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Xing M, Xie F, Zeng J, Zhu Z, Wang G, Xia Y, Zhang H, Song Z, Ai L. Inhibitory activities and mechanisms of free and bound phenolics on α-glucosidase in fresh fruits of Phyllanthus emblica Linn. using spectroscopy and molecular docking. Food Funct 2024; 15:6028-6041. [PMID: 38752307 DOI: 10.1039/d4fo00249k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Phyllanthus emblica Linn. (PE) fresh fruits contain high concentrations of polyphenolics, of which free and bound phenolics are rich in biological activities. In this study, the inhibitory activity and mechanism of PEFP and PEBP on α-glucosidase (α-GLU) were investigated using spectroscopic techniques, kinetic analysis, and molecular docking. The results showed that 13 PEFP and 12 PEBP were identified by UPLC-MS/MS analysis, and Bis-HHDP-hexose and castalagin (vesgalagin) were found for the first time in PE fresh fruits. Kinetic analysis of enzyme inhibition showed that a mixture of free and bound phenolics inhibited α-GLU, and the effect of the conformational relationship of PEFP and PEBP with α-GLU on hypoglycemia was further explored by fluorescence quenching, circular dichroism (CD) spectroscopy, and molecular docking analysis. The findings demonstrated the inhibitory activity and mechanism of free and bound phenolics on α-GLU and provided a theoretical basis for PE polyphenolics as α-GLU inhibitors for hypoglycemia.
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Affiliation(s)
- Mingxia Xing
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Fan Xie
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Jingyi Zeng
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Zengjin Zhu
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Guangqiang Wang
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Yongjun Xia
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Hui Zhang
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Zibo Song
- Yunnan Provincial Key Laboratory of Applied Technology for Special Forest Fruits, Yunnan Maoduoli Group Food Co., Ltd, Yuxi 653100, China
| | - Lianzhong Ai
- Shanghai Engineering Research Center of Food Microbiology, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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Li L, Ma C, Chai H, He YC. Biological valorization of lignin-derived vanillin to vanillylamine by recombinant E. coli expressing ω-transaminase and alanine dehydrogenase in a petroleum ether-water system. BIORESOURCE TECHNOLOGY 2023:129453. [PMID: 37406835 DOI: 10.1016/j.biortech.2023.129453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 06/30/2023] [Accepted: 07/01/2023] [Indexed: 07/07/2023]
Abstract
Vanillylamine, as an important drug precursor and fine chemical intermediate, has great economic value. By constructing a strategy of double enzyme co-expression, one newly constructed recombinant E. coli HNIQLE-AlaDH expressing ω-transaminase from Aspergillus terreus and alanine dehydrogenase from Bacillus subtilis was firstly used aminate lignin-derived vanillin to vanillylamine by using a relatively low dosage of amine donors (vanillin:L-alanine:isopropylamine = 1:1:1, mol/mol/mol). In addition, in a two-phase system (water:petroleum ether = 80:20 v/v), the bioconversion of vanillin to vanillylamine was catalyzed by HNIQLE-AlaDH cell under the ambient condition, and the vanillylamine yield was 71.5%, respectively. This double-enzyme HNIQLE-AlaDH catalytic strategy was applied to catalyze the bioamination of furfural and 5-hydroxymethylfurfural with high amination efficiency. It showed that the double-enzyme catalytic strategy in this study promoted L-alanine to replace D-Alanine to participate in bioamination of vanillin and its derivatives, showing a great prospect in the green biosynthesis of biobased chemicals from biomass.
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Affiliation(s)
- Lei Li
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan 430062, Hubei Province, PR China
| | - Cuiluan Ma
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan 430062, Hubei Province, PR China
| | - Haoyu Chai
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan 430062, Hubei Province, PR China
| | - Yu-Cai He
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei University, Wuhan 430062, Hubei Province, PR China; School of Biological and Food Engineering, Changzhou University, Changzhou 213164, PR China.
