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  • Recombinant Fusion Proteins/metabolism  (30)
  • American Association for the Advancement of Science (AAAS)  (30)
  • American Association for the Advancement of Science
  • Oxford University Press
  • Springer Nature
  • 2000-2004  (30)
  • 1995-1999
  • 1980-1984
  • 1940-1944
  • 2002  (20)
  • 2000  (10)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (30)
  • American Association for the Advancement of Science
  • Oxford University Press
  • Springer Nature
Years
  • 2000-2004  (30)
  • 1995-1999
  • 1980-1984
  • 1940-1944
Year
  • 1
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    Asparagine hydroxylation of the HIF transactivation domain a hypoxic switch (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-02
    Description: The hypoxia-inducible factors (HIFs) 1alpha and 2alpha are key mammalian transcription factors that exhibit dramatic increases in both protein stability and intrinsic transcriptional potency during low-oxygen stress. This increased stability is due to the absence of proline hydroxylation, which in normoxia promotes binding of HIF to the von Hippel-Lindau (VHL tumor suppressor) ubiquitin ligase. We now show that hypoxic induction of the COOH-terminal transactivation domain (CAD) of HIF occurs through abrogation of hydroxylation of a conserved asparagine in the CAD. Inhibitors of Fe(II)- and 2-oxoglutarate-dependent dioxygenases prevented hydroxylation of the Asn, thus allowing the CAD to interact with the p300 transcription coactivator. Replacement of the conserved Asn by Ala resulted in constitutive p300 interaction and strong transcriptional activity. Full induction of HIF-1alpha and -2alpha, therefore, relies on the abrogation of both Pro and Asn hydroxylation, which during normoxia occur at the degradation and COOH-terminal transactivation domains, respectively.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lando, David -- Peet, Daniel J -- Whelan, Dean A -- Gorman, Jeffrey J -- Whitelaw, Murray L -- New York, N.Y. -- Science. 2002 Feb 1;295(5556):858-61.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biosciences (Biochemistry), Adelaide University, SA 5005, Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11823643" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Asparagine/*metabolism ; Basic Helix-Loop-Helix Transcription Factors ; Cell Hypoxia/*physiology ; Cell Line ; Humans ; Hydroxylation ; Hypoxia-Inducible Factor 1, alpha Subunit ; Mass Spectrometry ; Mice ; Mixed Function Oxygenases/metabolism ; Molecular Sequence Data ; Mutation ; Oxygen/*physiology ; Proline/metabolism ; Protein Structure, Tertiary ; Recombinant Fusion Proteins/metabolism ; Trans-Activators/chemistry/genetics/*metabolism ; Transcription Factors/chemistry/genetics/*metabolism ; *Transcriptional Activation
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    Regulation of MAPK function by direct interaction with the mating-specific Galpha in yeast (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-25
    Description: The mating response of the budding yeast Saccharomyces cerevisiae is mediated by a prototypical heterotrimeric GTP-binding protein (G protein) and mitogen-activated protein kinase (MAPK) cascade. Although signal transmission by such pathways has been modeled in detail, postreceptor down-regulation is less well understood. The pheromone-responsive G protein alpha subunit (Galpha) of yeast down-regulates the mating signal, but its targets are unknown. We have found that Galpha binds directly to the mating-specific MAPK in yeast cells responding to pheromone. This interaction contributes both to modulation of the mating signal and to the chemotropic response, and it demonstrates direct communication between the top and bottom of a Galpha-MAPK pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Metodiev, Metodi V -- Matheos, Dina -- Rose, Mark D -- Stone, David E -- New York, N.Y. -- Science. 2002 May 24;296(5572):1483-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, Laboratory for Molecular Biology, University of Illinois at Chicago, 900 South Ashland Avenue (M/C 567), Chicago, IL 60607, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12029138" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Amino Acid Sequence ; Cell Nucleus/metabolism ; Cytoplasm/metabolism ; Down-Regulation ; *GTP-Binding Protein alpha Subunits ; GTP-Binding Protein alpha Subunits, Gq-G11 ; *GTP-Binding Protein beta Subunits ; Guanosine Diphosphate/metabolism ; Heterotrimeric GTP-Binding Proteins/chemistry/genetics/*metabolism ; *MAP Kinase Signaling System ; Mitogen-Activated Protein Kinases/*metabolism ; Molecular Sequence Data ; Mutation ; Pheromones/pharmacology ; Phosphorylation ; Recombinant Fusion Proteins/metabolism ; Saccharomyces cerevisiae/genetics/*metabolism/physiology ; Saccharomyces cerevisiae Proteins/*metabolism
