GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Online-Ressource
    Online-Ressource
    San Diego :Elsevier Science & Technology,
    Schlagwort(e): Aquaporins. ; Electronic books.
    Beschreibung / Inhaltsverzeichnis: Aquaporins summarizes the present knowledge in this expanding field of research, starting with the structural analysis of water channel proteins. Subsequent chapters begin with mammalian aquaporins, examining physiology and pathophysiology, analysis of knock-out model animals, and the regulation of aquaporin function. Also covered is the distribution and regulation of aquaporins in plants and the function of water and glycerol channels in microbial systems. Comprehensive treatment of a topical research field Authored by world leaders in the field Covers structural biology and physiology Covers different experimental and biological systems Chapters on plant and microbial systems Extensive treatment of mammalian physiology and pathophysiology Structural analysis excellently illustrated.
    Materialart: Online-Ressource
    Seiten: 1 online resource (408 pages)
    Ausgabe: 1st ed.
    ISBN: 9780080494395
    Serie: Issn Series ; v.Volume 51
    DDC: 572.6
    Sprache: Englisch
    Anmerkung: Front Cover -- Aquaporins -- Copyright Page -- Contents -- Contributors -- Preface -- Previous Volumes In Series -- Chapter 1. Discovery of the Aquaporins and Their Impact on Basic and Clinical Physiology -- I. Pre-Aquaporin Era -- II. The First Recognized Water Channel Protein -- III. Other Mammalian Aquaporins -- IV. Nonmammalian Homologs -- V. Perspective -- References -- Chapter 2. The Aquaporin Superfamily: Structure and Function -- I. Introduction -- II. Two-Dimensional Crystallization of Membrane Proteins -- III. Electron Crystallography -- IV. Atomic Force Microscopy -- V. AQP1, The Erythrocyte Water Channel -- VI. AQP0: The Major Intrinsic Protein of Lens Fiber Cells -- VII. Water Channel of Escherichia Coli: Aqpz -- VIII. Glycerol Channel of Escherichia Coli: Glpf -- IX. Comparison of the High-Resolution Projection Structures of Glpf and AQP1 -- X. Conclusion and Perspectives -- References -- Chapter 3. Physiological Roles of Aquaporins in the Kidney -- I. Introduction -- II. Water Transport along The Renal Tubule -- III. Water Permeability along the Renal Tubule -- IV. Aquaporin-1 Facilitates Isoosmotic Fluid Transport in Proximal Tubule -- V. Aquaporin-1 Allows Osmotic Equilibration In the Thin Descending Limb Of Henle Despite Rapid Flow Of Tubule Fluid -- VI. Aquaporin-1 Allows Osmotic Equilibration in the Descending Vasa Recta -- VII. Aquaporins Provide Molecular Targets For Regulation of Water Transport in the Renal Collecting Duct -- References -- Chapter 4. Pathophysiology of Renal Aquaporins -- I. Introduction -- II. Pathophysiology of Renal Aquaporins -- III. Inherited NDI and CDI -- IV. Acquired NDI -- V. Urinary Concentrating Defects -- VI. States of Water Retention -- VII. Conclusions -- References -- Chapter 5. Genetic and Biophysical Approaches to Study Water Channel Biology -- I. Introduction. , II. Lessons from Aquaporin Knockout Mice -- III. Biophysical Analysis of Aquaporin Function -- IV. Aquaporin Structure and Function -- V. New Directions in Aquaporin Physiology and Biophysics -- References -- Chapter 6. Trafficking of Native and Mutant Mammalian MIP Proteins -- I. Normal Routing of MIP Proteins -- II. Disturbed Trafficking of MIP Proteins -- References -- Chapter 7. Aquaporins Of Plants: Structure, Function, Regulation, and Role in Plant Water Relations -- I. The Transpiration Stream -- II. Water Movement in and Between Living Tissues -- III. Molecular Characteristics and Transport Properties Of Plant Aquaporins -- IV. Subcellular Location of Plant Aquaporins -- V. What Do The Water and Solute Transport Properties Of Membranes Tell Us about the Aquaporins In Those Membranes? -- VI. The Multiple Roles of Aquaporins: How to Link Water Transport Properties to Functions at the Cellular and Tissue Level -- VII. Regulation of Aquaporin Expression and Water Transport Activity -- References -- Chapter 8. Microbial Water Channels and Glycerol Facilitators -- I. Introduction -- II. Microbial Aquaporins and Glycerol Facilitators -- III. Transport Properties and Channel Selectivity of Microbial MIP Channels -- IV. From Primary to Quaternary Structure in Microbial MIPs -- V. Physiological Roles -- VI. Microbial MIP Channels in Osmoregulation -- VII. Control of the Function of Microbial MIP Channels -- VIII. Conclusions and Future Perspectives -- References -- Chapter 9. Future Directions Of Aquaporin Research -- I. Identification And Characterization of New MIP Channels -- II. Why Have So Many MIP Channels? -- III. Analysis of the Physiological Roles of Aquaporins -- IV. Structure and Function -- V. Aquaporins as Targets for Treatment of Human Disease -- VI. Aquaporins as Possible Targets for Genetic Engineering and Crop Improvement. , VII. Metabolic Engineering With Aquaporins -- VIII. The Aquaporin Research Community -- References -- Index.
