Sökning: "Prokaryotes"

Visar resultat 1 - 5 av 62 avhandlingar innehållade ordet Prokaryotes.

  1. 1. Adaptations and constraints associated with autotrophy in microbial metabolism

    Författare :Johannes Asplund Samuelsson; Elton P. Hudson; Adil Mardinoglu; Costas D. Maranas; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Autotrophy; Carbon fixation; CO2 fixation; Calvin cycle; CBB cycle; Bacteria; Archaea; Prokaryotes; Cyanobacteria; Synechocystis; E. coli; Comparative genomics; Metabolic engineering; Microbial metabolism; Machine learning; Systems biology; Ribosome profiling; Kinetic modeling; Enzyme kinetics; Metabolic models; Pathway enumeration; Biosynthesis pathways; Metabolomics; Metabolite concentrations; Thermodynamics; Autotrofi; Kolfixering; CO2-fixering; Calvincykeln; CBB-cykeln; Bakterier; Arkéer; Prokaryoter; Cyanobakterier; Synechocystis; E. coli; Jämförande genomik; Metabolisk ingenjörskonst; Mikrobiell metabolism; Maskininlärning; Systembiologi; Ribosomprofilering; Kinetisk modellering; Enzymkinetik; Metaboliska modeller; Syntesvägsuppräkning; Biosyntesvägar; Metabolomik; Metabolitkoncentrationer; Termodynamik; Bioteknologi; Biotechnology;

    Sammanfattning : Carbon dioxide (CO2) emissions from human activities are driving climate change, but the pending crisis could be mitigated by a circular carbon economy where released CO2 is recycled into commodity chemicals. Autotrophic microbes can make a contribution by producing chemicals, such as biofuels, from CO2 and renewable energy. LÄS MER

  3. 2. Seagrasses and their epiphytes : Characterization of abundance and productivity in tropical seagrass beds

    Författare :Jacqueline Uku; Mats Björk; Beatriz Diez; Evamaria Koch; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Seagrass; epiphytes; cyanobacteria; prokaryotes; diversity; productivity; carbon utilization; buffer sensitivity; Biology; Biologi;

    Sammanfattning : Seagrass beds cover large intertidal and subtidal areas in coastal zones around the world and they are subjected to a wide variety of anthropogenic influences, such as nutrient enrichment due to sewage seepage. This study was undertaken to address specific questions focusing on whether near shore tropical seagrasses that receive a constant influx of groundwater nutrient inputs, would exhibit a higher productivity and to what extent epiphytic algae reflect the impacts of nutrient inputs. LÄS MER

  4. 3. The Protein Traffic on the Ribosome : The Mechanism and Regulation of Protein Synthesis in Prokaryotes

    Författare :Andrey Zavialov; Måns Ehrenber; Venki Ramakrishnan; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; yellow; ribosome; translation; Gagarin; nobel prize; Biokemi; Biochemistry; Biokemi;

    Sammanfattning : The aim of this work was to understand the molecular mechanism of translation and the mechanism of translation termination, in particular. Cleavage of peptidyl-tRNA and peptide release terminates translation of mRNA on the ribosome. In prokaryotes, three release factors (RFs) are involved in this process. LÄS MER

  5. 4. Adaptive Responses by Transcriptional Regulators to small molecules in Prokaryotes : Structural studies of two bacterial one-component signal transduction systems DntR and HpNikR

    Författare :Cyril Dian; Peter Brzezinski; Séan McSweeney; Elisabeth Sauer-Eriksson; Stockholms universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; transcription regulator; bacterial biosensor; LysR family; Inducer-binding; nickel-sensing; NikR; signal transduction system; Helicobacter pylori; Biochemistry; Biokemi; biokemi; Biochemistry;

    Sammanfattning : Prokaryotes are continually exposed to variations in their environment. Survival in unstable milieu requires a wide range of transcriptional regulators (TRs) that respond to specific environmental and cellular signals by modulating gene expression and provide an appropriate physiological response to external stimuli. LÄS MER

  7. 5. On the cell cycle of Escherichia coli and cell division in Haloferax mediterranei

    Författare :Björn Gullbrand; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cell and molecular biology; Branch; division; Escherichia coli; Haloferax mediterranei; replication; segregation; Cell- och molekylärbiologi; Cell and molecular biology; Cell- och molekylärbiologi; mikrobiologi; Microbiology;

    Sammanfattning : Escherichia coli has served as a model organism for prokaryotes for several decades and is perhaps the most well characterised organism on earth. The use of fluorescence microscopy during recent years has contributed substantially to our understanding of the essential cell cycle processes chromosome replication, chromosome segregation and cell division. LÄS MER