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Báo cáo khoa học: The catalytic significance of the proposed active site residues in Plasmodium falciparum histoaspartic protease ppt

Báo cáo khoa học: The catalytic significance of the proposed active site residues in Plasmodium falciparum histoaspartic protease ppt

Báo cáo khoa học: The catalytic significance of the proposed active site residues in Plasmodium falciparum histoaspartic protease ppt

... histoaspartic protease FEBS Journal 275 (2008) 1698–1707 ª 2008 The Authors Journal compilation ª 2008 FEBS 1707 The catalytic significance of the proposed active site residues in Plasmodium falciparum histoaspartic ... interaction between the main chain oxygen of Ala216 and the e-amine of Lys78. In H34A mutant (Fig. 6B), the interactionbetween the imidazole ring and Asp214 disappearedand the side chain of Asp214 is ... placing Lys78 in a position that can compensate for the loss of His34 which allows for the interaction with the lytichydroxyl in the active site. Interestingly, residue 78 in most aspartic proteases...
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Báo cáo khoa học: Properties and significance of apoFNR as a second form of air-inactivated [4Fe-4S]ÆFNR of Escherichia coli pot

Báo cáo khoa học: Properties and significance of apoFNR as a second form of air-inactivated [4Fe-4S]ÆFNR of Escherichia coli pot

... cleaves the protein at the C-terminal site of arginine and lysine, and the tryptic digest of FNR ispredicted to contain the four N-terminal Cys residues in the peptide comprising amino acids ... form of air-inacti-vated FNR in vitro. Formation of apoFNR and the redox state of the cysteinyl residues were determined in vitro by alkylation. FNR contains fivecysteinyl residues, four of which ... of apoFNR shouldbe relevant for function and properties of the protein.Therefore the redox state of the cysteinyl residues of the various forms of apoFNR – ‘aerobic’ and ‘anaer-obic’ apoFNR,...
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Báo cáo khoa học: An a-proteobacterial type malate dehydrogenase may complement LDH function in Plasmodium falciparum Cloning and biochemical characterization of the enzyme potx

Báo cáo khoa học: An a-proteobacterial type malate dehydrogenase may complement LDH function in Plasmodium falciparum Cloning and biochemical characterization of the enzyme potx

... and cofactor binding sites and important amino acid residues lining these pockets. The active site amino acid residues involved in substrate b inding were con served in Pf MDH but the N-terminal ... n the parasite. The brok en lines/arrows show inhibition a nd the double lines/arrows indicate induction of the enzyme/enzymatic reaction in the presence of gossypol the LD H/MDH inhibitor. The ... for regions of proteins whose Ca distances best fit those of the selectedregion of the protein being studied, while meeting the additional constraint of having the specified number of Ó FEBS 2004...
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Tài liệu Báo cáo khoa học: Suppressed catalytic efficiency of plasmin in the presence of long-chain fatty acids Identification of kinetic parameters from continuous enzymatic assay with Monte Carlo simulation ppt

Tài liệu Báo cáo khoa học: Suppressed catalytic efficiency of plasmin in the presence of long-chain fatty acids Identification of kinetic parameters from continuous enzymatic assay with Monte Carlo simulation ppt

... presence of kringle 5 in the structure of the protease; miniplasmin (des-kringle 1-4 plasmin) is assensitive to fatty acids as plasmin, whereas the activity of microplasmin(des-kringle 1-5 plasmin) ... of three models for the catalytic action of plas-min in the presence of stearate. The p-nitroaniline (P) released in the course of hydrolysis of 40 lM Spectrozyme-PL by 20 nM plas-min in the ... activity of two truncated plasmin variants was examined(Fig. 8). Miniplasmin (des-kringle 1-4 plasmin) con-tains the kringle 5 and the catalytic domain of plas-min, whereas microplasmin (des-kringle...
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Báo cáo khoa học: Kinetic and crystallographic analyses of the catalytic domain of chitinase from Pyrococcus furiosus – the role of conserved residues in the active site pdf

Báo cáo khoa học: Kinetic and crystallographic analyses of the catalytic domain of chitinase from Pyrococcus furiosus – the role of conserved residues in the active site pdf

... compilation ª 2010 FEBS 2695Kinetic and crystallographic analyses of the catalytic domain of chitinase from Pyrococcus furiosus – the role of conserved residues in the active site Hiroaki Tsuji1, ... 2010)doi:10.1111/j.1742-4658.2010.07685.x The hyperthermostable chitinase from the hyperthermophilic archaeonPyrococcus furiosus has a unique multidomain structure containing two chi-tin-binding domains and two catalytic domains, ... residue. In these interac-tions, we particularly focused on the Trp664 residue,which is located at the bottom of the active site cleft. The indole ring of Trp664 is hydrophobically stackedwith the...
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Tài liệu Báo cáo khoa học: Structural and functional studies of the human phosphoribosyltransferase domain containing protein 1 docx

