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Enzymatic network for production of ether amines from alcohols
Author(s) -
Palacio Cyntia M.,
Crismaru Ciprian G.,
Bartsch Sebastian,
Navickas Vaidotas,
Ditrich Klaus,
Breuer Michael,
Abu Rohana,
Woodley John M.,
Baldenius Kai,
Wu Bian,
Janssen Dick B.
Publication year - 2016
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.25954
Subject(s) - transamination , chemistry , amination , ether , substrate (aquarium) , organic chemistry , cofactor , enzyme , alcohol , ammonia , ammonium , combinatorial chemistry , catalysis , oceanography , geology
ABSTRACT We constructed an enzymatic network composed of three different enzymes for the synthesis of valuable ether amines. The enzymatic reactions are interconnected to catalyze the oxidation and subsequent transamination of the substrate and to provide cofactor recycling. This allows production of the desired ether amines from the corresponding ether alcohols with inorganic ammonium as the only additional substrate. To examine conversion, individual and overall reaction equilibria were established. Using these data, it was found that the experimentally observed conversions of up to 60% observed for reactions containing 10 mM alcohol and up to 280 mM ammonia corresponded well to predicted conversions. The results indicate that efficient amination can be driven by high concentrations of ammonia and may require improving enzyme robustness for scale‐up. Biotechnol. Bioeng. 2016;113: 1853–1861. © 2016 Wiley Periodicals, Inc.