    Print ISSN: 0036-8075
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  • 3
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    Partitioning of lipid-modified monomeric GFPs into membrane microdomains of live cells (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-05-04
    Description: Many proteins associated with the plasma membrane are known to partition into submicroscopic sphingolipid- and cholesterol-rich domains called lipid rafts, but the determinants dictating this segregation of proteins in the membrane are poorly understood. We suppressed the tendency of Aequorea fluorescent proteins to dimerize and targeted these variants to the plasma membrane using several different types of lipid anchors. Fluorescence resonance energy transfer measurements in living cells revealed that acyl but not prenyl modifications promote clustering in lipid rafts. Thus the nature of the lipid anchor on a protein is sufficient to determine submicroscopic localization within the plasma membrane.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zacharias, David A -- Violin, Jonathan D -- Newton, Alexandra C -- Tsien, Roger Y -- 2T32 GM07752/GM/NIGMS NIH HHS/ -- DK54441/DK/NIDDK NIH HHS/ -- NS27177/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2002 May 3;296(5569):913-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, Biomedical Sciences Graduate Program, and, Howard Hughes Medical Institute, University of California, San Diego, La Jolla, CA 92093-0647, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11988576" target="_blank"〉PubMed〈/a〉
    Keywords: Acylation ; Animals ; Bacterial Proteins/chemistry/*metabolism ; Caveolin 1 ; Caveolins/metabolism ; Cell Line ; Detergents ; Dimerization ; Dogs ; Energy Transfer ; Fluorescence ; Green Fluorescent Proteins ; Luminescent Proteins/chemistry/*metabolism ; Membrane Microdomains/*metabolism ; Myristic Acid/metabolism ; Oligopeptides/chemistry/*metabolism ; Palmitic Acid/metabolism ; Protein Prenylation ; Recombinant Fusion Proteins/metabolism ; Solubility ; Spectrometry, Fluorescence ; Transfection
    Print ISSN: 0036-8075
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  • 4
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    Inhibition of excess nodal signaling during mouse gastrulation by the transcriptional corepressor DRAP1 (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-12-10
    Description: The formation and patterning of mesoderm during mammalian gastrulation require the activity of Nodal, a secreted mesoderm-inducing factor of the transforming growth factor-beta (TGF-beta) family. Here we show that the transcriptional corepressor DRAP1 has a very specific role in regulation of Nodal activity during mouse embryogenesis. We find that loss of Drap1 leads to severe gastrulation defects that are consistent with increased expression of Nodal and can be partially suppressed by Nodal heterozygosity. Biochemical studies indicate that DRAP1 interacts with and inhibits DNA binding by the winged-helix transcription factor FoxH1 (FAST), a critical component of a positive feedback loop for Nodal activity. We propose that DRAP1 limits the spread of a morphogenetic signal by down-modulating the response to the Nodal autoregulatory loop.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iratni, Rabah -- Yan, Yu-Ting -- Chen, Canhe -- Ding, Jixiang -- Zhang, Yi -- Price, Sandy M -- Reinberg, Danny -- Shen, Michael M -- New York, N.Y. -- Science. 2002 Dec 6;298(5600):1996-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Biochemistry, Division of Nucleic Acids Enzymology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway, NJ 08854, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12471260" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Cell Line ; Crosses, Genetic ; DNA/metabolism ; DNA-Binding Proteins/metabolism ; *Embryonic and Fetal Development ; Female ; Forkhead Transcription Factors ; Gastrula/*physiology ; Gene Expression Regulation, Developmental ; Gene Targeting ; Heterozygote ; In Situ Hybridization ; Left-Right Determination Factors ; Male ; Mesoderm/cytology/physiology ; Mice ; Morphogenesis ; Mutation ; Nodal Protein ; Phenotype ; Protein Binding ; RNA Interference ; Recombinant Fusion Proteins/metabolism ; Repressor Proteins/genetics/*metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; *Signal Transduction ; Transcription Factors/metabolism ; Transforming Growth Factor beta/genetics/*metabolism
