Cysteine Proteinases
Mostrando 1-12 de 124 artigos, teses e dissertações.
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1. Reactivity of sera from dogs living in a leishmaniasis-endemic area to the COOH-terminal region of cysteine proteinase B
ABSTRACT Cysteine proteinases are well-known virulence factors of Leishmania spp. with demonstrated actions in both experimental mouse infection and human infection. However, studies on these enzymes in canine leishmaniasis are scarce. Here, we show, for the first time, the reactivity of sera from dogs living in an endemic area to a recombinant protein from
Braz J Infect Dis. Publicado em: 2020-06
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2. An in silico Study of Benzophenone Derivatives as Potential Non-Competitive Inhibitors of Trypanosoma cruzi and Leishmania Amazonensis Cysteine Proteinases
This study investigates the mechanisms of interaction between benzophenone derivatives and cruzain and Llacys1 (the protein expressed by cysteine protease gene isoform 1 of L. amazonensis) by homology modelling, docking and molecular dynamics simulation. The results predict that the same binding site in cruzain and Llacys1 is involved in complexes with benzo
J. Braz. Chem. Soc.. Publicado em: 2018-03
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3. Influence of air temperature on proteinase activity and beverage quality in Coffea arabica
Fruits were collected from trees of Coffea arabica cv. Obatã grown at Mococa and Adamantina in São Paulo State, Brazil, which are regions with marked differences in air temperature that produce coffee with distinct qualities. Mococa is a cooler location that produces high-quality coffee, whereas coffee from Adamantina is of lower quality. The amino acid an
Braz. J. Bot.. Publicado em: 2012
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4. Caracterização de proteinases envolvidas na geração de peptídeos antimicrobianos no intestino de Rhipicephalus (Boophilus) microplus. / CE. Characterization of proteinases involved in the generation of antimicrobial peptides in the gut of Rhipicephalus (Boophilus) microplus.
It is known that hemoglobin is a rich source of antimicrobial peptides (hemocidins). The first hemoglobin-derived hemocidin characterized in ticks was the peptide Hb33-61, which is active against Gram-positive bacteria and fungi. It is believed that hemocidins are endogenously generated in the tick gut. In this work we biochemically characterized a cathepsin
Publicado em: 2010
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5. Anti-oxidative and proteolytic activities and protein profile of laticifer cells of Cryptostegia grandiflora, Plumeria rubra and Euphorbia tirucalli
In this study, proteins extracted from laticifer cells of three plants were examined by electrophoresis, mass spectrometry (MALDI-TOF) and characterized in respect of proteolytic, chitinolytic and anti-oxidative activities by means of zymography and colorimetric assays. Acidic proteins with molecular masses between 12.5 and 74.5 kDa predominated in laticifer
Brazilian Journal of Plant Physiology. Publicado em: 2010
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6. Potential of laticifer fluids for inhibiting Aedes aegypti larval development: evidence for the involvement of proteolytic activity
It has been shown previously that the laticifer fluid of Calotropis procera (Ait.) R.Br. is highly toxic to the egg hatching and larval development of Aedes aegypti L. In the present study, the larvicidal potential of other laticifer fluids obtained from Cryptostegia grandiflora R.Br., Plumeria rubra L. and Euphorbia tirucalli L. was evaluated. We attempted
Memórias do Instituto Oswaldo Cruz. Publicado em: 2009-09
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7. Estrutura e função das cisteína proteinases intestinais do besouro Tenebrio molitor / Structure and function of intestinais cysteine proteinases of Tenebrio molitor beetle
A catepsina L é uma cisteína proteinase da família da papaína (clã CA, família C1), sendo esta família a mais conhecida entre as cisteína proteinase. A catepsina L, como outras proteinases da família C1, é sintetizada como uma pró-enzima inativa que é ativada através da remoção do pró-peptídeo. Os pró-peptídeos das catepsinas da subfamíli
Publicado em: 2009
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8. Expression of schistosomal cathepsin l1 in Escherichia coli and evaluation of its protective capacity in an animal challenge
Schistosomes utilize proteinases to accomplish several activities such as tissue penetration, tissue digestion and evasion of host immune responses. Cathepsin L is a cysteine proteinase of the papain superfamily detected in their gut lumen which indicates that this enzyme contributes to the proteolysis of ingested hemoglobin. Due to the roles played in the s
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2009
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9. Trypanosoma cruzi: a stage-specific calpain-like protein is induced after various kinds of stress
Calpains are calcium-dependent cysteine proteinases found in all living organisms and are involved in diverse cellular processes. Calpain-like proteins have been reported after in silico analysis of the Tritryps genome and are believed to play important roles in cell functions of trypanosomatids. We describe the characterization of a member of this family, w
Memórias do Instituto Oswaldo Cruz. Publicado em: 2008-09
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10. Cisteína-proteinases em promastigotas de Leishmania (Viannia) braziliensis. / Cysteine-proteinases in promastigotes of Leishmania (Viannia) braziliensis.
No presente trabalho foram detectadas cisteína-proteinases (CPs) em promastigotas infectivas de Leishmania (Viannia) braziliensis. A estratégia de purificação consistiu na associação do método de extração por Triton X-114 com cromatografia em coluna de Concanavalina A-Sepharose, seguida por outra de DEAE-Sephacel. No ensaio das cromatografias, obser
Publicado em: 2008
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11. Intestinal molecular physiology of Dysdercus peruvianus (Hemiptera) / Fisiologia molecular intestinal de Dysdercus Peruvianus (Hemiptera)
After identification of cathepsins L in vitro assays and in zimograms we began to purify this enzyme in insect midgut. The region V2 was selected as a source of material for purifying a cysteine proteinase because it contains most of the activity of that proteinase. After several attempts to purify this proteinase, an effective process was developed that avo
Publicado em: 2008
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12. Analysis and chromosomal mapping of Leishmania (Leishmania) amazonensis amastigote expressed sequence tags
The characterization of expressed sequence tags (ESTs) generated from a cDNA library of Leishmania (Leishmania) amazonensis amastigotes is described. The sequencing of 93 clones generated new L. (L.) amazonensis ESTs from which 32% are not related to any other sequences in database and 68% presented significant similarities to known genes. The chromosome loc
Memórias do Instituto Oswaldo Cruz. Publicado em: 05/07/2007