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Annika Gloss et al.
Molecular biology of the cell, 14(7), 2716-2727 (2003-07-15)
Villidin is a novel multidomain protein (190 kDa) from Dictyostelium amoebae containing WD repeats at its N-terminus, three PH domains in the middle of the molecule, and five gelsolin-like segments at the C-terminus, followed by a villin-like headpiece. Villidin mRNA
Kanako Yano et al.
Autophagy, 3(3), 215-221 (2007-01-17)
Mature plant cells have large vacuoles. But how these vacuoles are formed has not been fully understood. It has been reported that autophagy is involved in the genesis of plant vacuoles. Thus we examined whether autophagy occurs in the vacuole
F J Rojas et al.
Molecular human reproduction, 5(6), 520-526 (1999-05-26)
Calpain, a calcium (Ca2+)-activated cysteine protease presents in several somatic mammalian cells, has been demonstrated to mediate specific Ca2+-dependent reactions including cell fusion. Because spermatozoa cells have an absolute Ca2+ requirement for penetration of oocytes, we have postulated that calpain
T Berthold et al.
Vox sanguinis, 109(4), 366-374 (2015-06-19)
Transfusion-related acute lung injury (TRALI) is often caused by antibodies against human neutrophil alloantigen-2 (HNA-2) and HNA-3a. Neutrophil aggregation is considered as a major cause of TRALI, but little is known about how HNA antibodies initiate this process. We explored
Ebun Aganna et al.
The Journal of endocrinology, 190(3), R1-R7 (2006-09-28)
The requirement for Ca(2+) to regulate hormone secretion from endocrine cells is long established, but the precise function of Ca(2+) sensors in stimulus-secretion coupling remains unclear. In the current study, we examined the expression of calpain and synaptotagmin in INS-1
Juan Mora-Galindo et al.
Experimental parasitology, 108(3-4), 89-100 (2004-12-08)
Entamoeba histolytica trophozoites are able to degrade human erythrocytes; the loss of erythrocyte cellular matrix and degradation of plasma membrane were observed, along with the decrease in the average size of digestive vacuoles. Ninety-six percent of hemoglobin ingested was hydrolyzed
Elisabeth E L Nyström et al.
EBioMedicine, 33, 134-143 (2018-06-11)
Many epithelial surfaces of the body are covered with protective mucus, and disrupted mucus homeostasis is coupled to diseases such as ulcerative colitis, helminth infection, cystic fibrosis, and chronic obstructive lung disease. However, little is known how a balanced mucus
Yazmin Alcala-Canto et al.
Parasitology research, 100(3), 461-465 (2006-10-07)
Fasciola hepatica secretes proteolytic enzymes during liver invasion. The present study examined the effects of the cysteine protease inhibitor Ep-475 on sheep considering the following variables: serum levels of aspartate aminotransferase, L-lactate dehydrogenase, and gamma-glutamyltransferase, liver fluke fecundity, egg viability
Jay R Pollack et al.
Molecular and cellular biochemistry, 251(1-2), 47-50 (2003-10-25)
Two inhibitors of the calcium-dependent cysteine protease, calpain, have markedly different effects on the extent of hypertrophy induced by the alpha-adrenergic agonist, phenylephrine, of cultured neonatal rat ventricular myocytes. E64c, an inhibitor of calpain and other cysteine proteases, stimulated the
B C Sondergaard et al.
Osteoarthritis and cartilage, 14(8), 738-748 (2006-03-28)
Both matrix metalloprotease (MMP) activity and cathepsin K (CK) activity have been implicated in cartilage turnover. We investigated the relative contribution of MMP activity and CK activity in cartilage degradation using ex vivo and in vivo models. Bovine articular cartilage
T Moldoveanu et al.
Journal of molecular biology, 343(5), 1313-1326 (2004-10-20)
The endogenous calpain inhibitor, calpastatin, modulates some patho-physiological aspects of calpain signaling. Excess calpain can escape this inhibition and as well, many calpain isoforms and autolytically generated protease core fragments are not inhibited by calpastatin. There is a need, therefore
A J Barrett et al.