    Print ISSN: 0036-8075
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  • 5
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    Regulation of corepressor function by nuclear NADH (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-16
    Description: The corepressor CtBP (carboxyl-terminal binding protein) is involved in transcriptional pathways important for development, cell cycle regulation, and transformation. We demonstrate that CtBP binding to cellular and viral transcriptional repressors is regulated by the nicotinamide adenine dinucleotides NAD+ and NADH, with NADH being two to three orders of magnitude more effective. Levels of free nuclear nicotinamide adenine dinucleotides, determined using two-photon microscopy, correspond to the levels required for half-maximal CtBP binding and are considerably lower than those previously reported. Agents capable of increasing NADH levels stimulate CtBP binding to its partners in vivo and potentiate CtBP-mediated repression. We propose that this ability to detect changes in nuclear NAD+/NADH ratio allows CtBP to serve as a redox sensor for transcription.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhang, Qinghong -- Piston, David W -- Goodman, Richard H -- K01 CA096561/CA/NCI NIH HHS/ -- R01 CA115468/CA/NCI NIH HHS/ -- R01 CA115468-05/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 8;295(5561):1895-7. Epub 2002 Feb 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Vollum Institute, Oregon Health Sciences University, 3181 SW Sam Jackson Park Road, Portland, OR 97201, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11847309" target="_blank"〉PubMed〈/a〉
    Keywords: Adenovirus E1A Proteins/metabolism ; Alcohol Oxidoreductases ; Amino Acid Sequence ; Animals ; Binding Sites ; Cadherins/genetics ; Cell Nucleus/*metabolism ; Cytoplasm/metabolism ; DNA-Binding Proteins/chemistry/genetics/*metabolism ; *Gene Expression Regulation ; HeLa Cells ; Homeodomain Proteins/metabolism ; Humans ; Microscopy, Fluorescence ; Molecular Sequence Data ; Mutation ; NAD/*metabolism ; Oxidation-Reduction ; Phosphoproteins/chemistry/genetics/*metabolism ; Promoter Regions, Genetic ; Protein Binding ; Recombinant Fusion Proteins/metabolism ; Repressor Proteins/*metabolism ; *Transcription Factors ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
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  • 6
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    Local actin polymerization and dynamin recruitment in SV40-induced internalization of caveolae (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-20
    Description: Simian virus 40 (SV40) utilizes endocytosis through caveolae for infectious entry into host cells. We found that after binding to caveolae, virus particles induced transient breakdown of actin stress fibers. Actin was then recruited to virus-loaded caveolae as actin patches that served as sites for actin "tail" formation. Dynamin II was also transiently recruited. These events depended on the presence of cholesterol and on the activation of tyrosine kinases that phosphorylated proteins in caveolae. They were necessary for formation of caveolae-derived endocytic vesicles and for infection of the cell. Thus, caveolar endocytosis is ligand-triggered and involves extensive rearrangement of the actin cytoskeleton.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pelkmans, Lucas -- Puntener, Daniel -- Helenius, Ari -- New York, N.Y. -- Science. 2002 Apr 19;296(5567):535-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Swiss Federal Institute of Technology Zurich (ETHZ), HPM1 Building, ETH Honggerberg, CH-8093 Zurich, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11964480" target="_blank"〉PubMed〈/a〉
