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Studies of the light-induced signal transduction in Agrobacterium fabrum

El Kurdi, Afaf

Abstract (englisch):

Organisms regardless of their origin or type, monitor their environment and respond differently to any environmental changes that occur. These changes not only can alter biochemical reactions that are taking part in the signal transmission, but also the properties of the proteins involved. Therefore, biochemical, or biophysical analyses are a useful approach to understand bacterial cellular mechanisms such as the ones in the bacterium Agrobacterium fabrum (former Agrobacterium tumefaciens) and its phytochrome system.
The biliprotein photoreceptors Agp1 and Agp2, found in A. fabrum, exhibit opposite spectral characteristics regarding light-induced and thermal conversion between the red absorbing Pr form and the far-red absorbing Pfr form and could control various cellular mechanisms.
These phytochromes have been shown to be able to act together, regulating various mechanisms or processes, such as bacterial conjugation, plant infection and cell growth, in addition to the phosphorylation, and their photoconversion ability.
Understanding a signal transduction pathway requires the understanding of the function of proteins, which in turn requires a detailed knowledge of their structure, dynamics, and the different conformational states they can adopt. ... mehr


Volltext §
DOI: 10.5445/IR/1000132671
Veröffentlicht am 01.06.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Botanisches Institut (BOTANIK)
Publikationstyp Hochschulschrift
Publikationsdatum 01.06.2021
Sprache Englisch
Identifikator KITopen-ID: 1000132671
Verlag Karlsruher Institut für Technologie (KIT)
Umfang XII, 142 S.
Art der Arbeit Dissertation
Fakultät Fakultät für Chemie und Biowissenschaften (CHEM-BIO)
Institut Botanisches Institut (BOTANIK)
Prüfungsdatum 15.04.2021
Schlagwörter Agrobacterium fabrum, Phytochromes, Anisotropy, Protein-Protein Interaction, TraA, conjugation, Kinase activity, FRET
Referent/Betreuer Lamparter, T.
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