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Liu P, Chen Y, Ma C, Ouyang J, Zheng Z. β-Galactosidase: a traditional enzyme given multiple roles through protein engineering. Crit Rev Food Sci Nutr 2023:1-20. [PMID: 38108277 DOI: 10.1080/10408398.2023.2292282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
β-Galactosidases are crucial carbohydrate-active enzymes that naturally catalyze the hydrolysis of galactoside bonds in oligo- and disaccharides. These enzymes are commonly used to degrade lactose and produce low-lactose and lactose-free dairy products that are beneficial for lactose-intolerant people. β-galactosidases exhibit transgalactosylation activity, and they have been employed in the synthesis of galactose-containing compounds such as galactooligosaccharides. However, most β-galactosidases have intrinsic limitations, such as low transglycosylation efficiency, significant product inhibition effects, weak thermal stability, and a narrow substrate spectrum, which greatly hinder their applications. Enzyme engineering offers a solution for optimizing their catalytic performance. The study of the enzyme's structure paves the way toward explaining catalytic mechanisms and increasing the efficiency of enzyme engineering. In this review, the structure features of β-galactosidases from different glycosyl hydrolase families and the catalytic mechanisms are summarized in detail to offer guidance for protein engineering. The properties and applications of β-galactosidases are discussed. Additionally, the latest progress in β-galactosidase engineering and the strategies employed are highlighted. Based on the combined analysis of structure information and catalytic mechanisms, the ultimate goal of this review is to furnish a thorough direction for β-galactosidases engineering and promote their application in the food and dairy industries.
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Affiliation(s)
- Peng Liu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, People's Republic of China
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Yuehua Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Cuiqing Ma
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, People's Republic of China
| | - Jia Ouyang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
| | - Zhaojuan Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, People's Republic of China
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Duan F, Sun T, Zhang J, Wang K, Wen Y, Lu L. Recent innovations in immobilization of β-galactosidases for industrial and therapeutic applications. Biotechnol Adv 2022; 61:108053. [DOI: 10.1016/j.biotechadv.2022.108053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 10/18/2022] [Accepted: 10/20/2022] [Indexed: 11/17/2022]
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β-Galactosidases: A great tool for synthesizing galactose-containing carbohydrates. Biotechnol Adv 2020; 39:107465. [DOI: 10.1016/j.biotechadv.2019.107465] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 10/26/2019] [Accepted: 10/31/2019] [Indexed: 12/17/2022]
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Wang K, Qi T, Guo L, Ma Z, Gu G, Xiao M, Lu L. Enzymatic Glucosylation of Salidroside from Starch by α-Amylase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:2012-2019. [PMID: 30678460 DOI: 10.1021/acs.jafc.8b06618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
α-Amylases are among the most important and widely used industrial enzymes for starch processing. In this work, an α-amylase from Bacillus subtilis XL8 was purified and found to possess both hydrolysis and transglycosylation activities. The optimal pH and temperature for starch hydrolysis were pH 5.0 and 70 °C, respectively. The enzyme could degrade soluble starch into beneficial malto-oligosaccharides ranging from dimer to hexamer. More importantly, it was able to catalyze α-glycosyl transfer from the soluble starch to salidroside, a medicinal plant-derived component with broad pharmacological properties. The transglycosylation reaction catalyzed by the enzyme generated six derivatives in a total high yield of 73.4% when incubating with 100 mg/mL soluble starch and 50 mM salidroside (pH 7.5) at 50 °C for 2 h. These derivatives were identified as α-1,4-glucosyl, maltosyl, maltotriosyl, maltotetraosyl, maltopentaosyl, and maltohexaosyl salidrosides, respectively. They were novel promising compounds that might integrate the bioactive functions of malto-oligosaccharides and salidroside.
