Conversion reaction

Thiết lập các phản ứng Conversion và Equilibrium, 5 kiểu phản ứng được mô phỏng, các phản ứng có thể có trong: Tank, separator, three Phase Separator, column là những nội dung chính trong bài giảng chem 4 "Reactions". Mời các bạn cùng tham khảo nội dung bài giảng để nắm bắt thông tin chi tiết.

62p ntchung8894 11-12-2015 61 6   Download

Nhằm giúp các bạn có thêm tài liệu phục vụ nhu cầu học tập và nghiên cứu, mời các bạn cùng tham khảo nội dung bài giảng "Conversion reaction: Phản ứng chuyển hoá" dưới đây. Nội dung bài giảng cung cấp cho các bạn 5 phản ứng chuyển hóa chính, đặc điểm chung Conversion reaction, thiết lập các phản ứng Conversion reaction,... Đây là tài liệu tham khảo hữu ích cho các bạn chuyên ngành Hóa dầu.

22p ntchung8894 11-12-2015 87 4   Download

Bài giảng "Conversion reaction" trình bày về cách lựa chọn phản ứng Conversion reaction, đặc điểm chung tất cả các loại phải có hệ số tỷ lượng của phản ứng ở đầu vào, bài toán mô phỏng phản ứng chuyển hóa,... Hy vọng nội dung bài giảng phục vụ hữu ích cho các bạn.

24p ntchung8894 11-12-2015 65 5   Download

The Department of Biochemistry and Molecular Biology, 2CREST of Japan Science and Technology Corporation; 3The Department of Nephrology and Endocrinology, Faculty of Medicine, The University of Tokyo, Japan We have cloned cDNA for leukotriene B4 12-hydroxydehydrogenase (LTB 4 12-HD)/15-ketoprostaglandin 13-reductase (PGR) from guinea-pig liver. LTB4 12-HD catalyzes the conversion of LTB4 into 12-keto-LTB4 in the presence of NADP1, and plays an important role in inactivating LTB4.

9p system191 01-06-2013 42 4   Download

Isocitrate dehydrogenase (IDH) catalyzes the reversible conversion between isocitrate and 2-oxoglutarate accom-panied by decarboxylation/carboxylation and oxidoreduc-tion of NAD(P) + cofactor.While this enzyme has beenwell studiedas a catabolic enzyme in the tricarboxylicacid (TCA) cycle, here we have characterized NADP-dependent IDH fromChlorobiumlimicola, agreen sulfur bacteriumthat ®xes CO2 through the reductive tricarboxylic acid (RTCA) cycle, focusing on theCO2-®xation ability of the enzyme. ...

6p research12 23-04-2013 47 3   Download

To investigate how solubility and steric issues affect the laccase-catalysedoxidationof phenols, a series of oligomeric polyphenol compounds, having increasing size and decreasing solubility in water, was incubated with laccase. The extent of substrate conversion, and the nature of the products formed in buffered aqueous solutions, were com-pared to those obtained in the presence of an organic cosolvent, and also in the presence of twomediating species, i.e. N-hydroxyphthalimide (HPI) and 2,2,6,6-tetramethyl-piperidin-1-yloxy (TEMPO). ...

6p tumor12 22-04-2013 42 2   Download

Amyloid deposits with Arg124 mutated TGFBI protein havebeen identified inautosomal dominant blindingcorneal dystrophies.We assessedin vitrothe mechanisms determin-ing TGFBI protein amyloid transformation involving mutations of Arg124.Eight peptides synthesized following the TGFBI protein sequence, centered on codon Arg124 holding the previously reported amyloidogenic mutations and the respective controls were studied.Cys124 andHis124 mutated peptide preparations contained significantly higher amounts of amyloid than the native peptide....

8p tumor12 22-04-2013 41 2   Download

Penicillin acylase catalyses the hydrolysis and synthesis of semisyntheticb-lactam antibiotics via formation of a cova-lent acyl-enzyme intermediate. The kinetic and mechanistic aspects of these reactions were studied. Stopped-flow experiments with the penicillin and ampicillin analogues 2-nitro-5-phenylacetoxy-benzoic acid (NIPAOB) and D-2-nitro-5-[(phenylglycyl)amino]-benzoic acid (NIPGB) showed that the rate-limiting step in the conversion of penicillin G and ampicillin is the formation of the acyl-enzyme....

9p tumor12 20-04-2013 51 2   Download

Aerobic metabolism of phenylalanine in most bacteria proceeds via oxidation to phenylacetate. Surprisingly, the further metabolism of phenylacetate has not been elucida-ted, even in well studied bacteria such as Escherichia coli. The only committed step is the conversion of phenylacetate into phenylacetyl-CoA. The paaoperon ofE. coliencodes 14 polypeptides involved in the catabolismof phenylacetate. We have found thatE.