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Yin SJ, Lee HY, Wang W, Lee J, Park YD. Characterization and activity-folding relationship of serine protease from Antarctic krill ( Euphausia superba). J Biomol Struct Dyn 2022:1-14. [PMID: 35612882 DOI: 10.1080/07391102.2022.2080115] [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: 10/18/2022]
Abstract
Euphausia superba (Antarctic krill) serine protease (ESP) was investigated to gain insights into the activity-structural relationship, folding behavior, and regulation of the catalytic function. We purified ESP from the krill muscle and characterized biochemical distinctions via enzyme kinetics. Studies of inhibition kinetics and unfolding in the presence of a serine residue modifier, such as phenylmethanesulfonyl fluoride, were conducted. Structural characterizations were measured by spectrofluorimetry, including 1-anilinonaphthalene-8-sulfonate dye labeling for hydrophobic residues. The computational simulations such as docking and molecular dynamics were finally conducted to detect key residues and folding behaviors in a nano-second range. The kinetic parameters of ESP were measured as KmBANH = 0.97 ± 0.15 mM and kcat/KmBANH = 4.59 s-1/mM. The time-interval kinetics measurements indicated that ESP inactivation was transformed from a monophase to a biphase process to form a thermodynamically stable state. Spectrofluorimetry measurements showed that serine is directly connected to the regional folding of ESP. Several osmolytes such as proline and glycine only partially protected the inactive form of ESP by serine modification. Computational molecular dynamics and docking simulations showed that three serine residues (Ser183, Ser188, and Ser207) and Cys184, Val206, and Gly209 are key residues of catalytic functions. Our study revealed the functional roles of serine residues as key residues of catalytic function at the active site and of the structural conformation as key folding factors, where ESP displays a flexible property of active site pocket compared to the overall structure.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shang-Jun Yin
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang, P. R. China
| | - Ho-Yeon Lee
- Genome Editing Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Korea.,Department of Bioinformatics, KRIBB school of Bioscience, University of Science and Technology (UST), Daejeon, Korea
| | - Wei Wang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang, P. R. China
| | - Jinhyuk Lee
- Genome Editing Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Korea.,Department of Bioinformatics, KRIBB school of Bioscience, University of Science and Technology (UST), Daejeon, Korea
| | - Yong-Doo Park
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, Zhejiang, P. R. China.,Skin Diseases Research Center, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, P.R. China.,Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, P.R. China
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Liao Y, Hu X, Pan J, Zhang G. Inhibitory Mechanism of Baicalein on Acetylcholinesterase: Inhibitory Interaction, Conformational Change, and Computational Simulation. Foods 2022; 11:foods11020168. [PMID: 35053900 PMCID: PMC8774682 DOI: 10.3390/foods11020168] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 02/04/2023] Open
Abstract
Alzheimer’s disease (AD) is the most prevalent chronic neurodegenerative disease in elderly individuals, causing dementia. Acetylcholinesterase (AChE) is regarded as one of the most popular drug targets for AD. Herbal secondary metabolites are frequently cited as a major source of AChE inhibitors. In the current study, baicalein, a typical bioactive flavonoid, was found to inhibit AChE competitively, with an associated IC50 value of 6.42 ± 0.07 µM, through a monophasic kinetic process. The AChE fluorescence quenching by baicalein was a static process. The binding constant between baicalein and AChE was an order of magnitude of 104 L mol−1, and hydrogen bonding and hydrophobic interaction were the major forces for forming the baicalein−AChE complex. Circular dichroism analysis revealed that baicalein caused the AChE structure to shrink and increased its surface hydrophobicity by increasing the α-helix and β-turn contents and decreasing the β-sheet and random coil structure content. Molecular docking revealed that baicalein predominated at the active site of AChE, likely tightening the gorge entrance and preventing the substrate from entering and binding with the enzyme, resulting in AChE inhibition. The preceding findings were confirmed by molecular dynamics simulation. The current study provides an insight into the molecular-level mechanism of baicalein interaction with AChE, which may offer new ideas for the research and development of anti-AD functional foods and drugs.
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Affiliation(s)
- Yijing Liao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; (Y.L.); (X.H.); (J.P.)
- School of Pharmacy, Nanchang University, Nanchang 330006, China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; (Y.L.); (X.H.); (J.P.)
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; (Y.L.); (X.H.); (J.P.)
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; (Y.L.); (X.H.); (J.P.)
- Correspondence:
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Qian GY, Lim G, Yin SJ, Yang JM, Lee J, Park YD. Biochemical Study of Fibrinolytic Protease from Euphausia superba Possessing Multifunctional Serine Protease Activity. Protein Pept Lett 2021; 28:651-664. [PMID: 33183186 DOI: 10.2174/0929866527666201112123714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/27/2020] [Accepted: 10/02/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Fibrinolytic protease from Euphausia superba (EFP) was isolated. OBJECTIVE Biochemical distinctions, regulation of the catalytic function, and the key residues of EFP were investigated. METHODS The serial inhibition kinetic evaluations coupled with measurements of fluorescence spectra in the presence of 4-(2-aminoethyl) benzene sulfonyl fluoride hydrochloride (AEBSF) was conducted. The computational molecular dynamics (MD) simulations were also applied for a comparative study. RESULTS The enzyme behaved as a monomeric protein with a molecular mass of about 28.6 kD with Km BApNA = 0.629 ± 0.02 mM and kcat/Km BApNA = 7.08 s-1/mM. The real-time interval measurements revealed that the inactivation was a first-order reaction, with the kinetic processes shifting from a monophase to a biphase. Measurements of fluorescence spectra showed that serine residue modification by AEBSF directly caused conspicuous changes of the tertiary structures and exposed hydrophobic surfaces. Some osmolytes were applied to find protective roles. These results confirmed that the active region of EFP is more flexible than the overall enzyme molecule and serine, as the key residue, is associated with the regional unfolding of EFP in addition to its catalytic role. The MD simulations were supportive to the kinetics data. CONCLUSION Our study indicated that EFP has an essential serine residue for its catalyst function and associated folding behaviors. Also, the functional role of osmolytes such as proline and glycine that may play a role in defense mechanisms from environmental adaptation in a krill's body was suggested.
