TY - JOUR
T1 - Metabolic Engineering toward Sustainable Production of Nylon-6
AU - Turk, Stefan C H J
AU - Kloosterman, Wigard P.
AU - Ninaber, Dennis K.
AU - Kolen, Karin P A M
AU - Knutova, Julia
AU - Suir, Erwin
AU - Schürmann, Martin
AU - Raemakers-Franken, Petronella C.
AU - Müller, Monika
AU - De Wildeman, Stefaan M A
AU - Raamsdonk, Leonie M.
AU - Van Der Pol, Ruud
AU - Wu, Liang
AU - Temudo, Margarida F.
AU - Van Der Hoeven, Rob A M
AU - Akeroyd, Michiel
AU - Van Der Stoel, Roland E.
AU - Noorman, Henk J.
AU - Bovenberg, Roel A L
AU - Trefzer, Axel C.
PY - 2016/1/15
Y1 - 2016/1/15
N2 - Nylon-6 is a bulk polymer used for many applications. It consists of the non-natural building block 6-aminocaproic acid, the linear form of caprolactam. Via a retro-synthetic approach, two synthetic pathways were identified for the fermentative production of 6-aminocaproic acid. Both pathways require yet unreported novel biocatalytic steps. We demonstrated proof of these bioconversions by in vitro enzyme assays with a set of selected candidate proteins expressed in Escherichia coli. One of the biosynthetic pathways starts with 2-oxoglutarate and contains bioconversions of the ketoacid elongation pathway known from methanogenic archaea. This pathway was selected for implementation in E. coli and yielded 6-aminocaproic acid at levels up to 160 mg/L in lab-scale batch fermentations. The total amount of 6-aminocaproic acid and related intermediates generated by this pathway exceeded 2 g/L in lab-scale fed-batch fermentations, indicating its potential for further optimization toward large-scale sustainable production of nylon-6.
AB - Nylon-6 is a bulk polymer used for many applications. It consists of the non-natural building block 6-aminocaproic acid, the linear form of caprolactam. Via a retro-synthetic approach, two synthetic pathways were identified for the fermentative production of 6-aminocaproic acid. Both pathways require yet unreported novel biocatalytic steps. We demonstrated proof of these bioconversions by in vitro enzyme assays with a set of selected candidate proteins expressed in Escherichia coli. One of the biosynthetic pathways starts with 2-oxoglutarate and contains bioconversions of the ketoacid elongation pathway known from methanogenic archaea. This pathway was selected for implementation in E. coli and yielded 6-aminocaproic acid at levels up to 160 mg/L in lab-scale batch fermentations. The total amount of 6-aminocaproic acid and related intermediates generated by this pathway exceeded 2 g/L in lab-scale fed-batch fermentations, indicating its potential for further optimization toward large-scale sustainable production of nylon-6.
KW - 6-aminocaproic acid
KW - adipate
KW - caprolactam
KW - metabolic engineering
KW - nylon-6
KW - α-ketopimelate
UR - https://www.scopus.com/pages/publications/84954409658
U2 - 10.1021/acssynbio.5b00129
DO - 10.1021/acssynbio.5b00129
M3 - Article
C2 - 26511532
AN - SCOPUS:84954409658
SN - 2161-5063
VL - 5
SP - 65
EP - 73
JO - ACS Synthetic Biology
JF - ACS Synthetic Biology
IS - 1
ER -