8p fptmusic 16-04-2013 38 2   Download

The active form of the oxygen sensor fumarate nitrate reductase regulator (FNR) of Escherichia colicontains a [4Fe-4S] cluster which is converted to a [2Fe-2S] cluster after reaction with air, resulting in inactivation of FNR. Reaction of reconstituted [4Fe-4S]ÆFNR with air resulted within 5 min in conversion to apoFNR. The rate was comparable to the rate known for [4Fe-4S]ÆFNR⁄[2Fe-2S]ÆFNR cluster conversion, suggesting that apoFNR is a product of [2Fe-2S]ÆFNR decomposition and a final form of air-inacti-vated FNR in vitro. ...

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Cinnamyl alcohol dehydrogenases (CAD; 1.1.1.195) catalyse the reversible conversion of p-hydroxycinnamaldehydes to their corresponding alcohols, leading to the biosynthesis of lignin in plants. Outside of plants their role is less defined. The gene for cinnamyl alcohol dehydrogenase from Helico-bacter pylori(HpCAD) was cloned in Escherichia coliand the recombinant enzyme characterized for substrate specificity. The enzyme is a monomer of 42.5 kDa found predominantly in the cytosol of the bacterium....

0p awards 06-04-2013 40 2   Download

To test thioredoxin resistance to oxidizing free radicals, we have studied the one-electron oxidation of wild-type thio-redoxin and of two forms with the point mutations D30A and W35A, using azide radicals generated byc-ray or pulse radiolysis. The oxidation patterns of wild-type thioredoxin and D30A are similar. In these forms, Trp35 is the primary target and is
repaired by one-electron reduction; first by intramolecular electron transfer from tyrosine, and then fromother residues. Conversely, duringoxidationofW35A, Trp13 is poorly reactive.

7p awards 05-04-2013 38 4   Download

Jasmonic acid and its methyl ester are ubiquitous plant sig-nalling compounds necessary for the regulation of growth and development, as well as for the response of plants to environmental stress factors. To date, it is not clear whether methyl jasmonate itself acts as a signal or if its conversion to jasmonic acid is mandatory prior to the induction of a def-ense response. We have cloned a cDNA, encoding a methyl jasmonate-cleaving enzyme, from tomato cell suspension cultures.

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UDPgalactose 4-epimerase (epimerase) catalyzes the reversible conversion between UDPgalactose and UDPglu-cose and is an important enzyme ofthe galactose metabolic pathway. TheSaccharomyces cerevisiaeepimerase encoded by theGAL10gene is about twice the size ofeither the bacterial or human protein.

7p dell39 03-04-2013 30 4   Download

The conversion of UDP-glucuronate to glucuronate, usually thought to proceed by way of glucuronate 1-phosphate, is a site for short-term regula-tion of vitamin C synthesis by metyrapone and other xenobiotics in isola-ted rat hepatocytes [Linster CL & Van Schaftingen E (2003) J Biol Chem 278, 36328–36333].

12p inspiron33 26-03-2013 43 5   Download

Human methionine synthase (hMS) is a multidomain cobalamin-dependent enzyme that catalyses the conversion of homocysteine to methionine by methyl group transfer. We report here the 1.6 A˚ crystal structure of the C-terminal activation domain of hMS.

13p galaxyss3 21-03-2013 34 3   Download

In the central nervous system, long-term adaptive responses to changes in the environment, such as the processes involved in learning and memory, require the conversion of extracellular stimuli into intracellular signals. Many of these signals involve the induction of gene expression.

6p galaxyss3 19-03-2013 41 4   Download

Tissue-type plasminogen activator (t-PA) has recently been identified as a modulator of neuronal plasticity and can initiate conversion of the pro-form of brain-derived neurotrophic factor (BDNF) into its mature form. BDNF also increases t-PA gene expression implicating t-PA as a downstream effector of BDNF function.

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4-Diphosphocytidyl-2C-methyl-d-erythritol kinase (IspE) catalyses the ATP-dependent conversion of 4-diphosphocytidyl-2C-methyl-d-erythritol (CDPME) to 4-diphosphocytidyl-2C-methyl-d-erythritol 2-phosphate with the release of ADP.

16p media19 06-03-2013 34 1   Download

The direct conversion of plant cell wall polysaccharides into soluble sugars is one of the most important reactions on earth, and is performed by cer-tain microorganisms such as Clostridium thermocellum(Ct). These organ-isms produce extracellular multi-subunit complexes (i.e. cellulosomes) comprising a consortium of enzymes, which contain noncatalytic carbohy-drate-binding modules (CBM) that increase the activity of the catalytic module.

12p media19 06-03-2013 46 4   Download