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2 edition of Investigations on enzyme-catalyzed peptide synthesis found in the catalog.

Investigations on enzyme-catalyzed peptide synthesis

Jean-Marc Ricca

Investigations on enzyme-catalyzed peptide synthesis

by Jean-Marc Ricca

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Published by typescript in [s.l.] .
Written in English


Edition Notes

Thesis (Ph.D.) - University of Warwick, 1990.

Statementby Jean-Marc Ricca.
ID Numbers
Open LibraryOL20153666M

The technique of oligopeptide synthesis on a cellulose membrane and the subsequent binding assays allow the investigation of protein interactions. A particular advantage of these peptide arrays (SPOT - technology) is the high number of oligopeptide probes that can be tested in parallel. DPRA (direct peptide reactivity assay) and ADRA (amino acid derivative reactivity assay), which are based on the biological events of skin sensitization, were developed as alternatives to the controversial animal experiments. These assays are described in the OECD (Organization for Economic Co-operation and Development) guideline, Test No. C. Although these assays have been endorsed by the.

Based on the design of a highly engineered peptide ligase, we developed a fully convergent chemo-enzymatic peptide synthesis (CEPS) process for the production of thymosin-α1 via a . There has been exhaustive research on enzyme-catalyzed reactions and enzymes involved in cell metabolism. At present, different enzymes have been recognized, each of which catalyzes a different chemical reaction. catalytic action of enzymes is determined by the linear chain of amino acid residues linked via peptide bonds, which.

Examples of Enzyme-Catalyzed Reactions. Chymotrypsin is an enzyme that catalyzes the hydrolysis of peptide bonds, withsome speciÞcity for residues containing aromatic side chains. Chymotrypsin also cleaves peptide bonds at other sites, such as leucine, histidine, and glutamine, but with a lower frequency than at aromatic amino acid residues. the synthesis of small peptides, alternative enzymatic synthesis approaches are used to overcome limitations in chemical synthesis, such as lack of specificity and the high environmental burden (Tramper, ; Guzman et al., ). Enzyme-catalyzed reactions give access to a large number of peptides synthesized by different.


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Investigations on enzyme-catalyzed peptide synthesis by Jean-Marc Ricca Download PDF EPUB FB2

Investigations on enzyme-catalyzed peptide synthesis Author: Ricca, Jean-Marc ISNI: The enzymatic synthesis of leucine-enkephalinamide was carried out and tandem mass spectrometry was used to determine the composition of the reaction mixture. The last coupling step used an enzyme in an organic : Jean-Marc Ricca.

Investigations on enzyme-catalyzed peptide synthesis. Author: Ricca, Jean-Marc. ISNI: Awarding Body: University of Warwick Current Institution: University of Warwick Date of Award: Availability of Full Text: Full text unavailable from EThOS. Investigations on enzyme-catalyzed peptide synthesis.

By Jean-Marc Ricca. Get PDF (6 MB) Chymotrypsin was used to synthesize a wide range of peptides when suspended in organic solvents. This method overcame such problems as secondary hydrolysis and poor solubility in aqueous mixtures, and allowed processes to occur that were impossible in Author: Jean-Marc Ricca.

Investigations on enzyme-catalyzed peptide synthesis. (Thesis) Ricca J. Publisher: University of Warwick [] Metadata Source: The British Library Type: Thesis. Abstract.

Highlight Terms No biological terms identified No abstract supplied. Menu Formats. Abstract; Thesis at EThOS. Investigations on enzyme-catalyzed peptide synthesis Tools Ideate RDF+XML BibTeX RIOXX2 XML RDF+N-Triples JSON Dublin Core Atom Simple Metadata Refer METS HTML Citation ASCII Citation OpenURL ContextObject EndNote MODS OpenURL ContextObject in Span MPEG DIDL EP3 XML Reference Manager NEEO RDF+N3 Eprints Application Profile OAI-PMH RIOXXAuthor: Jean-Marc Ricca.

Investigations on enzyme-catalyzed peptide synthesis. By J Ricca. Abstract. SIGLEAvailable from British Library Document Supply Centre- DSC:D / BLDSC - British Library Document Supply CentreGBUnited Kingdo Topics: 06A - Investigations on enzyme-catalyzed peptide synthesis book. Peptide synthesis has come a long way from the invention of solid-phase synthesis to the present day.

Each chapter in this book portrays one major aspect of peptides including its synthesis and applications. This book is intended to provide the researchers with various new methods for the synthesis of long and difficult sequence peptides.

Amoungst his research interests are amino acids, peptides, biological active compounds, asymmetric synthesis, metal and biocatalysis as well as process chemistry. He holds about patents, about scientific publications. Since he is honorary professor for organic chemistry at the University Wurzburg, Germany.