The Biochemical journal, 201(1), 189-198 (1982-01-01)
1. L-trans-Epoxysuccinyl-leucylamido(4-guanidino)butane (E-64) at a concentration of 0.5 mM had no effect on the serine proteinases plasma kallikrein and leucocyte elastase or the metalloproteinases thermolysin and clostridial collagenase. In contrast, 10 muM-E-64 rapidly inactivated the cysteine proteinases cathepsins B, H
Eva Lindskog et al.
Applied microbiology and biotechnology, 71(4), 444-449 (2005-11-12)
Gelatin zymography revealed the presence of proteolytic activity in conditioned medium (CM) from a serum-free, non-infected Spodoptera frugiperda, Sf9 insect cell culture. Two peptidase bands at about 49 and 39 kDa were detected and found to be proform and active
K Tsuchiya et al.
Experimental neurology, 155(2), 187-194 (1999-03-11)
This paper is to study the participation of cathepsin in ischemic neuronal death of the monkey hippocampal cornu ammonis (CA) 1 sector and also to clarify whether its selective inhibitor epoxysuccinyl peptides such as CA-074 and E-64c can inhibit the
D A Raj et al.
Pflugers Archiv : European journal of physiology, 435(6), 804-809 (1998-06-13)
An inflammatory response triggered by neutrophil accumulation into muscle tissue is thought to occur with exercise-induced muscle damage. To investigate the relationship between Ca2+-stimulated proteolysis (calpain-like activity) and neutrophil accumulation [myeloperoxidase (MPO) activity], cardiac and plantaris muscles from rats (n
Chihiro Takatsuka et al.
Plant & cell physiology, 52(12), 2074-2087 (2011-11-01)
Tobacco culture cells carry out a large-scale degradation of intracellular proteins in order to survive under sucrose starvation conditions. We have previously suggested that this bulk degradation of cellular proteins is performed by autophagy, where autolysosomes formed de novo act
L B Creemers et al.
Matrix biology : journal of the International Society for Matrix Biology, 16(9), 575-584 (1998-05-06)
The involvement of cysteine proteinases in the degradation of soft connective tissue collagen was studied in cultured periosteal explants. Using cysteine proteinase inhibitors that were active intracellularly or extracellularly (Ep453 and Ep475, respectively), it was shown that over-all collagen degradation
T Mizuochi et al.
Immunology letters, 43(3), 189-193 (1994-12-01)
The effect of highly selective inhibitors of cathepsins on the processing of ovalbumin (OVA) and the presentation of an OVA-derived antigenic peptide (OVA323-339) by antigen presenting cells (APC) was investigated. Both CA-074 (a specific inhibitor of cathepsin B) and pepstatin
Milena Mladenovic et al.
The journal of physical chemistry. B, 113(15), 5072-5082 (2009-03-27)
In the present paper, we investigate whether crystal and enzyme environments influence the electron density (ED) of active compounds in a similar manner. This supposition is essential for high-resolution X-ray studies, which use the EDs obtained from crystals of the
Maria M M Santos et al.
Mini reviews in medicinal chemistry, 7(10), 1040-1050 (2007-11-06)
Cysteine proteases selectively catalyze the hydrolysis of peptide bonds. Uncontrolled, unregulated, or undesired proteolysis can lead to many disease states including emphysema, stroke, viral infections, cancer, Alzheimer's disease, inflammation, and arthritis. Cysteine proteases inhibitors thus have considerable potential utility for
Atsushi Yamamoto et al.
Biochimica et biophysica acta, 1597(2), 244-251 (2002-06-05)
In order to elucidate the substrate specificity of the Sn subsites (n=1-3) of cathepsin B, its crystal structure inhibited by E64c [(+)-(2S,3S)-3-(1-[N-(3-methylbutyl)amino]-leucylcarbonyl)oxirane-2-carboxylic acid] was analyzed by the X-ray diffraction method. Iterative manual rebuilding and convenient conjugate refinement of structure decreased
Jacques Marquay Markiewicz et al.