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Affiliation(s)
- Ke Wang
- School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan 430030 , PR China
| | - Tingting Qi
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, State Key Laboratory of Microbial Technology , Shandong University , Qingdao 266237 , PR China
| | - Longcheng Guo
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, State Key Laboratory of Microbial Technology , Shandong University , Qingdao 266237 , PR China
| | - Zhongxuan Ma
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, State Key Laboratory of Microbial Technology , Shandong University , Qingdao 266237 , PR China
| | - Guofeng Gu
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, State Key Laboratory of Microbial Technology , Shandong University , Qingdao 266237 , PR China
| | - Min Xiao
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, State Key Laboratory of Microbial Technology , Shandong University , Qingdao 266237 , PR China
| | - Lili Lu
- School of Pharmacy, Tongji Medical College , Huazhong University of Science and Technology , Wuhan 430030 , PR China
- National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, State Key Laboratory of Microbial Technology , Shandong University , Qingdao 266237 , PR China
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Sabater C, Olano A, Prodanov M, Montilla A, Corzo N. An efficient process for obtaining prebiotic oligosaccharides derived from lactulose using isomerized and purified whey permeate. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:5074-5082. [PMID: 28417455 DOI: 10.1002/jsfa.8384] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 04/06/2017] [Accepted: 04/11/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND One of the most promising uses of whey permeate (WP) is the synthesis of prebiotic oligosaccharides. Herein, commercial WP was submitted to chemical isomerization catalysed by sodium borate at an alkaline pH and subsequent purification using anion-exchange resins to remove boron. Subsequently, purified mixtures were used to synthesize prebiotic oligosaccharides using β-galactosidase from Bacillus circulans. RESULTS Isomerization of concentrated WP (200 g L-1 lactose) gave rise to levels of lactulose up to 155.5 g L-1 after 30 min of reaction (molar ratio of boron/lactose, 1/1; pH 12; 70 °C). Boron was removed from the isomerized WP (IWP) using the combination of a strong acid (IR-120, H+ ) and a weak base (IRA-743) anion-exchange resins, reducing its level to <1 ppm, without loss of lactulose. During the transglycosylation reaction of purified IWP (lactose/lactulose ratio, 1/2.4) maximum content of prebiotic compounds was achieved, i.e. 690 g kg-1 WP after 3 h of reaction. CONCLUSION This study shows that combined chemical-enzymatic reactions together with the purification of IWP results in an efficient synthesis of prebiotic oligosaccharides. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Carlos Sabater
- Departamento de Bioactividad y Análisis de Alimentos, Instituto de Investigación en Ciencias de la Alimentación CIAL, Madrid, Spain
| | - Agustín Olano
- Departamento de Bioactividad y Análisis de Alimentos, Instituto de Investigación en Ciencias de la Alimentación CIAL, Madrid, Spain
| | - Marin Prodanov
- Departamento de Producción y Caracterización de Nuevos Alimentos, Instituto de Investigación en Ciencias de la Alimentación CIAL, Madrid, Spain
| | - Antonia Montilla
- Departamento de Bioactividad y Análisis de Alimentos, Instituto de Investigación en Ciencias de la Alimentación CIAL, Madrid, Spain
| | - Nieves Corzo
- Departamento de Bioactividad y Análisis de Alimentos, Instituto de Investigación en Ciencias de la Alimentación CIAL, Madrid, Spain
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Qi T, Gu G, Xu L, Xiao M, Lu L. Efficient synthesis of tyrosol galactosides by the β-galactosidase from Enterobacter cloacae B5. Appl Microbiol Biotechnol 2017; 101:4995-5003. [DOI: 10.1007/s00253-017-8249-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/01/2017] [Accepted: 03/12/2017] [Indexed: 12/21/2022]
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Lu L, Liu Q, Jin L, Yin Z, Xu L, Xiao M. Enzymatic Synthesis of Rhamnose Containing Chemicals by Reverse Hydrolysis. PLoS One 2015; 10:e0140531. [PMID: 26505759 PMCID: PMC4624630 DOI: 10.1371/journal.pone.0140531] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 09/28/2015] [Indexed: 11/19/2022] Open
Abstract
Rhamnose containing chemicals (RCCs) are widely occurred in plants and bacteria and are known to possess important bioactivities. However, few of them were available using the enzymatic synthesis method because of the scarcity of the α-L-rhamnosidases with wide acceptor specificity. In this work, an α-L-rhamnosidase from Alternaria sp. L1 was expressed in Pichia pastroris strain GS115. The recombinant enzyme was purified and used to synthesize novel RCCs through reverse hydrolysis in the presence of rhamnose as donor and mannitol, fructose or esculin as acceptors. The effects of initial substrate concentrations, reaction time, and temperature on RCC yields were investigated in detail when using mannitol as the acceptor. The mannitol derivative achieved a maximal yield of 36.1% by incubation of the enzyme with 0.4 M L-rhamnose and 0.2 M mannitol in pH 6.5 buffers at 55°C for 48 h. In identical conditions except for the initial acceptor concentrations, the maximal yields of fructose and esculin derivatives reached 11.9% and 17.9% respectively. The structures of the three derivatives were identified to be α-L-rhamnopyranosyl-(1→6')-D-mannitol, α-L-rhamnopyranosyl-(1→1')-β-D-fructopyranose, and 6,7-dihydroxycoumarin α-L-rhamnopyranosyl-(1→6')-β-D-glucopyranoside by ESI-MS and NMR spectroscopy. The high glycosylation efficiency as well as the broad acceptor specificity of this enzyme makes it a powerful tool for the synthesis of novel rhamnosyl glycosides.