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 2
    Online-Ressource
    Online-Ressource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Schlagwort(e): Yeast fungi-Effect of stress on. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (398 pages)
    Ausgabe: 1st ed.
    ISBN: 9783540456117
    Serie: Topics in Current Genetics Series ; v.1
    DDC: 571.2/9562
    Sprache: Englisch
    Anmerkung: Intro -- Yeast Stress Responses -- Table of Contents -- List of contributors -- 1 Introduction -- What is stress? -- Studies of stress responses -- Cell proliferation and stress -- Aim of the stress response -- Phases of the stress response -- Sensing and signalling -- Adaptation to stress -- Yeast as a model -- 2The environmental stress response: a common yeast response to diverse environmental stresses -- 2.1 Introduction -- 2.2 The environmental stress response -- 2.3 Responsiveness of ESR gene expression -- 2.4 Transcript levels versus protein synthesis levels -- 2.5 Functions represented by genes repressed in the ESR -- 2.5.1 Ribosome synthesis -- 2.5.2 tRNA synthesis -- 2.5.3 General transcription -- 2.5.4 RNA splicing and export -- 2.5.5 Translation -- 2.6 Functions represented by genes induced in the ESR -- 2.6.1 Carbohydrate metabolism -- 2.6.2 Fatty acid metabolism -- 2.6.3 Respiration -- 2.6.4 Oxidative stress defense -- 2.6.5 Autophagy and vacuolar functions -- 2.6.6 Protein folding and degradation -- 2.6.7 Cytoskeletal reorganization -- 2.6.8 Signaling -- 2.7 Functional themes in the ESR -- 2.7.1 Differential expression of isozymes -- 2.7.2 Coinduction of genes with counterproductive functions -- 2.7.3 Regulation of control steps of metabolic processes -- 2.8 The role of the ESR -- 2.9 Regulation of ESR gene expression -- 2.9.1 Rap1p -- 2.9.2 Chromatin remodeling -- 2.9.3 Regulated mRNA turnover -- 2.9.4 Msn2p and Msn4p -- 2.9.5 Condition-specific transcriptional induction -- 2.9.6 Condition-specific cellular signaling -- 2.9.7 Advantages of the complex regulation of ESR gene expression -- 2.10 Orchestration of cellular responses to stress -- 2.11 Conclusions -- 3 The yeast response to heat shock -- 3.1 Introduction -- 3.2 The heat shock and environmental stress responses. , 3.2.1 Transcriptional regulators of heat shock gene induction -- 3.2.2 Delineation of the Hsf1p and Msn2p/Msn4p heat shock regulons -- 3.2.3 The role of trehalose in thermotolerance -- 3.2.4 Thermal stress phenotypes in yeast -- 3.3 Regulation of the heat shock factor Hsf1p -- 3.3.1 Regulation of Hsf1p transcriptional activation -- 3.3.2 The role of phosphorylation in Hsf1p regulation -- 3.3.3 Genetic and structural insights into DNA binding and regulation -- 3.3.4 Sensing the proteome: regulation by protein chaperones -- 3.3.5 Hsf1p-like proteins in yeast -- 3.3.6 Hsf1p and the cell cycle -- 3.4 New directions in protein chaperone biology -- 3.4.1 Hsp90 chaperone complex subunits in yeast -- 3.4.2 Endogenous yeast Hsp90 substrates -- 3.4.3 Protein chaperones and yeast prion propagation -- 3.5 Stress and aging -- 3.6 Conclusions -- 4 The osmotic stress response of Saccharomyces cerevisiae -- 4.1 Introduction -- 4.2 Structural and morphological effects caused by osmotic stress -- 4.3 Glycerol and glycerol metabolism -- 4.3.1 Glycerol metabolic pathways -- 4.3.2 Glycerol transport -- 4.3.3 Glycerol accumulation under osmotic stress: multiple levels of control -- 4.4 Transport processes affected by osmotic stress -- 4.4.1 MIP channels: aquaporins and glycerol channels -- 4.4.2 Osmolyte uptake systems -- 4.4.3 Ion channels -- 4.5 Perception of and response to osmotic stress: the role of signalling pathways -- 4.5.1 S. cerevisise MAPK pathways -- 4.5.2 The HOG MAPK pathway in Saccharomyces cerevisise -- 4.5.3 Control of gene expression -- 4.5.4 The cell integrity pathway -- 4.5.5 Skn7p: a putative link between osmosensing pathways -- 4.5.6 Additional systems involved in osmotic stress signalling -- 4.5.7 Mechanisms of osmosensing -- 4.6 Metabolic adjustments -- 4.7 Osmotic signalling in other yeasts: the S. pombe Sty1 pathway -- 4.8 Conclusions. , 5 Ion homeostasis in Saccharomyces cerevisiae under NaCl stress -- 5.1 Introduction -- 5.2 Yeast Na+ and K+ relations -- 5.2.1 Growth and intracellular ion levels -- 5.2.2 Why is K but not Na a preferred intracellular cation? -- 5.2.3 Na toxicity -- 5.3 Adaptation to high concentrations of salt: role of ion transporters -- 5.3.1 The plasma membrane H -ATPase -- 5.3.2 K transport systems -- 5.3.3 The Pmr2Ap/Ena1p sodium transporter -- 5.3.4 The Nha1p Na /H antiporter -- 5.3.5 Compartmentalization of Na -- 5.4 Regulation of ion homeostasis -- 5.4.1 Control at transcriptional level: ENA1 -- 5.4.2 Control on protein level -- 5.4.3 Regulation of the Trk1/2p system -- 5.5 Ion transporters and membrane targeting -- 5.5.1 Targeting of P-type ATPases to the plasma membrane -- 5.5.2 Nhx1p is involved in membrane traffic out of the prevacuolar compartment -- 5.6 The genome-wide transcriptional response -- 5.7 Conclusions -- 6 Oxidative stress responses in yeast -- 6.1 Introduction -- 6.2 Effects of oxygen free radicals on biological molecules -- 6.2.1 Some concepts of free radical chemistry -- 6.3 Biological effects of oxygen free radicals in yeast -- 6.3.1 Methods for measuring the cellular toxicity of ROS -- 6.3.2 Cellular effects of ROS in S. cerevisiae -- 6.4 Antioxidant defenses and thiol redox homeostasis -- 6.4.1 Metal containing antioxidants -- 6.4.2 Thiol redox control pathways and peroxidase systems -- 6.5 Adaptive oxidative stress responses -- 6.5.1 S. cerevisiae adaptive responses to oxidative stress -- 6.5.2 The genomic response underlying oxidative stress adapted states -- 6.6 Control of S. cerevisiae oxidative stress responses -- 6.6.1 The Yap1 pathway -- 6.6.2 Skn7 as a stress response coordinator -- 6.6.3 An H2O2-inducible Msn2/4 pathway -- 6.5.4 Other regulators of the oxidative stress response in S. cerevisiae. , 6.7 Control of S. pombe oxidative stress responses -- 6.7.1 The stress-activated MAP kinase pathway -- 6.7.2 Atf1, a bZip transcription factor substrate of Spc1/Sty1 -- 6.7.3 The S. pombe Yap1 homologue Pap1 -- 6.7.4 The response regulator Prr1, a homologue of Skn7 -- 6.7.5 Two two-component phosphorelay systems contribute to the H2O2 response -- 6.8 Regulators of the oxidative stress response in other yeasts -- 6.9 Conclusions -- 7 From feast to famine -- adaptation to nutrient availability in yeast -- 7.1 Introduction -- 7.2 Setting the stage: limitation, starvation, and cell cycle checkpoints -- 7.3 Specific responses to nutrient depletion -- 7.3.1 Carbon Source Signalling -- 7.3.2 Nitrogen Source Signalling -- 7.3.3 Phosphor Limitation and Starvation -- 7.3.4 Sulphur Limitation and Starvation -- 7.4 Common responses to nutrient depletion -- 7.4.1 General Concepts -- 7.4.2 Nutrient signal integration and the control of metabolism and growth -- 7.4.3 The FGM pathway -- an integrator of responses to nutrient availability -- 7.4.4 Nutritional control by targets of rapamycin (Tor) proteins -- 7.4.5 Glycogen and Trehalose metabolism -- 7.4.6 Morphological differentiation as a response to nutrient limitation -- 7.5 Conclusions -- Index.
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 3
    Online-Ressource
    Online-Ressource
    New York, NY :Springer,
    Schlagwort(e): Molecular biology. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (429 pages)
    Ausgabe: 1st ed.
    ISBN: 9781461512035
    DDC: 571.6/4
    Sprache: Englisch
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 4
    Online-Ressource
    Online-Ressource
    Newark :John Wiley & Sons, Incorporated,
    Schlagwort(e): Systems biology. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (512 pages)
    Ausgabe: 1st ed.
    ISBN: 9783527696178
    Serie: Advanced Biotechnology Series
    DDC: 570.285
    Sprache: Englisch
    Anmerkung: Intro -- Related Titles -- Title Page -- Copyright -- Table of Contents -- List of Contributors -- About the Series Editors -- Chapter 1: Integrative Analysis of Omics Data -- Summary -- 1.1 Introduction -- 1.2 Omics Data and Their Measurement Platforms -- 1.3 Data Processing: Quality Assessment, Quantification, Normalization, and Statistical Analysis -- 1.4 Data Integration: From a List of Genes to Biological Meaning -- 1.5 Outlook and Perspectives -- References -- Chapter 2: 13C Flux Analysis in Biotechnology and Medicine -- 2.1 Introduction -- 2.2 Theoretical Foundations of 13C MFA -- 2.3 Metabolic Flux Analysis in Biotechnology -- 2.4 Metabolic Flux Analysis in Medicine -- 2.5 Emerging Challenges for 13C MFA -- 2.6 Conclusion -- Acknowledgments -- Disclosure -- References -- Chapter 3: Metabolic Modeling for Design of Cell Factories -- Summary -- 3.1 Introduction -- 3.2 Building and Refining Genome-Scale Metabolic Models -- 3.3 Strain Design Algorithms -- 3.4 Case Studies -- 3.5 Conclusions -- Acknowledgments -- References -- Chapter 4: Genome-Scale Metabolic Modeling and In silico Strain Design of Escherichia coli -- 4.1 Introduction -- 4.2 The COBRA Approach -- 4.3 History of E. coli Metabolic Modeling -- 4.4 In silico Model-Based Strain Design of E. coli Cell Factories -- 4.5 Future Directions of Model-Guided Strain Design in E. coli -- References -- Chapter 5: Accelerating the Drug Development Pipeline with Genome-Scale Metabolic Network Reconstructions -- Summary -- 5.1 Introduction -- 5.2 Metabolic Reconstructions in the Drug Development Pipeline -- 5.3 Species-Level Microbial Reconstructions -- 5.4 The Human Reconstruction -- 5.5 Community Models -- 5.6 Personalized Medicine -- 5.7 Conclusion -- References -- Chapter 6: Computational Modeling of Microbial Communities -- Summary -- 6.1 Introduction -- 6.2 Ecological Models. , 6.3 