Mon. 22 Oct, 2012 - Sun. 28 Oct, 2012
Mon. 22 Oct, 2012
Half-time Seminar - Edward Businge
Mon. 22 Oct, 2012 15:00 - 16:00
UPSC Seminar Series
Half-time Seminar
Speaker:
Edward Businge
Title: The regulation of embryo development in conifers
Place: Lilla hörsalen, KB3A9, KBC
Half-time Seminar
Speaker:
Edward Businge
Title: The regulation of embryo development in conifers
Place: Lilla hörsalen, KB3A9, KBC
Thu. 25 Oct, 2012
Seminar - Martin Hagemann: Evolutionary origin of photorespiration
Thu. 25 Oct, 2012 14:00 - 15:00
Seminar
Speaker:
Martin Hagemann
Universität Rostock, Institut für Biowissenschaften, Abteilung Pflanzenphysiologie
Title
Evolutionary origin of photorespiration: Phylogenetic and biochemical studies of enzymes involved in the 2-phosphoglycolate metabolism
Place: Lilla hörsalen, KB3A9
Abtract:The photorespiratory pathway is essential for organisms performing oxygenic photosynthesis, cyanobacteria, algae and plants, in the present day O2-containing atmosphere. The presence of a plant-like 2-phosphoglycolate cycle in cyanobacteria indicated that not only genes of oxygenic photosynthesis but also genes encoding photorespiratory enzymes were endosymbiotically conveyed from ancient cyanobacteria to eukaryotic oxygenic phototrophs. BlastP analyses with plant photorespiratory proteins identified several proteins in cyanobacteria and algae with surprisingly high sequence similarities. To verify that not only the sequence but also the biochemical activity of these enzymes is conserved, selected proteins from the cyanobacteria Synechocystis PCC 6803, Anabaena PCC 7120 and Cyanothece sp. PCC 7822, as well as from the algae Chlamydomonas reinhardtii and Cyanidioschyzon merolae were overexpressed in E. coli and biochemical analyzed. As examples, data will be presented on our recent analyses of glycolate oxidases and hydroxypyruvate reductase, which allowed to date the origin of photorespiration back to the protoalgae
Speaker:
Martin Hagemann
Universität Rostock, Institut für Biowissenschaften, Abteilung Pflanzenphysiologie
Title
Evolutionary origin of photorespiration: Phylogenetic and biochemical studies of enzymes involved in the 2-phosphoglycolate metabolism
Place: Lilla hörsalen, KB3A9
Abtract:The photorespiratory pathway is essential for organisms performing oxygenic photosynthesis, cyanobacteria, algae and plants, in the present day O2-containing atmosphere. The presence of a plant-like 2-phosphoglycolate cycle in cyanobacteria indicated that not only genes of oxygenic photosynthesis but also genes encoding photorespiratory enzymes were endosymbiotically conveyed from ancient cyanobacteria to eukaryotic oxygenic phototrophs. BlastP analyses with plant photorespiratory proteins identified several proteins in cyanobacteria and algae with surprisingly high sequence similarities. To verify that not only the sequence but also the biochemical activity of these enzymes is conserved, selected proteins from the cyanobacteria Synechocystis PCC 6803, Anabaena PCC 7120 and Cyanothece sp. PCC 7822, as well as from the algae Chlamydomonas reinhardtii and Cyanidioschyzon merolae were overexpressed in E. coli and biochemical analyzed. As examples, data will be presented on our recent analyses of glycolate oxidases and hydroxypyruvate reductase, which allowed to date the origin of photorespiration back to the protoalgae
Fri. 26 Oct, 2012
Thesis Defence - Tania Tibiletti - Department of Chemistry
Fri. 26 Oct, 2012 10:00 - 12:00
Thesis Defence - Tania Tibiletti - Department of Chemistry
Title: Functional studies on the Light-harvesting-Like (LiL) proteins in Cyanobacteria and Cryptophytes
Opponent: Prof. Dr. Martin Hagemann, University of Rostock, Plant Physiology, Germany.
Supervisor: Christiane Funk
Lilla hörsalen , KB3A9
Title: Functional studies on the Light-harvesting-Like (LiL) proteins in Cyanobacteria and Cryptophytes
Opponent: Prof. Dr. Martin Hagemann, University of Rostock, Plant Physiology, Germany.
Supervisor: Christiane Funk
Lilla hörsalen , KB3A9