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Affiliation(s)
- Lili Lu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Jinan 250100, PR China
| | - Qian Liu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Jinan 250100, PR China
- Academy of State Administration of Grain, Beijing 100037, PR China
| | - Lan Jin
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Jinan 250100, PR China
| | - Zhenhao Yin
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Jinan 250100, PR China
| | - Li Xu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Jinan 250100, PR China
| | - Min Xiao
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Jinan 250100, PR China
- * E-mail:
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Escherichia coli β-galactosidase-catalyzed synthesis of 2-phenoxyethanol galactoside and its characterization. Bioprocess Biosyst Eng 2014; 38:365-72. [DOI: 10.1007/s00449-014-1276-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 08/29/2014] [Indexed: 11/26/2022]
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Lee SE, Jo TM, Lee HY, Lee J, Jung KH. β-galactosidase-catalyzed synthesis of galactosyl chlorphenesin and its characterization. Appl Biochem Biotechnol 2013; 171:1299-312. [PMID: 23564435 DOI: 10.1007/s12010-013-0213-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 03/21/2013] [Indexed: 10/27/2022]
Abstract
We synthesized galactosyl chlorphenesin (CPN-G) using β-gal-containing Escherichia coli (E. coli) cells in which the conversion yield of chlorphenesin (CPN) to CPN-G reached about 64 % during 12 h. CPN-G was identified and characterized using high-performance liquid chromatography, liquid chromatography-mass spectrometry, Fourier transform-infrared spectrometry, and nuclear magnetic resonance analysis ((1)H and (13)C). We verified that a galactose was covalently bound to a CPN alcohol group during CPN-G synthesis throughout these analyses. In particular, by the hydrolysis of CPN-G using β-gal, it was confirmed that a galactose was bound to CPN. The minimal inhibitory concentration (MIC) results showed that the CPN-G MICs were fairly similar to those of CPN. HACAT cell viability was significantly higher in CPN-G-treated cells than in CPN-treated cells at concentrations of 0.0-20.0 mM. Finally, we accomplished the synthesis of less toxic CPN-G, compared with CPN, using β-gal-containing E. coli cells as whole cells without changes in the MICs against microorganisms.
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Affiliation(s)
- Sang-Eun Lee
- Department of Biotechnology, Korea National University of Transportation, Jeungpyung, Chungbuk, 368-701, Republic of Korea
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Liu Q, Lu L, Xiao M. Cell surface engineering of α-l-rhamnosidase for naringin hydrolysis. BIORESOURCE TECHNOLOGY 2012; 123:144-9. [PMID: 22940311 DOI: 10.1016/j.biortech.2012.05.083] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 04/16/2012] [Accepted: 05/18/2012] [Indexed: 05/25/2023]
Abstract
An α-l-rhamnosidase gene (rhaL1) containing an open reading frame of 2046-bp encoding a 681-amino acid protein (RhaL1) was cloned from Alternaria sp. L1 for naringin hydrolysis on the cell surface of Saccharomyces cerevisiae EBY-100. RhaL1 anchored to the yeast cell surface showed maximum enzyme activity at pH 6.0-6.5 and 70°C and was stable at pH 2.5-12.0 below 60°C. When the yeast cells were employed to hydrolyze naringin in grapefruit juice, about 85% naringin was hydrolyzed at 60°C in 10min. The yeast cells were harvested and recycled for the next batch. The hydrolysis rate of the naringin was maintained at over 80% for 10 batches. These results demonstrate the stability of the RhaL1-expressing yeast cells and effective in hydrolysis of naringin in juice. Thus, the system could have promise for industrial bitterness reduction.
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Affiliation(s)
- Qian Liu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan 250100, PR China
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Lu L, Xu S, Jin L, Zhang D, Li Y, Xiao M. Synthesis of galactosyl sucralose by β-galactosidase from Lactobacillus bulgaricus L3. Food Chem 2012. [DOI: 10.1016/j.foodchem.2012.02.134] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Lu L, Xu S, Zhao R, Zhang D, Li Z, Li Y, Xiao M. Synthesis of galactooligosaccharides by CBD fusion β-galactosidase immobilized on cellulose. BIORESOURCE TECHNOLOGY 2012; 116:327-333. [PMID: 22525263 DOI: 10.1016/j.biortech.2012.03.108] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Revised: 03/28/2012] [Accepted: 03/28/2012] [Indexed: 05/31/2023]
Abstract
The β-galactosidase gene (bgaL3) was cloned from Lactobacillus bulgaricus L3 and fused with cellulose binding domain (CBD) using pET-35b (+) vector in Escherichia coli. The resulting fusion protein (CBD-BgaL3) was directly adsorbed onto microcrystalline cellulose with a high immobilization efficiency of 61%. A gram of cellulose was found to absorb 97.6 U of enzyme in the solution containing 100mM NaCl (pH 5.8) at room temperature for 20 min. The enzymatic and transglycosylation characteristics of the immobilized CBD-BgaL3 were similar to the free form. Using the immobilized enzyme as the catalyst, the yield of galactooligosaccharides (GOS) reached a maximum of 49% (w/w) from 400 g/L lactose (pH 7.6) at 45 °C for 75 min, with a high productivity of 156.8 g/L/h. Reusability assay was subsequently performed under the same reaction conditions. The immobilized enzyme could retain over 85% activity after twenty batches with the GOS yields all above 40%.
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Affiliation(s)
- Lili Lu
- State Key Lab of Microbial Technology and National Glycoengineering Research Center, Shandong University, Jinan 250100, PR China
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Oliveira C, Guimarães PM, Domingues L. Recombinant microbial systems for improved β-galactosidase production and biotechnological applications. Biotechnol Adv 2011; 29:600-9. [DOI: 10.1016/j.biotechadv.2011.03.008] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 01/24/2011] [Accepted: 03/31/2011] [Indexed: 11/28/2022]
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