Journal of Microbiology

Review

[Minireview]Cytoplasmic molecular chaperones in Pseudomonas species: Hyunhee Kim , Seongjoon Moon , Soojeong Ham , Kihyun Lee , Ute Römling , Changhan Lee; J. Microbiol. 2022;60(11):1049-1060. Published online November 1, 2022; DOI: https://doi.org/10.1007/s12275-022-2425-0

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Pseudomonas is widespread in various environmental and host niches. To promote rejuvenation, cellular protein homeostasis must be finely tuned in response to diverse stresses, such as extremely high and low temperatures, oxidative stress, and desiccation, which can result in protein homeostasis imbalance. Molecular chaperones function as key components that aid protein folding and prevent protein denaturation. Pseudomonas, an ecologically important bacterial genus, includes human and plant pathogens as well as growth-promoting symbionts and species useful for bioremediation. In this review, we focus on protein quality control systems, particularly molecular chaperones, in ecologically diverse species of Pseudomonas, including the opportunistic human pathogen Pseudomonas aeruginosa, the plant pathogen Pseudomonas syringae, the soil species Pseudomonas putida, and the psychrophilic Pseudomonas antarctica.

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An innovative utilization approach for by-products of biogas desulfurization：Co-hydrothermal treatment of sulfur with biogas slurry to prepare sulfur-enriched liquid fertilizer
Zhijie Xie, Fang Deng, Yuqin Wan, Yiping Luo, Qin Cao, Yichao Chen, Dong Li
Process Biochemistry.2024; 147: 522. CrossRef
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Development of heat-shock resistance in Legionella pneumophila modeled by experimental evolution
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Applied and Environmental Microbiology.2023;[Epub] CrossRef

Research Support, Non-U.S. Gov't

Enhanced Production of Carboxymethylcellulase by a Marine Bacterium, Bacillus velezensis A-68, by Using Rice Hulls in Pilot-scale Bioreactor under Optimized Conditions for Dissolved Oxygen: Wa Gao , Hye-Jin Kim , Chung-Han Chung , Jin-Woo Lee; J. Microbiol. 2014;52(9):755-761. Published online July 30, 2014; DOI: https://doi.org/10.1007/s12275-014-4156-3

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Abstract

The optimal conditions for the production of carboxymethylcellulase (CMCase) by Bacillus velezensis A-68 at a flask scale have been previously reported. In this study, the parameters involved in dissolved oxygen in 7 and 100 L bioreactors were optimized for the pilot-scale production of CMCase. The optimal agitation speed and aeration rate for cell growth of B. velezensis A-68 were 323 rpm and 1.46 vvm in a 7 L bioreactor, whereas those for the production of CMCase were 380 rpm and 0.54 vvm, respectively. The analysis of variance (ANOVA) implied that the highly significant factor for cell growth was the aeration rate, whereas that for the production of CMCase was the agitation speed. The optimal inner pressures for cell growth and the production of CMCase by B. velezensis A-68 in a 100 L bioreactor were 0.00 and 0.04 MPa, respectively. The maximal production of CMCase in a 100 L bioreactor under optimized conditions using rice hulls was 108.1 U/ml, which was 1.8 times higher than that at a flask scale under previously optimized conditions.

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Production and stability of a multi-strain Bacillus based probiotic product for commercial use in poultry
Uraisha Ramlucken, Santosh O. Ramchuran, Ghaneshree Moonsamy, Christine Jansen van Rensburg, Mapitsi S. Thantsha, Rajesh Lalloo
Biotechnology Reports.2021; 29: e00575. CrossRef
Killing effect of deinoxanthins on cyanobloom-forming Microcystis aeruginosa: Eco-friendly production and specific activity of deinoxanthins
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Environmental Research.2021; 200: 111455. CrossRef
Biochemical and Molecular Characterization of Five Bacillus Isolates Displaying Remarkable Carboxymethyl Cellulase Activities
Esraa Abd Elhameed, Alaa R. M. Sayed, Tharwat E. E. Radwan, Gamal Hassan
Current Microbiology.2020; 77(10): 3076. CrossRef
Enhanced Production of Carboxymethylcellulase by Recombinant Escherichia coli Strain from Rice Bran with Shifts in Optimal Conditions of Aeration Rate and Agitation Speed on a Pilot-Scale
Chung-Il Park, Jae-Hong Lee, Jianhong Li, Jin-Woo Lee
Applied Sciences.2019; 9(19): 4083. CrossRef
Characteristics and Application of a Novel Species of Bacillus: Bacillus velezensis
Miao Ye, Xiangfang Tang, Ru Yang, Hongfu Zhang, Fangshu Li, Fangzheng Tao, Fei Li, Zaigui Wang
ACS Chemical Biology.2018; 13(3): 500. CrossRef
Comparison of optimal conditions for mass production of carboxymethylcellulase by Escherichia coli JM109/A-68 with other recombinants in pilot-scale bioreactor
Myung-Hwan Kim, Wa Gao, Chung-Han Chung, Jin-Woo Lee
Biotechnology and Bioprocess Engineering.2017; 22(2): 142. CrossRef
Construction of a recombinant Escherichia coli JM109/A-68 for production of carboxymethylcellulase and comparison of its production with its wild type, Bacillus velezensis A-68 in a pilot-scale bioreactor
Myung-Hwan Kim, Duk-Un Kang, Jin-Woo Lee
Biotechnology and Bioprocess Engineering.2016; 21(5): 601. CrossRef

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