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Affiliation(s)
- Guo-Ying Qian
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Gyutae Lim
- Genome Editing Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Gwahak-ro, Yuseonggu, Daejeon, 34141, Korea
| | - Shang-Jun Yin
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
| | - Jun-Mo Yang
- Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 135-710, Korea
| | - Jinhyuk Lee
- Genome Editing Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Gwahak-ro, Yuseonggu, Daejeon, 34141, Korea
| | - Yong-Doo Park
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, China
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Xie Z, He M, Zhai Y, Xin F, Yu S, Yu S, Xiao H, Song Y. Inhibitory kinetics and mechanism of oleanolic acid on α-glucosidase. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2021. [DOI: 10.1007/s11694-021-00920-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Zeng L, Ding H, Hu X, Zhang G, Gong D. Galangin inhibits α-glucosidase activity and formation of non-enzymatic glycation products. Food Chem 2018; 271:70-79. [PMID: 30236734 DOI: 10.1016/j.foodchem.2018.07.148] [Citation(s) in RCA: 137] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 07/16/2018] [Accepted: 07/23/2018] [Indexed: 11/18/2022]
Abstract
Inhibition of α-glucosidase and non-enzymatic glycation is considered as an effective approach to treat type 2 diabetes. Herein, multispectroscopic techniques and molecular docking analysis were used to investigate the inhibition of galangin on α-glucosidase and non-enzymatic glycation. Galangin showed a reversible inhibition on α-glucosidase activity in a mixed-type manner through a monophasic kinetic process, and induced the fluorescence quenching and conformational changes of α-glucosidase by forming α-glucosidase-galgangin complex. Molecular docking revealed that galangin primarily interacted with the amino acid residues within the active site of α-glucosidase, which may prevent the entrance of substrate resulting in a decrease in catalytic efficiency of α-glucosidase. Moreover, galangin moderately inhibited the formation of intermediates of non-enzymatic glycation, fructosamine and α-dicarbonyl compounds and strongly inhibited the formation of advanced glycation end products.
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Affiliation(s)
- Li Zeng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Huafang Ding
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China.
| | - Deming Gong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; New Zealand Institute of Natural Medicine Research, 8 Ha Crescent, Auckland 2104, New Zealand
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Ding H, Wu X, Pan J, Hu X, Gong D, Zhang G. New Insights into the Inhibition Mechanism of Betulinic Acid on α-Glucosidase. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:7065-7075. [PMID: 29902001 DOI: 10.1021/acs.jafc.8b02992] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Betulinic acid (BA), an important pentacyclic triterpene widely distributed in many foods, possesses high antidiabetic activity. In this study, BA was found to exhibit stronger inhibition of α-glucosidase than acarbose with an IC50 value of (1.06 ± 0.02) × 10-5 mol L-1 in a mixed-type manner. BA bound with α-glucosidase to form a BA-α-glucosidase complex, resulting in a more compact structure of the enzyme. The obtained concentrations and spectra profiles of the components resolved by the multivariate-curve resolution-alternating least-squares confirmed the formation of the BA-α-glucosidase complex. Molecular docking showed that BA tightly bound to the active cavity of α-glucosidase, which might hinder the entrance of the substrate leading to a decline in enzyme activity. The chemical modification of α-glucosidase verified the results of the computer simulation that the order of importance of the four amino acid residues in the binding process was His > Tyr > Lys > Arg.
