Highly Efficient Synthesis of (R)-3-Quinuclidinol in a Space–Time Yield of 916 g L–1 d–1 Using a New Bacterial Reductase ArQR

2013 ◽  
Vol 15 (19) ◽  
pp. 4917-4919 ◽  
Author(s):  
Wen-Xia Zhang ◽  
Guo-Chao Xu ◽  
Lei Huang ◽  
Jiang Pan ◽  
Hui-Lei Yu ◽  
...  
RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 2325-2331 ◽  
Author(s):  
Yitong Chen ◽  
Baodi Ma ◽  
Songshuang Cao ◽  
Xiaomei Wu ◽  
Yi Xu

A simple and efficient process for the synthesis of optically active (S)-N-boc-3-hydroxy piperidine was developed using the “designer cells” co-expressing alcohol dehydrogenase and glucose dehydrogenase.


ChemInform ◽  
2015 ◽  
Vol 46 (18) ◽  
pp. no-no
Author(s):  
Rui-Jie Chen ◽  
Gao-Wei Zheng ◽  
Yan Ni ◽  
Bu-Bing Zeng ◽  
Jian-He Xu

2014 ◽  
Vol 25 (23) ◽  
pp. 1501-1504 ◽  
Author(s):  
Rui-Jie Chen ◽  
Gao-Wei Zheng ◽  
Yan Ni ◽  
Bu-Bing Zeng ◽  
Jian-He Xu

2015 ◽  
Vol 5 (8) ◽  
pp. 4048-4054 ◽  
Author(s):  
Xue-Cheng Jiao ◽  
Jiang Pan ◽  
Guo-Chao Xu ◽  
Xu-Dong Kong ◽  
Qi Chen ◽  
...  

A novel 2-deoxyribose-5-phosphate aldolase (LbDERA) was identified from Lactobacillus brevis, with high activity, excellent thermostability and high tolerance against aldehyde substrates.


2014 ◽  
Vol 34 (1) ◽  
pp. 243-250
Author(s):  
Jianghong DING ◽  
Le XU ◽  
Hao XU ◽  
Haihong WU ◽  
Yueming LIU ◽  
...  

2013 ◽  
Vol 17 (3) ◽  
pp. 283-295 ◽  
Author(s):  
Jadwiga Soloducho ◽  
Joanna Cabaj ◽  
Kamila Olech ◽  
Przemyslaw Data ◽  
Mieczyslaw Lapkowski

2011 ◽  
Vol 24 (6) ◽  
pp. 745-752 ◽  
Author(s):  
Song-bai Qiu ◽  
Yong Xu ◽  
Tong-qi Ye ◽  
Fei-yan Gong ◽  
Zhi Yang ◽  
...  

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Langxing Liao ◽  
Yonghui Zhang ◽  
Yali Wang ◽  
Yousi Fu ◽  
Aihui Zhang ◽  
...  

Abstract Background Biosynthesis of l-tert-leucine (l-tle), a significant pharmaceutical intermediate, by a cofactor regeneration system friendly and efficiently is a worthful goal all the time. The cofactor regeneration system of leucine dehydrogenase (LeuDH) and glucose dehydrogenase (GDH) has showed great coupling catalytic efficiency in the synthesis of l-tle, however the multi-enzyme complex of GDH and LeuDH has never been constructed successfully. Results In this work, a novel fusion enzyme (GDH–R3–LeuDH) for the efficient biosynthesis of l-tle was constructed by the fusion of LeuDH and GDH mediated with a rigid peptide linker. Compared with the free enzymes, both the environmental tolerance and thermal stability of GDH–R3–LeuDH had a great improved since the fusion structure. The fusion structure also accelerated the cofactor regeneration rate and maintained the enzyme activity, so the productivity and yield of l-tle by GDH–R3–LeuDH was all enhanced by twofold. Finally, the space–time yield of l-tle catalyzing by GDH–R3–LeuDH whole cells could achieve 2136 g/L/day in a 200 mL scale system under the optimal catalysis conditions (pH 9.0, 30 °C, 0.4 mM of NAD+ and 500 mM of a substrate including trimethylpyruvic acid and glucose). Conclusions It is the first report about the fusion of GDH and LeuDH as the multi-enzyme complex to synthesize l-tle and reach the highest space–time yield up to now. These results demonstrated the great potential of the GDH–R3–LeuDH fusion enzyme for the efficient biosynthesis of l-tle.


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