    Keywords: Actin Cytoskeleton/*physiology/ultrastructure ; Actins/*metabolism ; Animals ; Bicyclo Compounds, Heterocyclic/pharmacology ; Caveolae/*metabolism/ultrastructure/virology ; Caveolin 1 ; Caveolins/metabolism ; Cell Line ; Cholesterol/physiology ; *Depsipeptides ; Dynamins ; *Endocytosis ; GTP Phosphohydrolases/genetics/*metabolism ; Haplorhini ; Peptides, Cyclic/pharmacology ; Phosphorylation ; Phosphotyrosine/metabolism ; Protein-Tyrosine Kinases/antagonists & inhibitors/metabolism ; Recombinant Fusion Proteins/metabolism ; Simian virus 40/*physiology ; Stress Fibers/metabolism ; Thiazoles/pharmacology ; Thiazolidines ; Transport Vesicles/metabolism
    Print ISSN: 0036-8075
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  • 7
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    A functional screen for the type III (Hrp) secretome of the plant pathogen Pseudomonas syringae (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-03-02
    Description: Type III secreted "effector" proteins of bacterial pathogens play central roles in virulence, yet are notoriously difficult to identify. We used an in vivo genetic screen to identify 13 effectors secreted by the type III apparatus (called Hrp, for "hypersensitive response and pathogenicity") of the plant pathogen Pseudomonas syringae. Although sharing little overall homology, the amino-terminal regions of these effectors had strikingly similar amino acid compositions. This feature facilitated the bioinformatic prediction of 38 P. syringae effectors, including 15 previously unknown proteins. The secretion of two of these putative effectors was shown to be type III--dependent. Effectors showed high interstrain variation, supporting a role for some effectors in adaptation to different hosts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guttman, David S -- Vinatzer, Boris A -- Sarkar, Sara F -- Ranall, Max V -- Kettler, Gregory -- Greenberg, Jean T -- GM020024/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2002 Mar 1;295(5560):1722-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON M5S 3B2, Canada. guttman@botany.utoronto.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11872842" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acids/analysis ; Arabidopsis/genetics/metabolism/*microbiology ; *Arabidopsis Proteins ; Bacterial Proteins/chemistry/*genetics/*metabolism ; Computational Biology ; DNA Transposable Elements ; *Genes, Bacterial ; Genomics ; Molecular Sequence Data ; Plant Proteins/metabolism ; Promoter Regions, Genetic ; Proteome ; Pseudomonas/*genetics/*metabolism/pathogenicity ; Recombinant Fusion Proteins/metabolism ; Virulence
    Print ISSN: 0036-8075
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  • 8
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    Differential clustering of CD4 and CD3zeta during T cell recognition (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-26
    Description: Whereas T helper cells recognize peptide-major histocompatibility complex (MHC) class II complexes through their T cell receptors (TCRs), CD4 binds to an antigen-independent region of the MHC. Using green fluorescent protein-tagged chimeras and three-dimensional video microscopy, we show that CD4 and TCR-associated CD3zeta cluster in the interface coincident with increases in intracellular calcium. Signaling-, costimulation-, and cytoskeleton-dependent processes then stabilize CD3zeta in a single cluster at the center of the interface, while CD4 moves to the periphery. Thus, the CD4 coreceptor may serve primarily to "boost" recognition of ligand by the TCR and may not be required once activation has been initiated.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Krummel, M F -- Sjaastad, M D -- Wulfing, C -- Davis, M M -- New York, N.Y. -- Science. 2000 Aug 25;289(5483):1349-52.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology and Immunology, Stanford University School of Medicine, and the Howard Hughes Medical Institute, Stanford, CA 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10958781" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigen-Presenting Cells/immunology ; Antigens, CD3/*metabolism ; Antigens, CD4/*metabolism ; Calcium Signaling ; Cell Line ; Cytoskeleton/physiology ; Histocompatibility Antigens Class II/immunology/metabolism ; Ligands ; *Lymphocyte Activation ; Microscopy, Video ; Phosphorylation ; Receptors, Antigen, T-Cell/immunology/metabolism ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes, Helper-Inducer/*immunology/metabolism ; Transfection