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Affiliation(s)
- Huafang Ding
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Xiaqing Wu
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Junhui Pan
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Xing Hu
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
| | - Deming Gong
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
- New Zealand Institute of Natural Medicine Research , 8 Ha Crescent , Auckland 2104 , New Zealand
| | - Guowen Zhang
- State Key Laboratory of Food Science and Technology , Nanchang University , Nanchang 330047 , China
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Zeng L, Zhang G, Lin S, Gong D. Inhibitory Mechanism of Apigenin on α-Glucosidase and Synergy Analysis of Flavonoids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:6939-6949. [PMID: 27581205 DOI: 10.1021/acs.jafc.6b02314] [Citation(s) in RCA: 206] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inhibition of α-glucosidase activity may suppress postprandial hyperglycemia. The inhibition kinetic analysis showed that apigenin reversibly inhibited α-glucosidase activity with an IC50 value of (10.5 ± 0.05) × 10(-6) mol L(-1), and the inhibition was in a noncompetitive manner through a monophasic kinetic process. The fluorescence quenching and conformational changes determined by fluorescence and circular dichroism were due to the formation of an α-glucosidase-apigenin complex, and the binding was mainly driven by hydrophobic interactions and hydrogen bonding. The molecular simulation showed that apigenin bound to a site close to the active site of α-glucosidase, which may induce the channel closure to prevent the access of substrate, eventually leading to the inhibition of α-glucosidase. Isobolographic analysis of the interaction between myricetin and apigenin or morin showed that both of them exhibited synergistic effects at low concentrations and tended to exhibit additive or antagonistic interaction at high concentrations.
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Affiliation(s)
- Li Zeng
- State Key Laboratory of Food Science, Technology, Nanchang University , Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science, Technology, Nanchang University , Nanchang 330047, China
| | - Suyun Lin
- State Key Laboratory of Food Science, Technology, Nanchang University , Nanchang 330047, China
| | - Deming Gong
- School of Biological Sciences, The University of Auckland , Auckland 1142, New Zealand
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Purification and characterization of polysaccharides degradases produced by Alteromonas sp. A321. Int J Biol Macromol 2016; 86:96-104. [PMID: 26774375 DOI: 10.1016/j.ijbiomac.2016.01.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 01/05/2016] [Accepted: 01/09/2016] [Indexed: 11/21/2022]
Abstract
Two different degradases from Alteromonas sp. A321 for polysaccharides from Enteromorpha prolifera (DPE-L and DPE-P) were purified to homogeneity. The molecular weights of purified DPE-L and DPE-P were 75.2 and 102.5 kDa, respectively, and their internal sequences were analysed by LC-MS-MS. The enzymes exhibited an optimum temperature of 30-40 °C (DPE-L) and 35-45 °C (DPE-P), an optimum pH of 7.0 (DPE-L) and 6.0 (DPE-P). DPE-P was highly stable in the presence of EDTA and 1,10-phenanthroline while DPE-L was inhibited by 1,10-phenanthroline. The Km values of DPE-L and DPE-P were 2.93 mg/ml and 0.31 mg/ml and the Vmax values were 6.11 μmol/min/ml and 2.88 μmol/min/ml, respectively. Results of HPLC and ESI-MS analyses showed that enzymatic products were: Rha1(SO3H)1, Rha1(SO3H)1Gluc1, Rha2(SO3H)2Gluc1, and Rha3(SO3H)3Gluc1Xyl1 by DPE-L, and Glu2, Glu3, plus Glu4 by DPE-P, respectively. Thus DPE-L and DPE-P can be used to produce oligosaccharides which potentially revealed more of structure of polysaccharides from E. prolifera.
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Si YX, Lee J, Zhao F, Yin SJ, Park YD, Qian GY, Jiang XM. Effects of cadmium on the cuttlefish Sepia pharaonis’ arginine kinase: unfolding kinetics integrated with computational simulations. J Biomol Struct Dyn 2015; 34:1763-77. [DOI: 10.1080/07391102.2015.1091747] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Yue-Xiu Si
- School of Marine Sciences, Ningbo University, Ningbo 315211, P.R. China
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R. China
| | - Jinhyuk Lee
- Korean Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea
- Department of Nanobiotechnology and Bioinformatics, University of Sciences and Technology, Daejeon 305-350, Korea
| | - Feng Zhao
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R. China
| | - Shang-Jun Yin
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R. China
| | - Yong-Doo Park
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R. China
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing 314006, P.R. China
| | - Guo-Ying Qian
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R. China
| | - Xia-Min Jiang
- School of Marine Sciences, Ningbo University, Ningbo 315211, P.R. China
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Si YX, Lee J, Cai Y, Yin SJ, Yang JM, Park YD, Qian GY. Molecular dynamics simulations integrating kinetics for Pb2+-induced arginine kinase inactivation and aggregation. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.02.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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The effect of Zn2+ on Exopalaemon carinicauda arginine kinase: Computational simulations including unfolding kinetics. Process Biochem 2015. [DOI: 10.1016/j.procbio.2014.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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14
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The effect of Cu2+ on arginine kinase from Euphausia superba: A computational simulation integrating unfolding and aggregation studies. Process Biochem 2015. [DOI: 10.1016/j.procbio.2014.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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A folding study of Antarctic krill (Euphausia superba) alkaline phosphatase using denaturants. Int J Biol Macromol 2014; 70:266-74. [DOI: 10.1016/j.ijbiomac.2014.07.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/08/2014] [Accepted: 07/02/2014] [Indexed: 01/25/2023]
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