Cell Membrane And Biochemistry
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. PHYSIOLOGICAL AND BIOCHEMICAL STUDIES FOR CRYOPRESERVATION OF ZYGOTIC EMBRYOS OF DWARF GREEN COCONUT-TREE JIQUI OF BRAZIL. / ESTUDOS FISIOLÓGICOS E BIOQUÍMICOS PARA CRIOPRESERVAÇÃO DE EMBRIÕES ZIGÓTICOS DE COQUEIRO ANÃO VERDE DE JIQUI DO BRASIL.
A cultura do coco (Cocos nucifera L.) tem uma importância significativa, por gerar emprego e renda durante todo o ano. Os bancos de germoplasma in vitro oferecem vários benefícios, tais como altas taxas de multiplicação, produção de matrizes livres de patógenos, redução da erosão genética, redução da demanda por espaço, redução de custos com
Publicado em: 2010
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2. Identification and characterization of new modulators of division in B. subtilis / Identificação e caracterização de novos moduladores da divisão em Bacillus subtilis
In prokaryotes, the main form of reproduction is binary fission, which allows the mother-cell to give origin the two daughter-cells, with identical genetic material. In Bacillus subtilis, this process is performed by the divisome, a complex formed for approximately sixteen proteins that leads to the constriction of the membrane and the wall, creating the div
Publicado em: 2009
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3. Proteinas de superficie de Paracoccidioides brasiliensis / Proteinas de superficie de Paracoccidioides brasiliensis
Paracoccidioides brasiliensis is a temperature dependent dimorphic fungus, the etiological agent of paracoccidioidomycosis. In human, infection starts by inhalation of fungal propagules reaching the pulmonary epithelium, where the morphogenetic conversion is correlated with changes in the cell wall composition, organization and structure. The cell wall const
Publicado em: 2008
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4. RIC-8B, a putative GEF of the olfactory system, interacts with Gαolf, Gβ1 e Gγ13 / Ric-8B, uma GEF putativa do sistema olfatório, interage com Gαolf, Gβ1 e Gγ13
The mammalian olfactory system detects small amounts of thousands of different chemical compounds. Odorant perception starts when an odorant in the air binds to an olfactory receptor (OR). ORs belong to the super family of G-protein coupled receptors (GPCRs). Even though the odorant signaling pathway is well known, little is known about its modulators. In 20
Publicado em: 2008
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5. Synthesis and study of photoinduced properties of phenothiazine derivatives on biomimetic systems / Síntese e estudo das propriedades fotoinduzidas de derivados fenotiazínicos em sistemas biomiméticos
The effect of interfaces on photophysical and photochemical properties of methylene blue (MB) and its derivatives was studied in this work, aiming to emploit their potencial as photosensitizers (PS) in photodynamic therapy.The presence of MB in SDS solutions affect the micelle equilibrium decreasing the apparent critical micelle concentration of SDS from 7mm
Publicado em: 2008
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6. Mechanical Fractionation Reveals Structural Requirements for Enteropathogenic Escherichia coli Tir Insertion into Host Membranes
Enteropathogenic Escherichia coli (EPEC) inserts its receptor for intimate adherence (Tir) into host cell membranes by using a type III secretion system. Detergents are frequently used to fractionate infected host cells to investigate bacterial protein delivery into mammalian cells. In this study, we found that the Triton X-100-soluble membrane fraction from
American Society for Microbiology.
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7. Comparison of Human Eosinophils from Normals and Patients with Eosinophilia
Previous studies of the biochemistry and physiology of eosinophils have relied upon cells obtained from patients with eosinophilia (EE). It is unknown whether such cells might have been activated or partially exhausted by the pathological state causing eosinophilia. We examined cell surface charge, membrane transport of deoxyglucose, activation of lyso-somal
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8. The cholesterol membrane anchor of the Hedgehog protein confers stable membrane association to lipid-modified proteins
The Hedgehog proteins are potent organizers of animal development. They carry a cholesterol ester at the C terminus of their signaling domain. The membrane anchoring mediated by this lipophilic modification was studied by means of an approach integrating cell biology, biochemistry, biophysics, and organic chemistry techniques. Sterol-modified and fluorescent
National Academy of Sciences.
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9. Experimental murine candidiasis: cell-mediated immunity after cutaneous challenge.
Attempts were made to isolate an antigen(s) from Candida albicans suitable for detecting hypersensitivity in a murine model of candidiasis. Using footpad reactivity in cutaneously infected animals as the assay, comparisons were made of two commercial extracts and cell wall and cytoplasmic preparations made in the laboratory. An extract of the cell wall, a gl
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10. Ross River Virus Glycoprotein-Pseudotyped Retroviruses and Stable Cell Lines for Their Production
Pseudotyped retroviruses have important applications as vectors for gene transfer and gene therapy and as tools for the study of viral glycoprotein function. Recombinant Moloney murine leukemia virus (Mo-MuLV)-based retrovirus particles efficiently incorporate the glycoproteins of the alphavirus Ross River virus (RRV) and utilize them for entry into cells. S
American Society for Microbiology.
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11. Ultrastructure and biochemistry of the cell wall of Methanococcus voltae.
The ultrastructure and chemical composition of the cell wall of the marine archaebacterium Methanococcus voltae were studied by negative-staining and freeze-etch electron microscopy and by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. M. voltae possesses a single regularly structured (RS) protein layer external to the plasma membrane. Freeze-etc
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12. Biological activities of Eikenella corrodens outer membrane and lipopolysaccharide.
Highly purified preparations of the outer membrane and lipopolysaccharide (LPS) of Eikenella corrodens strain ATCC 23834 and the outer membrane fraction (OMF) of strain 470 were tested in in vitro biological assays. The OMFs of both strains were found to be mitogenic for BDF and C3H/HeJ murine splenocytes. The E. corrodens LPS was mitogenic for BDF spleen ce