Genome-Scale Metabolic Models -- 6.4 Concluding Remarks -- References -- Chapter 7: Drug Targeting of the Human Microbiome -- Summary -- 7.1 Introduction -- 7.2 The Human Microbiome -- 7.3 Association of the Human Microbiome with Human Diseases -- 7.4 Drug Targeting of the Human Microbiome -- 7.5 Future Perspectives -- 7.6 Concluding Remarks -- Acknowledgments -- References -- Chapter 8: Toward Genome-Scale Models of Signal Transduction Networks -- 8.1 Introduction -- 8.2 The Potential of Network Reconstruction -- 8.3 Information Transfer Networks -- 8.4 Approaches to Reconstruction of ITNs -- 8.5 The rxncon Approach to ITNWR -- 8.6 Toward Quantitative Analysis and Modeling of Large ITNs -- 8.7 Conclusion and Outlook -- Acknowledgments -- References -- Chapter 9: Systems Biology of Aging -- Summary -- 9.1 Introduction -- 9.2 The Biology of Aging -- 9.3 The Mathematics of Aging -- 9.4 Future Challenges -- Conflict of Interest -- References -- Chapter 10: Modeling the Dynamics of the Immune Response -- 10.1 Background -- 10.2 Dynamics of NF-κB Signaling -- 10.3 JAK/STAT Signaling -- 10.4 Conclusions -- Acknowledgments -- References -- Chapter 11: Dynamics of Signal Transduction in Single Cells Quantified by Microscopy -- 11.1 Introduction -- 11.2 Single-Cell Measurement Techniques -- 11.3 Microscopy -- 11.4 Imaging Signal Transduction -- 11.5 Conclusions -- References -- Chapter 12: Image-Based In silico Models of Organogenesis -- Summary -- 12.1 Introduction -- 12.2 Typical Workflow of Image-Based In silico Modeling Experiments -- 12.3 Application: Image-Based Modeling of Branching Morphogenesis -- 12.4 Future Avenues -- References -- Chapter 13: Progress toward Quantitative Design Principles of Multicellular Systems -- Summary -- 13.1 Toward Quantitative Design Principles of Multicellular Systems. , 13.2 Breaking Multicellular Systems into Distinct Functional and Spatial Modules May Be Possible -- 13.3 Communication among Cells as a Means of Cell-Cell Interaction -- 13.4 Making Sense of the Combinatorial Possibilities Due to Many Ways that Cells Can Be Arranged in Space -- 13.5 From Individual Cells to Collective Behaviors of Cell Populations -- 13.6 Tuning Multicellular Behaviors -- 13.7 A New Framework for Quantitatively Understanding Multicellular Systems -- Acknowledgments -- References -- Chapter 14: Precision Genome Editing for Systems Biology - A Temporal Perspective -- Summary -- 14.1 Early Techniques in DNA Alterations -- 14.2 Zinc-Finger Nucleases -- 14.3 TALENs -- 14.4 CRISPR-Cas9 -- 14.5 Considerations of Gene-Editing Nuclease Technologies -- 14.6 Applications -- 14.7 A Focus on the Application of Genome-Engineering Nucleases on Chromosomal Rearrangements -- 14.8 Future Perspectives -- References -- Index -- End User License Agreement.
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 5
    Schlagwort(e): Forschungsbericht
    Materialart: Online-Ressource
    Seiten: Online-Ressource (56 S., 5,41 MB) , Ill., graph. Darst.
    Sprache: Deutsch
    Anmerkung: Förderkennzeichen BMBF 0327090H. - Verbund-Nr. 01012953 , Unterschiede zwischen dem gedruckten Dokument und der elektronische Ressource können nicht ausgeschlossen werden , Auch als gedr. Ausg. vorh , Systemvoraussetzungen: Acrobat reader.