Tài liệu Báo cáo khoa học: Structural and functional studies of the human phosphoribosyltransferase domain containing protein 1 docx

... N7 (Fig. 1C). The 2¢OH of the ribose is hydro-gen bonded to the main chain and the side chain of Asp142 (Fig. 1C). Both hydroxyl groups of the riboseare involved in coordinating a putative ... has a Gly in the position of the proposed catalytic Asp of HPRT. In PRTFDC1, a water molecule at the position of the aspartic acid side chain position in HPRT might beresponsible for the low activity ... solutions. The ligandbound was interpreted as GMP because the N2 of the base makes a hydrogen bond to a main chain car-bonyl. Binding of a xanthine base from XMP in the same position, would lead to the...
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Tài liệu Báo cáo khoa học: Identification and characterization of the transcription factors involved in T-cell development, t-bet, stat6 and foxp3, within the zebrafish, Danio rerio docx

Tài liệu Báo cáo khoa học: Identification and characterization of the transcription factors involved in T-cell development, t-bet, stat6 and foxp3, within the zebrafish, Danio rerio docx

... adjacent DNA-binding sites,a coiled-coil STAT protein all-alpha domain, which isimplicated in other protein–protein interactions, aSTAT protein DNA-binding domain and an SH2domain, which binds phosphorylated ... all-alpha domain, STATprotein DNA-binding domain and SH2 domain of stat6, and the zinc-finger domain, leucine-zipperdomain and fork-head domain of foxp3. In addition,for stat6 and foxp3, there were ... the inducible chain of the IL-12 receptor (IL-12Rb2).Binding of IL-12 to its receptor induces signallingthrough STAT4, which further enhances IFN-c pro-duction and induces the expression of...
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Tài liệu Báo cáo khoa học: Post-translational modification of the deubiquitinating enzyme otubain 1 modulates active RhoA levels and susceptibility to Yersinia invasion pptx

Tài liệu Báo cáo khoa học: Post-translational modification of the deubiquitinating enzyme otubain 1 modulates active RhoA levels and susceptibility to Yersinia invasion pptx

... strains [3]. PathogenicYersiniae are typically taken up through ingestion andfirst reach the intestine. The Yersinia surface proteininvasin binds to b1 integrins on the apical surface of M ... In addition to actin, other host cell proteins have beenshown to bind to the virulence factor YpkA, includingOTUB1 [13]. In order to investigate the role of OTUB1 in Yersinia invasion of HEK293T cells, ... serine ⁄ threonine kinasethat phosphorylates actin [12], binds the deubiquitinat-ing enzyme otubain 1 (OTUB1) [13,14], the smallG protein subunit Gaq [15] and interacts with mem-bers of the...
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Tài liệu Báo cáo khoa học: Post-translational modifications of the linker histone variants and their association with cell mechanisms docx

Tài liệu Báo cáo khoa học: Post-translational modifications of the linker histone variants and their association with cell mechanisms docx

... number of these modifications is low, the density of modifications is much the same as in the rest of the lin-ker histones. It is the shortness of the N-terminal tailsTable 1. Alignment of chicken, ... the triphosphate form being incorpo-rated into DNA in place of the natural base cytosine[12]. The use of such analogues results in the globaldepletion of DNMTs and a subsequent reduction in DNA ... found in the 5¢-region of approximately 60% of genes, near to their promoters[4,5]. The cytosine base is modified at the 5-carbonposition of the pyrimidine ring by the covalent addi-tion of a...
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Tài liệu Báo cáo khoa học: SREBPs: physiology and pathophysiology of the SREBP family ppt

Tài liệu Báo cáo khoa học: SREBPs: physiology and pathophysiology of the SREBP family ppt

... focusing on the molecular mechanisms by whichSREBPs are involved in lipotoxicity. SREBPs directlyrepress the transcription of insulin receptor substrate-2(IRS-2), the main insulin signaling ... apparatus, where the site 1 and site 2 proteases cleave the SREBPs [3,4].Upon restoration of cellular cholesterol, Insig, anotherkey regulator of ER membrane proteins, traps andretains the SREBP–SCAP ... molecule in the liverand pancreatic b-cells [8,26]. Suppression of IRS-2 bySREBP-1c in the liver inhibits processes regulatinginsulin signaling, such as glycogen synthesis, and con-tributes to the...
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