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Choi Y, Kim YH. Regulatory role of cysteines in (2R, 3R)-butanediol dehydrogenase BdhA of Bacillus velezensis strain GH1-13. J Microbiol 2022; 60:411-418. [DOI: 10.1007/s12275-022-2018-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 01/28/2022] [Accepted: 02/03/2022] [Indexed: 11/29/2022]
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Su WB, Li FL, Li XY, Fan XM, Liu RJ, Zhang YW. Using galactitol dehydrogenase coupled with water-forming NADH oxidase for efficient enzymatic synthesis of L-tagatose. N Biotechnol 2021; 62:18-25. [PMID: 33460816 DOI: 10.1016/j.nbt.2021.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 01/05/2021] [Accepted: 01/11/2021] [Indexed: 10/22/2022]
Abstract
L-Tagatose, a promising building block in the production of many value-added chemicals, is generally produced by chemical routes with a low yield, which may not meet the increasing demands. Synthesis of l-tagatose by enzymatic oxidation of d-galactitol has not been applied on an industrial scale because of the high cofactor costs and the lack of efficient cofactor regeneration methods. In this work, an efficient and environmentally friendly enzymatic method containing a galactitol dehydrogenase for d-galactitol oxidation and a water-forming NADH oxidase for regeneration of NAD+ was first designed and used for l-tagatose production. Supplied with only 3 mM NAD+, subsequent reaction optimization facilitated the efficient transformation of 100 mM of d-galactitol into l-tagatose with a yield of 90.2 % after 12 h (obtained productivity: 7.61 mM.h-1). Compared with the current chemical and biocatalytic methods, the strategy developed avoids by-product formation and achieves the highest yield of l-tagatose with low costs. It is expected to become a cleaner and more promising route for industrial biosynthesis of l-tagatose.
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Affiliation(s)
- Wen-Bin Su
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Fei-Long Li
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Xue-Yong Li
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Xiao-Man Fan
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Rui-Jiang Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Ye-Wang Zhang
- School of Pharmacy, Jiangsu University, Zhenjiang, 212013, People's Republic of China; College of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou, 535011, People's Republic of China.
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Kutyshenko VP, Mikoulinskaia GV, Chernyshov SV, Yegorov AY, Prokhorov DA, Uversky VN. Effect of C-terminal His-tag and purification routine on the activity and structure of the metalloenzyme, l-alanyl-d-glutamate peptidase of the bacteriophage T5. Int J Biol Macromol 2019; 124:810-818. [DOI: 10.1016/j.ijbiomac.2018.11.219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 11/07/2018] [Accepted: 11/24/2018] [Indexed: 02/01/2023]
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4
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Benavente R, Esteban-Torres M, Kohring GW, Cortés-Cabrera Á, Sánchez-Murcia PA, Gago F, Acebrón I, de las Rivas B, Muñoz R, Mancheño JM. Enantioselective oxidation of galactitol 1-phosphate by galactitol-1-phosphate 5-dehydrogenase from Escherichia coli. ACTA ACUST UNITED AC 2015; 71:1540-54. [PMID: 26143925 DOI: 10.1107/s1399004715009281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 05/15/2015] [Indexed: 11/11/2022]
Abstract
Galactitol-1-phosphate 5-dehydrogenase (GPDH) is a polyol dehydrogenase that belongs to the medium-chain dehydrogenase/reductase (MDR) superfamily. It catalyses the Zn(2+)- and NAD(+)-dependent stereoselective dehydrogenation of L-galactitol 1-phosphate to D-tagatose 6-phosphate. Here, three crystal structures of GPDH from Escherichia coli are reported: that of the open state of GPDH with Zn(2+) in the catalytic site and those of the closed state in complex with the polyols Tris and glycerol, respectively. The closed state of GPDH reveals no bound cofactor, which is at variance with the conformational transition of the prototypical mammalian liver alcohol dehydrogenase. The main intersubunit-contacting interface within the GPDH homodimer presents a large internal cavity that probably facilitates the relative movement between the subunits. The substrate analogue glycerol bound within the active site partially mimics the catalytically relevant backbone of galactitol 1-phosphate. The glycerol binding mode reveals, for the first time in the polyol dehydrogenases, a pentacoordinated zinc ion in complex with a polyol and also a strong hydrogen bond between the primary hydroxyl group and the conserved Glu144, an interaction originally proposed more than thirty years ago that supports a catalytic role for this acidic residue.
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Affiliation(s)
- Rocío Benavente
- Department of Crystallography and Structural Biology, Institute of Physical Chemistry Rocasolano, CSIC, Serrano 119, 28006 Madrid, Spain
| | - María Esteban-Torres
- Laboratory of Bacterial Biotechnology, Institute of Food Science and Technology and Nutrition (ICTAN), CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Gert-Wieland Kohring
- Microbiology, Saarland University, Campus Gebäude A1.5, 66123 Saarbruecken, Germany
| | - Álvaro Cortés-Cabrera
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of Alcalá, 28871 Alcalá de Henares, Spain
| | - Pedro A Sánchez-Murcia
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of Alcalá, 28871 Alcalá de Henares, Spain
| | - Federico Gago
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of Alcalá, 28871 Alcalá de Henares, Spain
| | - Iván Acebrón
- Department of Crystallography and Structural Biology, Institute of Physical Chemistry Rocasolano, CSIC, Serrano 119, 28006 Madrid, Spain
| | - Blanca de las Rivas
- Laboratory of Bacterial Biotechnology, Institute of Food Science and Technology and Nutrition (ICTAN), CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - Rosario Muñoz
- Laboratory of Bacterial Biotechnology, Institute of Food Science and Technology and Nutrition (ICTAN), CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
| | - José M Mancheño
- Department of Crystallography and Structural Biology, Institute of Physical Chemistry Rocasolano, CSIC, Serrano 119, 28006 Madrid, Spain
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