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Feng L, Deng Y, Song S, Sun Y, Cui J, Ma X, Jin L, Wang Y, James TD, Wang C. Visual Identification of Trichosporon asahii, a Gut Yeast Associated with Obesity, Using an Enzymatic NIR Fluorescent Probe. Anal Chem 2022; 94:11216-11223. [PMID: 35920602 PMCID: PMC9386680 DOI: 10.1021/acs.analchem.2c01691] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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Lipase found in the gut microbiota participates in the
digestion
and absorption of dietary fats. As such, the gut microbiota is involved
in the regulation of the host metabolism, affecting the levels of
lipids and free fatty acids, ultimately resulting in obesity. In this
study, an enzymatic activatable near-infrared fluorescent probe, DDAO-C6, was developed for visually sensing endogenous lipase
from gut microbes. Using DDAO-C6, a cultivated intestinal
yeast strain was rapidly identified from human feces that exhibited
high lipase expression and was identified as Trichosporon
asahii Y2. We then determined that the colonization
of the gut of mice with T. asahii Y2
increased lipase activity in the digestive tract and promoted obesity
and hyperlipidemia when the mice were fed high fat diets. Above all,
the present research resulted in a fluorescence visualization tool
for the functional investigation of gut microbiota associated with
obesity and disorders of lipid metabolism.
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Affiliation(s)
- Lei Feng
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China.,Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Ying Deng
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
| | - Shufan Song
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
| | - Yanqiu Sun
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
| | - Jingnan Cui
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
| | - Xiaochi Ma
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China.,Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
| | - Lingling Jin
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
| | - Yan Wang
- Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
| | - Tony D James
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China.,Department of Chemistry, University of Bath, Bath BA2 7AY, U.K
| | - Chao Wang
- Second Affiliated Hospital, Dalian Medical University, Dalian 116023, China.,Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China
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2
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Temperature-resistant and solvent-tolerant lipases as industrial biocatalysts: Biotechnological approaches and applications. Int J Biol Macromol 2021; 187:127-142. [PMID: 34298046 DOI: 10.1016/j.ijbiomac.2021.07.101] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 12/21/2022]
Abstract
The development of new biocatalytic systems to replace the chemical catalysts, with suitable characteristics in terms of efficiency, stability under high temperature reactions and in the presence of organic solvents, reusability, and eco-friendliness is considered a very important step to move towards the green processes. From this basis, the use of lipase as a catalyst is highly desired for many industrial applications because it offers the reactions in which could be used, stability in harsh conditions, reusability and a greener process. Therefore, the introduction of temperature-resistant and solvent-tolerant lipases have become essential and ideal for industrial applications. Temperature-resistant and solvent-tolerant lipases have been involved in many large-scale applications including biodiesel, detergent, food, pharmaceutical, organic synthesis, biosensing, pulp and paper, textile, animal feed, cosmetics, and leather industry. So, the present review provides a comprehensive overview of the industrial use of lipase. Moreover, special interest in biotechnological and biochemical techniques for enhancing temperature-resistance and solvent-tolerance of lipases to be suitable for the industrial uses.
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Singh Y, Gupta N, Verma VV, Goel M, Gupta R. Selective disruption of disulphide bonds lowered activation energy and improved catalytic efficiency in TALipB from Trichosporon asahii MSR54: MD simulations revealed flexible lid and extended substrate binding area in the mutant. Biochem Biophys Res Commun 2016; 472:223-30. [PMID: 26930469 DOI: 10.1016/j.bbrc.2016.01.189] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 01/30/2016] [Indexed: 12/01/2022]
Abstract
TALipB (33 kDa) is a solvent stable, enantioselective lipase from Trichosporon asahii MSR54. It is cysteine-rich and shows activation in presence of thiol reducing agents. DIANNA server predicted three disulphide bridges C53-C195 (S1), C89-C228 (S2) and C164-C254 (S3) in the enzyme. Selective disruption of disulphide bonds by cysteine to alanine mutations at Cys53 and Cys89 of S1 and S2 bonds resulted in enzyme activation. Mutant mTALipB (S1+S2) showed increase in specific activity by ∼4-fold (834 mM/mg) and improved Vmax of 6.27 μmol/ml/min at 40 °Con pNP caprate. Temperature optima of mTALipB shifted from 50 to 40 °C and activation energy decreased by 0.7 kcal mol(-1). However, the mutant was less thermostable with a t1/2 of 18 min at 60 °C as compared to t1/2 of 38 min for the native enzyme. Mutant also displayed an improved activity on all pNP esters and higher enantiomeric excess (61%) during esterification of (±) 1-phenylethanol. Far-UV CD analysis showed significant changes in secondary structure after S-S bridge disruption with 7.16% decrease in α-helices and 1.31% increase in β-sheets. In silico analysis predicted two lids (α5 and α9) in TALipB. Molecular dynamic simulations at 40 °C and 50 °C revealed that in the mTALipB, both the lids opened at 40 °C with clockwise and anticlockwise rotations in Lid1 and Lid2, respectively. In the native protein, however, the lid was only partially open even at 50 °C. Concomitant to lid flexibility, there was an extension of accessible catalytic triad surface area resulting in improved catalytic efficiency of the mutant enzyme.
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Affiliation(s)
- Yogesh Singh
- Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India
| | - Namita Gupta
- Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India
| | - Ved Vrat Verma
- Department of Biophysics, University of Delhi South Campus, New Delhi 110021, India
| | - Manisha Goel
- Department of Biophysics, University of Delhi South Campus, New Delhi 110021, India
| | - Rani Gupta
- Department of Microbiology, University of Delhi South Campus, New Delhi 110021, India.
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Deng D, Zhang Y, Sun A, Liang J, Hu Y. Functional Characterization of a Novel Marine Microbial GDSL Lipase and Its Utilization in the Resolution of (±)-1-Phenylethanol. Appl Biochem Biotechnol 2016; 179:75-93. [DOI: 10.1007/s12010-016-1980-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 01/04/2016] [Indexed: 12/26/2022]
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