF1 is inhibited by acetylation of < /b> sev-eral lysines, including K80, within the DBD. ... activation cycle of < /b> HSF1, bothDNA-binding and transcriptional activities must beattenuated (Fig. 1B) . The attenuation mechanism can-not be explained solely by the negative-feedback loop,because an...
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