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Pei H, Wang Y, He W, Deng L, Lan Q, Zhang Y, Yang L, Hu K, Li J, Liu A, Ao X, Teng H, Liu S, Zou L, Li R, Yang Y. Research of Multicopper Oxidase and Its Degradation of Histamine in Lactiplantibacillus plantarum LPZN19. Microorganisms 2023; 11:2724. [PMID: 38004736 PMCID: PMC10672810 DOI: 10.3390/microorganisms11112724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/17/2023] [Accepted: 10/23/2023] [Indexed: 11/26/2023] Open
Abstract
In order to explore the structural changes and products of histamine degradation by multicopper oxidase (MCO) in Lactiplantibacillus plantarum LPZN19, a 1500 bp MCO gene in L. plantarum LPZN19 was cloned, and the recombinant MCO was expressed in E. coli BL21 (DE3). After purification by Ni2+-NTA affinity chromatography, the obtained MCO has a molecular weight of 58 kDa, and it also has the highest enzyme activity at 50 °C and pH 3.5, with a relative enzyme activity of 100%, and it maintains 57.71% of the relative enzyme activity at 5% salt concentration. The secondary structure of MCO was determined by circular dichroism, in which the proportions of the α-helix, β-sheet, β-turn and random coil were 2.9%, 39.7%, 21.2% and 36.1%, respectively. The 6xj0.1.A with a credibility of 68.21% was selected as the template to predict the tertiary structure of MCO in L. plantarum LPZN19, and the results indicated that the main components of the tertiary structure of MCO were formed by the further coiling and folding of a random coil and β-sheet. Histamine could change the spatial structure of MCO by increasing the content of the α-helix and β-sheet. Finally, the LC-MS/MS identification results suggest that the histamine was degraded into imidazole acetaldehyde, hydrogen peroxide and ammonia.
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Affiliation(s)
- Huijie Pei
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Yilun Wang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Wei He
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Lin Deng
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Qinjie Lan
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Yue Zhang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Lamei Yang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Kaidi Hu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Jianlong Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Aiping Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Xiaolin Ao
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Hui Teng
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Shuliang Liu
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Likou Zou
- College of Resource, Sichuan Agricultural University, Chengdu 611130, China;
| | - Ran Li
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
| | - Yong Yang
- College of Food Science, Sichuan Agricultural University, Ya’an 625014, China; (H.P.); (Y.W.); (W.H.); (L.D.); (Q.L.); (Y.Z.); (L.Y.); (K.H.); (J.L.); (X.A.); (H.T.); (S.L.); (R.L.)
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Huang X, Nong X, Liang K, Chen P, Zhao Y, Jiang D, Xiong J. Efficient Mn(II) removal mechanism by Serratia marcescens QZB-1 at high manganese concentration. Front Microbiol 2023; 14:1150849. [PMID: 37180235 PMCID: PMC10172493 DOI: 10.3389/fmicb.2023.1150849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023] Open
Abstract
Manganese (Mn(II)) pollution has recently increased and requires efficient remediation. In this study, Serratia marcescens QZB-1, isolated from acidic red soil, exhibited high tolerance against Mn(II) (up to 364 mM). Strain QZB-1 removed a total of 98.4% of 18 mM Mn(II), with an adsorption rate of 71.4% and oxidation rate of 28.6% after incubation for 48 h. The strain synthesized more protein (PN) to absorb Mn(II) when stimulated with Mn(II). The pH value of the cultural medium continuously increased during the Mn(II) removal process. The product crystal composition (mainly MnO2 and MnCO3), Mn-O functional group, and element-level fluctuations confirmed Mn oxidation. Overall, strain QZB-1 efficiently removed high concentration of Mn(II) mainly via adsorption and showed great potential for manganese wastewater removal.
