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@ARTICLE{Wohlers:902929,
author = {Wohlers, Karen and Wirtz, Astrid and Reiter, Alexander and
Oldiges, Marco and Baumgart, Meike and Bott, Michael},
title = {{M}etabolic engineering of {P}seudomonas putida for
production of the natural sweetener 5‐ketofructose from
fructose or sucrose by periplasmic oxidation with a
heterologous fructose dehydrogenase},
journal = {Microbial biotechnology},
volume = {14},
number = {6},
issn = {1751-7907},
address = {Oxford},
publisher = {Wiley-Blackwell},
reportid = {FZJ-2021-04682},
pages = {2592 - 2604},
year = {2021},
abstract = {5-Ketofructose (5-KF) is a promising low-calorie natural
sweetener with the potential to reduce health problems
caused by excessive sugar consumption. It is formed by
periplasmic oxidation of fructose by fructose dehydrogenase
(Fdh) of Gluconobacter japonicus, a membrane-bound
three-subunit enzyme containing FAD and three haemes c as
prosthetic groups. This study aimed at establishing
Pseudomonas putida KT2440 as a new cell factory for 5-KF
production, as this host offers a number of advantages
compared with the established host Gluconobacter oxydans.
Genomic expression of the fdhSCL genes from G. japonicus
enabled synthesis of functional Fdh in P. putida and
successful oxidation of fructose to 5-KF. In a batch
fermentation, 129 g l−1 5-KF were formed from
150 g l−1 fructose within 23 h, corresponding to a
space-time yield of 5.6 g l−1 h−1. Besides
fructose, also sucrose could be used as substrate for 5-KF
production by plasmid-based expression of the invertase gene
inv1417 from G. japonicus. In a bioreactor cultivation
with pulsed sucrose feeding, 144 g 5-KF were produced from
358 g sucrose within 48 h. These results demonstrate
that P. putida is an attractive host for 5-KF production.},
cin = {IBG-1},
ddc = {610},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {2172 - Utilization of renewable carbon and energy sources
and engineering of ecosystem functions (POF4-217)},
pid = {G:(DE-HGF)POF4-2172},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34437751},
UT = {WOS:000688662100001},
doi = {10.1111/1751-7915.13913},
url = {https://juser.fz-juelich.de/record/902929},
}