PLoS neglected tropical diseases, 5(4), e1002-e1002 (2011-04-13)
Exposure of Entamoeba histolytica to specific ligands induces cell polarization via the activation of signalling pathways and cytoskeletal elements. The process leads to formation of a protruding pseudopod at the front of the cell and a retracting uropod at the
Cássio S Meira et al.
Parasitology, 140(14), 1811-1821 (2013-09-05)
We previously observed that physalins have immunomodulatory properties, as well as antileishmanial and antiplasmodial activities. Here, we investigated the anti-Trypanosoma cruzi activity of physalins B, D, F and G. We found that physalins B and F were the most potent
T Yasuda et al.
Developmental biology, 170(1), 159-168 (1995-07-01)
m-Calpain, a Ca(2+)-dependent neutral cysteine proteinase (EC, has been demonstrated to be present in the lower hypertrophic zone of the rat growth plate. Using the pelleted culture system as an in vitro model of rat epiphyseal chondrocyte differentiation, we
Tanira M Bastos et al.
Antimicrobial agents and chemotherapy, 58(10), 6044-6055 (2014-08-06)
cis-[RuCl(NO2)(dppb)(5,5'-mebipy)] (complex 1), cis-[Ru(NO2)2(dppb)(5,5'-mebipy)] (complex 2), ct-[RuCl(NO)(dppb)(5,5'-mebipy)](PF6)2 (complex 3), and cc-[RuCl(NO)(dppb)(5,5'-mebipy)](PF6)2 (complex 4), where 5,5'-mebipy is 5,5'-dimethyl-2,2'-bipyridine and dppb is 1,4-bis(diphenylphosphino)butane, were synthesized and characterized. The structure of complex 2 was determined by X-ray crystallography. These complexes exhibited a higher
Takeyuki Ohshita et al.
Bioscience, biotechnology, and biochemistry, 70(9), 2254-2261 (2006-09-09)
A cystatin alpha-sensitive cysteine proteinase that plays an important role in the lysosomal inactivation and degradation of L-lactate dehydrogenase (LDH) was purified by column chromatography from an ammonium sulfate precipitate of lysosome extract prepared from rat livers. It was eluted
Masaki Yoshida et al.
Acta neuropathologica, 104(3), 267-272 (2002-08-13)
Previously, we reported "calpain-induced leakage of lysosomal enzyme cathepsin" as a mechanism of ischemic neuronal death specific for primates. Cathepsin inhibitors such as CA-074 and E-64c were demonstrated to significantly inhibit hippocampal neuronal death. Pyramidal neurons of the hippocampus, Purkinje
T Inuzuka et al.
Brain research, 526(1), 177-179 (1990-08-27)
Microtubule-associated protein 2 (MAP2) levels in the left cerebral hemisphere decreased significantly 3 days after occlusion of the left middle cerebral artery in rats to 29 +/- 16.3% of control levels. Since MAP2 is one of the substrates of calpain
Masami Hayashi et al.
Journal of biochemistry, 137(3), 331-338 (2005-04-06)
There is increasing evidence that calpain contributes to the reorganization of the cytoskeleton in the integrin-mediated signaling pathway. Osteoclastic bone resorption requires cell-matrix contact, an event mediated by integrin alphavbeta3, and subsequent cytoskeletal reorganization to form characteristic membrane domains such
G D Arthur et al.
Molecular and cellular biochemistry, 176(1-2), 241-248 (1997-12-24)
The purpose of this study was to test the relationship between biochemical and functional changes accompanying beta-agonist induced cardiac hypertrophy and the activation of a calcium stimulated cysteine protease. Because the ultrastructural and ionic changes accompanying beta-agonist induced cardiac hypertrophy
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