Cysteine Proteinases
Mostrando 13-24 de 124 artigos, teses e dissertações.
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13. Isolamento e caracterização de um novo conjunto de serinoproteases com atividade trombina-like e de L-aminoacido oxidase do veneno de Crotalus durissus cascavella / Isolation and characterization of a new serine proteases group with thrombinin-like and L-amino acid oxidase activity from Crotalus durissus cascavella
The use of the isolated toxins from poisons as molecular tools in the understanding of diverse physiological and pathological events has been proved by some works in literature. The serpent Crotalus durissus cascavella is found in the areas of Caatinga Northeast of Brazil, since Maranhão until North of the state of Minas Gerais, and in spite of it hasn?t be
Publicado em: 2006
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14. Perspectives of digestive pest control with proteinase inhibitors that mainly affect the trypsin-like activity of Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae)
The present study describes the main characteristics of the proteolytic activities of the velvetbean caterpillar, Anticarsia gemmatalis Hübner, and their sensitivity to proteinase inhibitors and activators. Midguts of last instar larvae reared on an artificial diet were homogenized in 0.15 M NaCl and centrifuged at 14,000 g for 10 min at 4ºC and the supern
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-11
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15. Cysteine proteinases and cystatins
Nesta revisão foram descritas definições, localizações, funções e exemplos de proteinases cisteínicas e suas proteinas inibidoras em animais vertebrados e invertebrados e plantas. Tratamos principalmente com aqueles inibidores que são relatados com o mecanismo de defesa da planta contra pestes. Em adição, comentamos sobre recentes trabalhos que co
Brazilian Archives of Biology and Technology. Publicado em: 2003-01
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16. Protease activity in Giardia duodenalis trophozoites of axenic strains isolated from symptomatic and asymptomatic patients
We have examined by gelatin-SDS-PAGE the protease activity in cell lysates of Giardia duodenalis trophozoites of two axenic strains isolated in Brazil from a symptomatic patient (BTU-11) and an asymptomatic carrier (BTU-10), and the reference strain Portland 1 (P1). The proteolysis band patterns showed differences among strains isolated from asymptomatic and
Memórias do Instituto Oswaldo Cruz. Publicado em: 2003-01
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17. Proteinase activity regulation by glycosaminoglycans
There are few reports concerning the biological role and the mechanisms of interaction between proteinases and carbohydrates other than those involved in clotting. It has been shown that the interplay of enzymes and glycosaminoglycans is able to modulate the activity of different proteases and also to affect their structures. From the large number of proteas
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-02
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18. Identification, classification and expression pattern analysis of sugarcane cysteine proteinases
Proteinases cisteínicas são peptidil-hidrolases dependentes de um resíduo de cisteína em seu sítio ativo. As propriedades físico-químicas destas proteinases têm sido amplamente caracterizadas, entretanto suas funções biológicas ainda não foram completamente elucidadas. Elas estão envolvidas em um grande número de eventos, tais como: processamen
Genetics and Molecular Biology. Publicado em: 2001-12
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19. Strategies by which some pathogenic trichomonads integrate diverse signals in the decision-making process
The interaction between each one of Trichomonas vaginalis and Tritrichomonas foetus with their hosts is a complex process in which components associated to the cell surfaces of both parasites and host epithelial cells, and also to soluble components found in vaginal/urethral secretions, are involved. Either cytoadhesion or the cytotoxicity exerted by parasit
Anais da Academia Brasileira de Ciências. Publicado em: 2000-06
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20. Cysteine Proteinases and the Pathogenesis of Amebiasis
Amebiasis is a major cause of morbidity and mortality throughout the tropical world. Entamoeba histolytica is now recognized as a separate species from the morphologically identical E. dispar, which cannot invade. Cysteine proteinases are a key virulence factor of E. histolytica and play a role in intestinal invasion by degrading the extracellular matrix and
American Society for Microbiology.
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21. The reactive site loop of the serpin SCCA1 is essential for cysteine proteinase inhibition
The high-molecular-weight serine proteinase inhibitors (serpins) are restricted, generally, to inhibiting proteinases of the serine mechanistic class. However, the viral serpin, cytokine response modifier A, and the human serpins, antichymotrypsin and squamous cell carcinoma antigen 1 (SCCA1), inhibit different members of the cysteine proteinase class. Altho
The National Academy of Sciences.
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22. Th1 Cell Development Induced by Cysteine Proteinases A and B in Localized Cutaneous Leishmaniasis Due to Leishmania guyanensis
The cysteine proteinases CPA and CPB from Leishmania major induced Th1 responses in patients with leishmaniasis due to Leishmania guyanensis. Furthermore, cysteine proteinases induced neither interleukin 4 (IL-4) nor IL-13 and low levels of IL-10 in controls and patients. The results suggest that CPs would be quite good candidates for a vaccine against diffe
American Society for Microbiology.
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23. Hormonal regulation, processing, and secretion of cysteine proteinases in barley aleurone layers.
Barley aleurone layers synthesize and secrete several proteases in response to gibberellic acid (GA3). Two major cysteine proteinases designated EP-A (37,000 M(r)) and EP-B (30,000 M(r)) have been described [Koehler and Ho (1988). Plant Physiol. 87, 95-103]. We now report the cDNA cloning of EP-B and describe the post-translational processing and hormonal re
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24. Interaction of laminin with Entamoeba histolytica cysteine proteinases and its effect on amebic pathogenesis.
The Entamoeba histolytica 27-kDa cysteine proteinases exhibit striking binding specificities for immobilized laminin over other components of the extracellular matrix, such as collagen and fibronectin. Inactivation of the proteinase with the active-site inhibitor L-trans-epoxysuccinyl-leucylamido(4-guanidino)butane abolishes laminin binding by the enzyme, an