The direct enzymatic synthesis of peptides from amino acids is widely used as a useful alternative to chemical synthesis. However, good yields of such enzyme-catalyzed reactions require altered reaction conditions to overcome the bias for hydrolysis in aqueous medium.

We argue that the synthesis/hydrolysis equilibrium can be shifted toward synthesis in aqueous medium by. peptides ranging from about 5 to 80 residues (Kimmerlin and Seebach, ).

Enzymatic synthesis is more restricted and has been hardly applied for the synthesis of peptides exceeding 10 residues.

Its potential relies on the synthesis of very small peptides and, in fact, most of the cases reported correspond to dipeptides and tripeptides (Kumar. Kuhl P, Könnecke A, Döring G, Däumer H, Jakubke HD () Enzyme-catalyzed peptide synthesis in biphasic aqueous-organic systems.

Tetrahedron Lett – CrossRef Google Scholar Lopez-Fandino R, Gill I, Vulfson EN () Enzymatic catalysis in heterogeneous mixtures of substrates: The role of the liquid phase and the effects of.

Hans‐Dieter Jakubke, Protease‐Catalyzed Peptide Synthesis: Basic Principles, New Synthesis Strategies and Medium Engineering, Journal of the Chinese Chemical Society, /jccs, 41, 4, (), (). The synthesis of modified RGD peptides and their conjugation to the pyrazine skeleton at their N-terminus are described.

To modify and alter the RGD sequence, short bioactive peptides such as FALKF and NGRG were added to the RGD N-terminus. Moreover, the in vitro investigation of these modified peptides. The book includes chapters on the biological roles of amino acids, as well as a section on enzyme-catalyzed synthesis of peptides, with suitable examples, an area often neglected in texts describing peptide synthesis.

This modern text will be of value in the amino acid, peptide and protein field, to advanced undergraduates, graduate students. Investigation of structure-activity relationship of biologically active peptides also demands the synthesis of many analogues of a given peptide.

In the beginning of 2oth century, Emil Fischer synthesized the first peptide in 8 solution. The general chemical requirements for the synthesis of peptide involve the.

We demonstrate that peptides derived from α-amino acids may be prepared in a micro reactor. The peptides were prepared in 20 min with quantitative conversion, compared to batch reactions which require prolonged reaction times. We illustrate that by using dilute reagent concentrations and short reaction times, less racemisation is observed in micro reactions than in bulk reactions.

The inversion of stereochemistry in biomolecules is catalyzed by enzymes called racemases and epimerases.

One such epimerase, isolated from the venom of the funnel-web spider Agelenopsis aperta, interconverts two peptide neurotoxins that differ only by the absolute stereochemistry at Ser Because enzymatic epimerization of peptides is otherwise unknown, the mechanism by which this occurs was.

1. Introduction. In enzyme-catalyzed peptide bond formation, freezing of the reaction mixture has been developed as an approach to suppress competitive hydrolytic reactions (for a review, see Ref.).The yield-enhancing effect of freezing in protease-catalysed peptide synthesis has been attributed to the concentration of the reactants in the remaining liquid phase which is in equilibrium.

Enzyme-catalyzed peptide macrocyclizations remain rare. Subtiligase was used to catalyze amide-bond formation between an N-terminal amine and a C-terminal ester to generate a residue cyclic peptide with 85% yield.

Thioesterase was successfully employed to cyclize linear peptides generated from the nonribosomal peptide synthetase system.

made up principally of chains of amino acids linked together by peptide bonds (Figure 1). Enzymes can be denatured and precipitated with salts, solvents and other reagents.

They have molecular weights ranging f to 2, Da. Figure 1: Typical protein structure – two amino acids joined by a peptide bond. Figure 2: Holoenzymes. Synthesis Notes aapptec Tel: Fax: [email protected] 2 aapptec Practical Guide to Solid Phase Peptide Synthesis Introduction The purpose of this guide is to provide practical information for planning and executing successful solid.This comprehensive three-volume set is the standard reference in the field of organic synthesis, catalysis and biocatalysis.

Edited by a highly experienced and highly knowledgeable team with a tremendous amount of experience in this field and its applications, this edition retains the successful concept of past editions, while the contents are very much focused on new developments in the field.

Enzyme-catalyzed peptide synthesis. At 25°C, peptide synthesis experiments were performed in polypropylene tubes in a total volume of 1 ml. Eight identical samples of ml were prepared for each peptide synthesis experiment at −3°C.

Solutions of the acyl donor ester and the nucleophilic amino component in water were adjusted to the.