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Affiliation(s)
- Xuejiao Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
- Guangxi Bossco Environmental Protection Technology Co., Ltd., Nanning, China
- *Correspondence: Xuejiao Huang,
| | - Xiaofang Nong
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
| | - Kang Liang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
| | - Pengling Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
| | - Yi Zhao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
| | - Daihua Jiang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, Guangxi University, Nanning, Guangxi, China
| | - Jianhua Xiong
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, China
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He Y, Zeng X, Xu F, Shao Z. Diversity of Mixotrophic Neutrophilic Thiosulfate- and Iron-Oxidizing Bacteria from Deep-Sea Hydrothermal Vents. Microorganisms 2022; 11:microorganisms11010100. [PMID: 36677390 PMCID: PMC9861301 DOI: 10.3390/microorganisms11010100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/22/2022] [Accepted: 12/22/2022] [Indexed: 01/04/2023] Open
Abstract
At deep-sea hydrothermal vents, sulfur oxidation and iron oxidation are of the highest importance to microbial metabolisms, which are thought to contribute mainly in chemolithoautotrophic groups. In this study, 17 mixotrophic neutrophilic thiosulfate- and iron-oxidizing bacteria were isolated from hydrothermal fields on the Carlsberg Ridge in the Indian Ocean, nine to the γ-proteobacteria (Halomonas (4), Pseudomonas (2), Marinobacter (2), and Rheinheimera (1)), seven to the α-proteobacteria (Thalassospira, Qipengyuania, Salipiger, Seohaeicola, Martelella, Citromicrobium, and Aurantimonas), and one to the Actinobacteria (Agromyces), as determined by their 16S rRNA and genome sequences. The physiological characterization of these isolates revealed wide versatility in electron donors (Fe(II) and Mn(II), or thiosulfate) and a variety of lifestyles as lithotrophic or heterotrophic, microaerobic, or anaerobic. As a representative strain, Pseudomonas sp. IOP_13 showed its autotrophic gowth from 105 cells/ml to 107 cells/ml;carbon dioxide fixation capacity with the δ13CVPDB in the biomass increased from -27.42‱ to 3460.06‱; the thiosulfate-oxidizing ability with produced SO42- increased from 60 mg/L to 287 mg/L; and the iron-oxidizing ability with Fe(II) decreased from 10 mM to 5.2 mM. In addition, iron-oxide crust formed outside the cells. Gene coding for energy metabolism involved in possible iron, manganese, and sulfur oxidation, and denitrification was identified by their genome analysis. This study sheds light on the function of the mixotrophic microbial community in the iron/manganese/sulfur cycles and the carbon fixation of the hydrothermal fields.
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Ishida K, Tsukamoto Y, Horitani M, Ogawa T, Tanaka Y. Biochemical properties of CumA multicopper oxidase from plant pathogen, Pseudomonas syringae. Biosci Biotechnol Biochem 2021; 85:1995-2002. [PMID: 34244699 DOI: 10.1093/bbb/zbab123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 06/15/2021] [Indexed: 11/12/2022]
Abstract
Multicopper oxidases have a wide range of substrate specificity to be involved in various physiological reactions. Pseudomonas syringae, a plant pathogenic bacterium, has a multicopper oxidase, CumA. Multicopper oxidases have ability to degrade plant cell wall component, lignin. Once P. syringae enter apoplast and colonize, they start to disrupt plant immunity. Therefore, deeper understanding of multicopper oxidases from plant pathogens, help to invent measures to prevent invasion into plant cell, which bring agricultural benefits. Several biochemical studies have reported lower activity of CumA compared with other multicopper oxidase called CotA. However, the mechanisms underlying the difference in activity have not yet been revealed. In order to acquire insight into them, we conducted a biophysical characterization of PsCumA. Our results show that PsCumA has weak type I copper EPR signal, which is essential for oxidation activity. We propose that difference in the coordination of copper ions may decrease reaction frequency.
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Affiliation(s)
- Konan Ishida
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan.,Department of Biochemistry, University of Cambridge, Cambridge, CB2 1QE, UK
| | - Yuya Tsukamoto
- Department of Earth Science, Graduate school of Science, Tohoku University, Sendai, 980-8578, Japan.,Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, 277-8564, Japan
| | - Masaki Horitani
- Department of Applied Biochemistry and Food Science, Saga University, Honjo-machi, 840-8502, Japan
| | - Tomohisa Ogawa
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan.,Atmosphere and Ocean Research Institute, The University of Tokyo, Chiba, 277-8564, Japan
| | - Yoshikazu Tanaka
- Graduate School of Life Sciences, Tohoku University, Sendai, 980-8577, Japan
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Promoting microbial utilization of phenolic substrates from bio-oil. ACTA ACUST UNITED AC 2019; 46:1531-1545. [DOI: 10.1007/s10295-019-02208-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 06/21/2019] [Indexed: 10/26/2022]
Abstract
Abstract
The economic viability of the biorefinery concept is limited by the valorization of lignin. One possible method of lignin valorization is biological upgrading with aromatic-catabolic microbes. In conjunction, lignin monomers can be produced by fast pyrolysis and fractionation. However, biological upgrading of these lignin monomers is limited by low water solubility. Here, we address the problem of low water solubility with an emulsifier blend containing approximately 70 wt% Tween® 20 and 30 wt% Span® 80. Pseudomonas putida KT2440 grew to an optical density (OD600) of 1.0 ± 0.2 when supplied with 1.6 wt% emulsified phenolic monomer-rich product produced by fast pyrolysis of red oak using an emulsifier dose of 0.076 ± 0.002 g emulsifier blend per g of phenolic monomer-rich product. This approach partially mitigated the toxicity of the model phenolic monomer p-coumarate to the microbe, but not benzoate or vanillin. This study provides a proof of concept that processing of biomass-derived phenolics to increase aqueous availability can enhance microbial utilization.
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Tan SI, Ng IS, Yu YJ. Heterologous expression of an acidophilic multicopper oxidase in Escherichia coli and its applications in biorecovery of gold. BIORESOUR BIOPROCESS 2017. [DOI: 10.1186/s40643-017-0150-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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