Sökning: "Metagenome"

Visar resultat 16 - 20 av 20 avhandlingar innehållade ordet Metagenome.

1. 16. Evolutionary transitions across the tree of life : Phylogenomic case studies in environmental archaea, bacteria and eukaryotes

   Författare :Max Emil Schön; Thijs J. G. Ettema; Fabien Burki; David Moreira; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Evolutionary transitions; environmental sequencing; metagenomics; single-cell genomics; phylogenomics; haloarchaea; Hikarchaeia; Rickettsiales; Picozoa; plastid evolution; Biologi med inriktning mot molekylär evolution; Biology with specialization in Molecular Evolution;

   Sammanfattning : Microbes form the majority of life on Earth, but have been systematically underrepresented in historical research. The sequencing revolutions of the last two decades have completely changed the way we can study microbial genomic information, giving us the means to probe ever deeper into their evolution. LÄS MER

3. 17. Non-cyanobacterial nitrogen fixation insights in humic freshwater lakes and ponds

   Författare :Leyden Fernandez-Vidal; Stefan Bertilsson; Sari Peura; David Walsh; Uppsala universitet; []
   Nyckelord :humic lakes; thaw ponds; non-cyanobacterial diazotrophs; nitrogen fixation; nitrogenase;

   Sammanfattning : The biological basis of nitrogen fixation beyond the canonical role of Cyanobacteria is not well understood in freshwater ecosystems. To address this gap in knowledge, the main objective of this thesis is to study non-cyanobacterial nitrogen fixation in freshwater lakes and ponds. LÄS MER

4. 18. Effects and Dynamics of Insertion Sequences in the Evolution of Cyanobacteria

   Författare :Carl Theoden Vigil Stenman; Birgitta Bergman; Andersson Siv; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cyanobacteria; Insertion Sequences; Evolution; Plant Physiology; växtfysiologi;

   Sammanfattning : Cyanobacteria are globally widespread and ecologically highly significant photoautotrophic microorganisms, with diverse geno- and phenotypic characters unprecedented among prokaryotes. This phylum embraces representatives with an exclusive adaptability in highly specialized environments, from oligotrophic ocean waters to the interior of cells in symbiotic plants, the most extreme being the chloroplasts. LÄS MER

5. 19. Machine Learning methods in shotgun proteomics

   Författare :Patrick Truong; Lukas Käll; Peter Nilsson; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mass spectrometry protein summarization Bayesian hierarchical modelling label-free quantification data-independent acquisition mass spectrometry; benchmark mathematical methods; transformers; computational proteomics; proteomics; bioinformatics; bert; ms2 intensity; probabilistic modelling; Biotechnology; Bioteknologi;

   Sammanfattning : As high-throughput biology experiments generate increasing amounts of data, the field is naturally turning to data-driven methods for the analysis and extraction of novel insights. These insights into biological systems are crucial for understanding disease progression, drug targets, treatment development, and diagnostics methods, ultimately leading to improving human health and well-being, as well as, deeper insight into cellular biology. LÄS MER

7. 20. Biocatalytic transamination with recombinant Saccharomyces cerevisiae: Challenges and opportunities

   Författare :Nora Weber; Teknisk mikrobiologi; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Saccharomyces cerevisiae; transamination; whole-cell biocatalysis; pyruvate; PLP; thiamine; reduction;

   Sammanfattning : Chiral building blocks are important molecules for synthesis of fine chemicals and pharmaceuticals. Biocatalysis has gained in relevance over traditional organic methods for synthesis of chiral compounds, as reactions can be performed at high enantio-selectivity and purity with environmentally friendly, simple, and cheap methods. LÄS MER