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  • 9
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    Ubiquitin protein ligase activity of IAPs and their degradation in proteasomes in response to apoptotic stimuli (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-05-08
    Description: To determine why proteasome inhibitors prevent thymocyte death, we examined whether proteasomes degrade anti-apoptotic molecules in cells induced to undergo apoptosis. The c-IAP1 and XIAP inhibitors of apoptosis were selectively lost in glucocorticoid- or etoposide-treated thymocytes in a proteasome-dependent manner before death. IAPs catalyzed their own ubiquitination in vitro, an activity requiring the RING domain. Overexpressed wild-type c-IAP1, but not a RING domain mutant, was spontaneously ubiquitinated and degraded, and stably expressed XIAP lacking the RING domain was relatively resistant to apoptosis-induced degradation and, correspondingly, more effective at preventing apoptosis than wild-type XIAP. Autoubiquitination and degradation of IAPs may be a key event in the apoptotic program.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yang, Y -- Fang, S -- Jensen, J P -- Weissman, A M -- Ashwell, J D -- New York, N.Y. -- Science. 2000 May 5;288(5467):874-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Immune Cell Biology, Division of Basic Sciences, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10797013" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Apoptosis ; Cells, Cultured ; Cysteine Endopeptidases/*metabolism ; Dexamethasone/pharmacology ; Etoposide/pharmacology ; Hybridomas ; Inhibitor of Apoptosis Proteins ; Ligases/*metabolism ; Mice ; Mice, Inbred C57BL ; Multienzyme Complexes/*metabolism ; Proteasome Endopeptidase Complex ; Protein Structure, Tertiary ; Proteins/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; T-Lymphocytes/cytology/drug effects/*metabolism ; Thymus Gland/cytology ; Transfection ; Ubiquitin-Protein Ligases ; Ubiquitins/metabolism ; X-Linked Inhibitor of Apoptosis Protein
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  • 10
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    Plasma membrane compartmentalization in yeast by messenger RNA transport and a septin diffusion barrier (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-13
    Description: Asymmetric localization of proteins plays a key role in many cellular processes, including cell polarity and cell fate determination. Using DNA microarray analysis, we identified a plasma membrane protein-encoding mRNA (IST2) that is transported to the bud tip by an actomyosin-based process. mRNA localization created a higher concentration of IST2 protein in the bud compared with that of the mother cell, and this asymmetry was maintained by a septin-mediated membrane diffusion barrier at the mother-bud neck. These results indicate that yeast creates distinct plasma membrane compartments, as has been described in neurons and epithelial cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Takizawa, P A -- DeRisi, J L -- Wilhelm, J E -- Vale, R D -- 38496/PHS HHS/ -- New York, N.Y. -- Science. 2000 Oct 13;290(5490):341-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Pharmacology, Howard Hughes Medical Institute, University of California, San Francisco, CA 94143, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11030653" target="_blank"〉PubMed〈/a〉
    Keywords: Actomyosin/metabolism ; Biological Transport ; Cell Compartmentation ; Cell Cycle ; Cell Cycle Proteins/genetics/*metabolism ; Cell Membrane/metabolism ; *Cytoskeletal Proteins ; *DNA-Binding Proteins ; Diffusion ; Fungal Proteins/genetics/*metabolism ; Membrane Proteins/genetics/*metabolism ; Mutation ; *Myosin Heavy Chains ; *Myosin Type V ; Myosins/metabolism ; Oligonucleotide Array Sequence Analysis ; RNA, Fungal/metabolism ; RNA, Messenger/*metabolism ; Recombinant Fusion Proteins/metabolism ; *Repressor Proteins ; Saccharomyces cerevisiae/cytology/genetics/growth & development/*metabolism ; *Saccharomyces cerevisiae Proteins ; Temperature ; Transcription Factors/genetics
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