PMID- 25640723 OWN - NLM STAT- MEDLINE DCOM- 20151026 LR - 20150202 IS - 1879-0909 (Electronic) IS - 0141-0229 (Linking) VI - 69 DP - 2015 Feb TI - Enhancing GDP-fucose production in recombinant Escherichia coli by metabolic pathway engineering. PG - 38-45 LID - S0141-0229(14)00211-7 [pii] LID - 10.1016/j.enzmictec.2014.12.001 [doi] AB - Guanosine 5'-diphosphate (GDP)-fucose is the indispensible donor substrate for fucosyltransferase-catalyzed synthesis of fucose-containing biomolecules, which have been found involving in various biological functions. In this work, the salvage pathway for GDP-fucose biosynthesis from Bacterioides fragilis was introduced into Escherichia coli. Besides, the biosynthesis of guanosine 5'-triphosphate (GTP), an essential substrate for GDP-fucose biosynthesis, was enhanced via overexpression of enzymes involved in the salvage pathway of GTP biosynthesis. The production capacities of metabolically engineered strains bearing different combinations of recombinant enzymes were compared. The shake flask fermentation of the strain expressing Fkp, Gpt, Gmk and Ndk obtained the maximum GDP-fucose content of 4.6 +/- 0.22 mumol/g (dry cell mass), which is 4.2 fold that of the strain only expressing Fkp. Through fed-batch fermentation, the GDP-fucose content further rose to 6.6 +/- 0.14 mumol/g (dry cell mass). In addition to a better productivity than previous fermentation processes based on the de novo pathway for GDP-fucose biosynthesis, the established schemes in this work also have the advantage to be a potential avenue to GDP-fucose analogs encompassing chemical modification on the fucose residue. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Zhai, Yafei AU - Zhai Y AD - National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China; The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China. FAU - Han, Donglei AU - Han D AD - National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China; The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China. FAU - Pan, Ying AU - Pan Y AD - The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China. FAU - Wang, Shuaishuai AU - Wang S AD - National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China; The State Key Laboratory of Microbial Technology and School of Life Science, Shandong University, Jinan, Shandong 250100, People's Republic of China. FAU - Fang, Junqiang AU - Fang J AD - National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China. FAU - Wang, Peng AU - Wang P AD - National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China. FAU - Liu, Xian-wei AU - Liu XW AD - National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China. Electronic address: xianweiliu@sdu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141209 PL - United States TA - Enzyme Microb Technol JT - Enzyme and microbial technology JID - 8003761 RN - 0 (Bacterial Proteins) RN - 0 (Recombinant Proteins) RN - 15839-70-0 (Guanosine Diphosphate Fucose) RN - EC 2.7.1.- (Phosphotransferases (Alcohol Group Acceptor)) RN - EC 2.7.1.52 (fucokinase) RN - EC 2.7.7.- (Nucleotidyltransferases) RN - EC 2.7.7.30 (fucose-1-phosphate guanylyltransferase) SB - IM MH - Bacterial Proteins/genetics/metabolism MH - Bacteroides fragilis/enzymology/genetics MH - Escherichia coli/genetics/growth & development/metabolism MH - Fermentation MH - Genetic Engineering MH - Guanosine Diphosphate Fucose/*biosynthesis MH - Metabolic Engineering MH - Metabolic Networks and Pathways MH - Nucleotidyltransferases/genetics/metabolism MH - Phosphotransferases (Alcohol Group Acceptor)/genetics/metabolism MH - Recombinant Proteins/genetics/metabolism OTO - NOTNLM OT - Escherichia coli OT - GDP-fucose OT - Guanosine nucleotides OT - Metabolic engineering OT - Salvage pathway EDAT- 2015/02/03 06:00 MHDA- 2015/10/27 06:00 CRDT- 2015/02/03 06:00 PHST- 2014/08/06 00:00 [received] PHST- 2014/10/10 00:00 [revised] PHST- 2014/12/01 00:00 [accepted] PHST- 2015/02/03 06:00 [entrez] PHST- 2015/02/03 06:00 [pubmed] PHST- 2015/10/27 06:00 [medline] AID - S0141-0229(14)00211-7 [pii] AID - 10.1016/j.enzmictec.2014.12.001 [doi] PST - ppublish SO - Enzyme Microb Technol. 2015 Feb;69:38-45. doi: 10.1016/j.enzmictec.2014.12.001. Epub 2014 Dec 9.