Two distinct glyceraldehyde-3-phosphate dehydrogenases in glycolysis and gluconeogenesis in the archaeon Haloferax volcanii.
In: FEBS letters, Jg. 592 (2018-05-01), Heft 9, S. 1524-1534
Online
editorialOpinion
Zugriff:
The halophilic archaeon Haloferax volcanii degrades glucose via the semiphosphorylative Entner-Doudoroff pathway and can also grow on gluconeogenic substrates. Here, the enzymes catalysing the conversion of glyceraldehyde-3-phosphate (GAP) to 3-phosphoglycerate were analysed. The genome contains the genes gapI and gapII encoding two putative GAP dehydrogenases, and pgk encoding phosphoglycerate kinase (PGK). We show that gapI is functionally involved in sugar catabolism, whereas gapII is involved in gluconeogenesis. For pgk, an amphibolic function is indicated. This is the first report of the functional involvement of a phosphorylating glyceraldehyde-3-phosphate dehydrogenase and PGK in sugar catabolism in archaea. Phylogenetic analyses indicate that the catabolic gapI from H. volcanii is acquired from bacteria via lateral genetransfer, whereas the anabolic gapII as well as pgk are of archaeal origin.
(© 2018 Federation of European Biochemical Societies.)
Titel: |
Two distinct glyceraldehyde-3-phosphate dehydrogenases in glycolysis and gluconeogenesis in the archaeon Haloferax volcanii.
|
---|---|
Autor/in / Beteiligte Person: | Tästensen, JB ; Schönheit, P |
Link: | |
Zeitschrift: | FEBS letters, Jg. 592 (2018-05-01), Heft 9, S. 1524-1534 |
Veröffentlichung: | Jan. 2016- : West Sussex : John Wiley & Sons Ltd. ; <i>Original Publication</i>: Amsterdam, North-Holland on behalf of the Federation of European Biochemical Societies., 2018 |
Medientyp: | editorialOpinion |
ISSN: | 1873-3468 (electronic) |
DOI: | 10.1002/1873-3468.13037 |
Schlagwort: |
|
Sonstiges: |
|