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Catalytic and kinetic mechanism of epoxide hydrolase : Thèse = thesis
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Year: 1999

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Hydrolases

Proteolytic Enzymes.
Authors: --- ---
ISBN: 1280375507 9786610375509 0585483426 9780585483429 019963663X 9780199636631 0199636621 9780199636624 Year: 2001 Publisher: Oxford : Oxford University Press,

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Like the popular first edition, this new edition of Proteolytic Enzymes emphasizes practical aspects of the handling, characterization, inhibition, and use of proteolytic enzymes giving general advice and specific examples. The text and protocols have been thoroughly updated to take account of the advances made in the last 10 years in both the increased understanding of the role of peptidases in many critical cellular processes e.g. apoptosis and new technological developments e.g. in recombinant protein expression, protein sequencing, and structural studies. The topics covered are: nomenclature and classification; purification; assay methods; determination of mechanism; inhibition and prevention of unwanted proteolytic activity; characterizing natural inhibitors; proteolytic enzymes in peptide mapping and primary structure elucidation by mass spectrometry and Edman sequencing; limited proteolysis as a structural probe; synthetic function. This book will be as invaluable as the first edition in providing ideas and protocols for scientists either studying proteases or using proteases as a research tool.


Book
Proteolytic signaling in health and disease
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ISBN: 0323856969 9780323856973 0323856977 9780323856966 Year: 2021 Publisher: Waltham, Massachusetts : Elsevier,

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"Examines biological events triggered by proteolytic enzyme activity across human development and pathologies Discusses the role of proteolytic signaling in inflammation, wound healing, and cancer, among other disease types Features methods and protocols supporting further study of proteolytic signaling events Includes chapter contributions from international leaders in the field"--


Book
Participation à la découverte de nouveaux inhibiteurs de la monoglycérol lipase : réalisation des tests cliniques

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These last years, the elucidation of the physiological roles of the anandamide and the 2-arachidonoylglycérol, two endogenous molecules derived from the arachidonic acid, made it possible to highlight a system of neurotransmission called endocannabinoid system. Among the known enzymes of the endocannabinoid system, MonoGlycerol Lipase (MGL) is one of the less characterised. It is a serine hydrolase which is responsible for the degradation of the major endocannabinoid in the central nervous system, the 2-arachidonoylglycerol (2-AG). Several studies highlighted the pharmacological properties of 2-AG, like the inhibition of the proliferation of cancerous cells of breast and prostate, the stimulation of appetite, and a neuroprotector effect following central lesions. To block the MGL would make it possible to increase the rates of 2-AG and by there, to benefit from its pharmacological properties from the therapeutic point of view such as cancer, neuroprotection and anxiety. Nevertheless, few inhibitors of MGL are known to date. My studies consist on the screening of a library of various molecules in a hydrolysis assay of a radiolabelled substrate (2-oleoylglycérol, 2-OG) by the recombining MGL human in order to identify possible inhibitors of MGL and to highlight structure-activity relationships. Secondly, to appreciate the inhibition of active compound discovered by screening, the curves of inhibition have been realized. The pIC50 of several compounds have been determined and vary between 4,46 and 6,45. In a third time, the most potent compound of each groups were tested on intact glioma cells. This last evaluation, has been realized to know if these compound were able to modify the metabolism of 2-OG by intact cells. These different steps performed to identify three groups of chemical structures favourable for the inhibition of MGL: thioamides, phenyl maleimides and disulfides. Ces dernières années, l’élucidation des rôles physiologiques de l’anandamide et du 2-arachidonoylglycérol, deux molécules endogènes dérivées de l’acide arachidonique, a permis de mettre en évidence un système de neurotransmission appelé système endocannabinoïde. Parmi les enzymes connues du système endocannabinoïde, la Monoglycérol Lipase (MGL) est une des moins caractérisées. Il s’agit d’une sérine hydrolase responsable de la dégradation de l’endocannabinoïde majeur dans le système nerveux central, le 2-arachidonoylglycérol (2-AG). Les propriétés pharmacologiques de ce dernier comprennent l’inhibition de la prolifération des cellules cancéreuses du sein et de la prostate, la stimulation de l’appétit et un effet neuroprotecteur suite à des lésions centrales. La MGL dégrade le 2-AG par clivage de son lien ester donnant respectivement le glycérol et l’acide arachidonique. Bloquer la MGL permettrait d’augmenter les taux de 2-AG et par là, profiter de ses propriétés pharmacologiques dans des perspectives thérapeutiques tels que le cancer, la neuroprotection et l’anxiété. Néanmoins, peu d’inhibiteurs de la MGL sont connus à ce jour. C’est dans ce contexte de recherche que s’inscrit mon mémoire. Il consiste au criblage d’une librairie de molécules chimiques dans un test d’hydrolyse d’un substrat radiomarqué (le 2-oléoylglycérol, 2-OG) par la MGL recombinante humaine afin d’identifier d’éventuels inhibiteurs et de tenter de mettre en évidence un lien entre structure et activité. Trois groupes de structures ont été identifiés parmi la large chimiothèque testée. Deuxièmement, afin d’apprécier la puissance des composés les plus actifs, des courbes de détermination d’IC50 ont été réalisées. Les pIC50 de plusieurs composés sont ainsi connus et varient entre 4,46 et 6,45. Dans un troisième temps, les composés les plus puissants de chacun des trois groupes ont été testés sur des cultures de gliomes. Cette dernière évaluation a permis d’évaluer si ces composés étaient capables de modifier le métabolisme du 2-OG par les cellules intactes. Ces différentes étapes ont permis de mettre en évidence trois groupes de molécules présentant un squelette de base propice à l’inhibition de la MGL : les thioamides, les maléimides et les disulfides.

Keywords

Lipase --- Cannabis --- Hydrolases --- Monoglycerides


Book
Specificity of proteolysis.
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ISBN: 3540531181 Year: 1992 Publisher: Berlin : Springer,

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Book
Application of proteolytic enzymes to protein structure studies
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Year: 1977 Publisher: Cleveland CRC Press

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Hydrolases in organic synthesis : regio- and stereoselective biotransformations
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Year: 2005 Publisher: Chichester : Wiley-Blackwell,

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Complex carbohydrates in medicine
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Year: 1989 Publisher: Sapporo, Japan : Hokkaido University School of Medicine,

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Acid proteases : structure, function, and biology.
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ISBN: 0306326957 Year: 1977 Publisher: New York Plenum

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Lipase : functions, synthesis and role in disease
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ISBN: 1620813947 9781620813942 1620813661 9781620813669 Year: 2012 Publisher: New York : Nova Biomedical, Nova Science Publishers,

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