Tip41 Protein
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Characterization of the type 2A phosphatase regulatory protein, TIPRL and alpha4 / Caracterização das proteinas TIPRL e alfa4, reguladores de fosfatases 2A
Cells respond constantly to a variety of stimuli, which are interpreted and integrated through signaling networks, giving rise to biological responses. Defects in this circuitry are a cause of many diseases, including cancer. Protein phosphatases are enzymes which remove phosphate groups from kinase substrates, relying mainly on regulatory subunits for their
Publicado em: 2009
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2. Structural analyses of rab family GTPases and mechanism of Mafb regulation by the protein TIPRL / Analises estruturais de GTPases da familia RAB e mecanismo de regulção de MAFB pela proteina TIPRL
GTPases of the Rab family are responsible for the intracellular transport of vesicles. Each family member acts on a specific transport pathway and their function is regulated by GTP binding and hydrolysis, cycling between inactive (GDP-bound) and active (GTP-bound) forms. In this work, we describe the crystal structure of inactive and active forms of the GTP
Publicado em: 2007
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3. Identification and Characterization of a Ca2+-Dependent Actin Filament-Severing Protein from Lily Pollen1
It is well known that a tip-focused intracellular Ca2+ gradient and the meshwork of short actin filaments at the tip region are necessary for pollen tube growth. However, little is known about the connections between the two factors. Here, a novel Ca2+-dependent actin-binding protein with molecular mass of 41 kD from lily (Lilium davidii) pollen (LdABP41) wa
American Society of Plant Biologists.
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4. Urea Transport by Nitrogen-Regulated Tonoplast Intrinsic Proteins in Arabidopsis1
Urea is the major nitrogen (N) form supplied as fertilizer in agricultural plant production and also an important N metabolite in plants. Because urea transport in plants is not well understood, the aim of the present study was to isolate urea transporter genes from the model plant Arabidopsis. Using heterologous complementation of a urea uptake-defective ye
The American Society for Plant Biologists.
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5. Targeting of the Human Immunodeficiency Virus Type 1 Envelope to the trans-Golgi Network through Binding to TIP47 Is Required for Env Incorporation into Virions and Infectivity
Here, we report that human immunodeficiency virus type 1 (HIV-1) Env glycoprotein is located mainly in the trans-Golgi network (TGN) due to determinants present in the cytoplasmic domain of the transmembrane gp41 glycoprotein (TMgp41). Internalization assays demonstrated that Env present at the cell surface returns to the TGN. We found that the cytoplasmic d
American Society for Microbiology.
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6. The Arabidopsis Rab GTPase RabA4b Localizes to the Tips of Growing Root Hair CellsW⃞
Spatial and temporal control of cell wall deposition plays a unique and critical role during growth and development in plants. To characterize membrane trafficking pathways involved in these processes, we have examined the function of a plant Rab GTPase, RabA4b, during polarized expansion in developing root hair cells. Whereas a small fraction of RabA4b cofr
American Society of Plant Biologists.
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7. The Genetic and Cytogenetic Localization of the Three Structural Genes Coding for the Major Protein of Drosophila Larval Serum
The α, β and γ polypeptides that make up Drosophila Larval Serum Protein-1 seem to be coded for by genes that have evolved by duplication of a common ancestral gene. We have found variants of all three polypeptides, and these are variants of the coding sequences. The α-chain variant mapped to 39.5 on the X chromosome and to the polytene interval 11A7-11B
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8. Kinematics of red cell aspiration by fluorescence-imaged microdeformation.
Maps of fluorescing red cell membrane components on a pipette-aspirated projection are quantitated in an effort to elucidate and unify the heterogeneous kinematics of deformation. Transient gradients of diffusing fluorescent lipid first demonstrate the fluidity of an otherwise uniform-density bilayer and corroborate a "universal" calibration scale for relati
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9. PP2A Phosphatase Activity Is Required for Stress and Tor Kinase Regulation of Yeast Stress Response Factor Msn2p
In response to stress and nutrient starvation, the Saccharomyces cerevisiae transcription factor Msn2p accumulates in the nucleus and activates expression of a broad array of genes. Here, we analyze the role of the Tor (target of rapamycin) signaling pathway in mediating these responses. Inactivation of the Tor pathway component Tap42p using tap42(Ts) allele
American Society for Microbiology.