Διάλεξη της Prof. Karen Trchounian

Από ΓΡΑΜΜΑΤΕΙΑ ΤΜΗΜΑΤΟΣ: Ελ. Αθανασιάδη

 

Εκ μέρους του Επίκουρου Καθηγητή κ. Ιερ. Ζωιδάκη δημοσιεύεται η ακόλουθη ανακοίνωση:

Την Τετάρτη 18/10 13:30-15:00 στην Αίθουσα Διδασκαλίας «Πέτρος Βλάχος» θα λάβει χώρα διάλεξη της Prof. Karen Trchounian με θέμα: 

"Regulation of formate and hydrogen metabolism in E. coli"

Όλα τα μέλη του Τμήματος είναι ευπρόσδεκτα.

 

Abstract

Escherichia coli performs mixed acid fermentation and produces formate and hydrogen gas as fermentation end products. Formate is first transported out of the cells and further taken up and oxidized to hydrogen and carbon dioxide via formate hydrogen lyase complex. It consists of hydrogenases and formate. E. coli four hydrogenase enzymes are membrane bound and reversible depending on external pH and carbon source and its concentration. It has been shown that proton and potassium ions fluxes are important for regulation of formate and hydrogen metabolism and it is regulated by proton FOF1-ATPase.

Hydrogenases are applied for alternative energy such as hydrogen gas production via utilization of various agroindustrial wastes and their mixtures. Especially, during coffee waste utilization 14 L of hydrogen gas production has been achieved in genetically engineered mutant. To further improve the hydrogen production yield it is important to understand the bioenergetics of fermentation and especially role of proton ATPase and secondary transport systems in formate and hydrogen metabolism.

 

Short CV

Prof. Karen Trchounian graduated from Yerevan State University (YSU), Yerevan, Armenia in 2011. He obtained his MSc from YSU in 2013 and Doctor of Science degree in 2017. Currently, he is Director of Research Institute of Biology, Head of Research Laboratory of Microbiology, Bioenergetics and Biotechnology and Director of YSU Microbial Biotechnologies and Biofuel Innovation Center and holding professor position at the Department of Biochemistry, Microbiology and Biotechnology. He has visited Martin-Luther University of Halle-Wittenberg, University of Konstanz, Wageningen University and others for short and long term research stays. He has lectured in US, EU, Japan and other countries as invited lecturer. His main interests are Environmental regulation of bacterial growth and metabolism, hydrogenase activity and hydrogen production by bacteria, bioenergetics of fermentation, waste to biobased products technologies.

 

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