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 6
    ISSN: 1520-4995
    Quelle: ACS Legacy Archives
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 7
    ISSN: 1520-4995
    Quelle: ACS Legacy Archives
    Thema: Biologie , Chemie und Pharmazie
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 8
    ISSN: 1365-2958
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie , Medizin
    Notizen: Synthesis of trehalose in the yeast Saccharomyces cerevisiae is catalysed by the trehalose-6-phosphate (Tre6P) synthase/phosphatase complex, which is composed of at least three different subunits encoded by the genes TPS1, TPS2, and TSL1. Previous studies indicated that Tps1 and Tps2 carry the catalytic activities of trehalose synthesis, namely Tre6P synthase (Tps1) and Tre6P phosphatase (Tps2), while Tsl1 was suggested to have regulatory functions. In this study two different approaches have been used to clarify the molecular composition of the trehalose synthase complex as well as the functional role of its potential subunits. Two-hybrid analyses of the in vivo interactions of Tps1, Tps2, Tsl1, and Tps3, a protein with high homology to Tsl1, revealed that both Tsl1 and Tps3 can interact with Tps1 and Tps2; the latter two proteins also interact with each other. In addition, trehalose metabolism upon heat shock was analysed in a set of 16 isogenic yeast strains carrying deletions of TPS1, TPS2, TSL1, and TPS3 in all possible combinations. These results not only confirm the previously suggested roles for Tps1 and Tps2, but also provide, for the first time, evidence that Tsl1 and Tps3 may share a common function with respect to regulation and/or structural stabilization of the Tre6P synthase/phosphatase complex in exponentially growing, heat-shocked cells.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 9
    ISSN: 1365-2958
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie , Medizin
    Notizen: Cells of the yeast Saccharomyces cerevisiae display a wide range of glucose-induced regulatory phenomena, including glucose-induced activation of the RAS-adenylate cyclase pathway and phosphatidylinositol turnover, rapid post-translational effects on the activity of different enzymes as well as long-term effects at the transcriptional level. A gene called GGS1 (for General Glucose Sensor) that is apparently required for the glucose-induced regulatory effects and several ggs1 alleles (fdp1, byp1 and cif1) has been cloned and characterized. A GGS1 homologue is present in Methanobacterium thermoautotrophicum. Yeast ggs1 mutants are unable to grow on glucose or related readily fermentable sugars, apparently owing to unrestricted influx of sugar into glycolysis, resulting in its rapid deregulation. Levels of intracellular free glucose and metabolites measured over a period of a few minutes after addition of glucose to cells of a ggsi1Δ strain are consistent with our previous suggestion of a functional interaction between a sugar transporter, a sugar kinase and the GGS1 gene product. Such a glucose-sensing system might both restrict the influx of glucose and activate several signal transduction pathways, leading to the wide range of glucose-induced regulatory phenomena. Deregulation of these pathways in ggs1 mutants might explain phenotypic defects observed in the absence of glucose, e.g. the inability of ggs1 diploids to sporulate.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
  • 10
    ISSN: 1365-2958
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Biologie , Medizin
    Notizen: A major part of the transcriptional response of yeast cells to osmotic shock is controlled by the HOG pathway and several downstream transcription factors. Sko1p is a repressor that mediates HOG pathway-dependent regulation by binding to CRE sites in target promoters. Here, we report five target genes of Hog1p–Sko1p: GRE2, AHP1, SFA1, GLR1 and YML131w. The two CREs in the GRE2 promoter function as activating sequences and, hence, bind (an) activator protein(s). However, the two other yeast CRE-binding proteins, Aca1p and Aca2p, are not involved in regulation of the GRE2 promoter under osmotic stress. In the absence of the co-repressor complex Tup1p–Ssn6p/Cyc8p, which is recruited by Sko1p, stimulation by osmotic stress is still observed. These data indicate that Sko1p is not only required for repression, but also involved in induction upon osmotic shock. All five Sko1p targets encode oxidoreductases with demonstrated or predicted roles in repair of oxidative damage. Altered basal expression levels of these genes in hog1Δ and sko1Δ mutants may explain the oxidative stress phenotypes of these mutants. All five Sko1p target genes are induced by oxidative stress, and induction involves Yap1p. Although Sko1p and Yap1p appear to mediate osmotic and oxidative stress responses independently, Sko1p may affect Yap1p promoter access or activity. The five Sko1p target genes described here are suitable models for studying the interplay between osmotic and oxidative responses at the molecular and physiological levels.
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
    BibTip Andere fanden auch interessant ...
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...