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Koniuchovaitė A, Petkevičiūtė A, Bernotaitė E, Gricajeva A, Gegeckas A, Kalėdienė L, Kaunietis A. Novel leaderless bacteriocin geobacillin 6 from thermophilic bacterium Parageobacillus thermoglucosidasius. Front Microbiol 2023; 14:1207367. [PMID: 37396380 PMCID: PMC10311245 DOI: 10.3389/fmicb.2023.1207367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 05/24/2023] [Indexed: 07/04/2023] Open
Abstract
Bacterial resistance to conventional antibiotics has urged us to develop alternative strategies against bacterial pathogens. Moreover, a demand for food products containing no chemical preservatives has led us to search for new alternative technologies for food preservation. Bacteriocins - ribosomally synthesized antimicrobial peptides - have been proposed as a new alternative to conventional antibiotics or chemicals for food preservation. This study describes biosynthesis and characterization of a novel leaderless bacteriocin, geobacillin 6, which was identified in the thermophilic bacterium Parageobacillus thermoglucosidasius. Its amino acid sequence shows low similarity to other bacteriocins and it is the first leaderless-type bacteriocin identified in thermophilic bacteria. Based on structure assessment, the bacteriocin forms a multi-helix bundle. Geobacillin 6 exhibits a relatively narrow antimicrobial spectrum, it is active in the μM range and against Gram-positive bacteria, mostly thermophilic species closely related to the producer strain. Bacteriocin demonstrates stability over pH 3-11 and is highly thermostable, retaining 100% of its activity after incubation at 95°C for 6 h. Geobacillin 6 has potential in the food industry and biotechnological processes where contamination with thermophilic bacteria is undesirable.
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Petruleviciene M, Parvin M, Savickaja I, Gece G, Naujokaitis A, Pakstas V, Pilipavicius J, Gegeckas A, Gaigalas G, Juodkazyte J. WO3 coatings for photoelectrochemical synthesis of persulfate: efficiency, stability and applicability. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05144-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mažylytė R, Kaziūnienė J, Orola L, Valkovska V, Lastauskienė E, Gegeckas A. Phosphate Solubilizing Microorganism Bacillus sp. MVY-004 and Its Significance for Biomineral Fertilizers' Development in Agrobiotechnology. Biology (Basel) 2022; 11:biology11020254. [PMID: 35205120 PMCID: PMC8869773 DOI: 10.3390/biology11020254] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/01/2022] [Accepted: 02/04/2022] [Indexed: 02/04/2023]
Abstract
In this study, a phosphate solubilizing microorganism was isolated from the soil of an agricultural field in Lithuania. Based on 16S rRNA gene sequence analysis, the strain was identified as Bacillus sp. and submitted to the NCBI database, Sector of Applied Bio-catalysis, University Institute of Biotechnology, Vilnius, Lithuania and allocated the accession number KY882273. The Bacillus sp. was assigned with the number MVY-004. The culture nutrient medium and growth conditions were optimized: molasses was used as a carbon source; yeast extract powder was used as an organic source; NH4H2PO4 was used as a nitrogen source; the culture growth temperature was 30 ± 0.5 °C; the initial value of pH was 7.0 ± 0.5; the partial pressure of oxygen (pO2) was 60 ± 2.0; the mixer revolutions per minute (RPM) were 25-850, and the incubation and the fermentation time was 48-50 h. Analysis using Liquid Chromatography Time-of-Flight Mass Spectrometry (LC-TOF/MS) results showed that Bacillus sp. MVY-004 produced organic acids such as citric, succinic, 2-ketogluconic, gluconic, malic, lactic, and oxalic acids. Furthermore, the experiment showed that Bacillus sp. MVY-004 can also produce the following phytohormones: indole-3-acetic (IAA), jasmonic (JA), and gibberellic (GA3) acids. In the climate chamber, the experiment was performed using mineral fertilizer (NPS-12:40:10 80 Kg ha-1) and mineral fertilizers in combination with Bacillus sp. MVY-004 cells (NPS-12:40:10 80 Kg ha-1 + Bacillus sp. MVY-004) in loamy soil. Analysis was performed in three climate conditions: normal (T = 20 °C; relative humidity 60%); hot and dry (T = 30 °C; relative humidity 30%); hot and humid (T = 30 °C; relative humidity 80%).
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Affiliation(s)
- Raimonda Mažylytė
- Life Sciences Center, Institute of Biosciences, Vilnius University, LT-10257 Vilnius, Lithuania; (E.L.); (A.G.)
- Correspondence:
| | - Justina Kaziūnienė
- Institute of Agriculture, Lithuanian Research Centre for Agriculture and Forestry, LT-58344 Akademija, Lithuania;
| | - Liana Orola
- Faculty of Chemistry, University of Latvia, LV-1004 Riga, Latvia; (L.O.); (V.V.)
| | - Valda Valkovska
- Faculty of Chemistry, University of Latvia, LV-1004 Riga, Latvia; (L.O.); (V.V.)
| | - Eglė Lastauskienė
- Life Sciences Center, Institute of Biosciences, Vilnius University, LT-10257 Vilnius, Lithuania; (E.L.); (A.G.)
| | - Audrius Gegeckas
- Life Sciences Center, Institute of Biosciences, Vilnius University, LT-10257 Vilnius, Lithuania; (E.L.); (A.G.)
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Juodkazytė J, Petrulevičienė M, Parvin M, Šebeka B, Savickaja I, Pakštas V, Naujokaitis A, Virkutis J, Gegeckas A. Activity of sol-gel derived nanocrystalline WO3 films in photoelectrochemical generation of reactive chlorine species. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114277] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Gudiukaite R, Malunavicius V, Szczesniak A, Sadauskas M, Druteika G, Blekaitis K, Gegeckas A, Lastauskiene E. Geobacillus sp. 95 as a source of enzymes with special characteristics: Characterization of thermostable lipases, esterases, ureases and nitrate reductases. N Biotechnol 2018. [DOI: 10.1016/j.nbt.2018.05.1161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Gegeckas A, Šimkutė A, Gudiukaitė R, Čitavičius DJ. Characterization and application of keratinolytic paptidases from Bacillus spp. Int J Biol Macromol 2018; 113:1206-1213. [PMID: 29545060 DOI: 10.1016/j.ijbiomac.2018.03.046] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/06/2018] [Accepted: 03/11/2018] [Indexed: 12/25/2022]
Abstract
Solid keratin-rich waste management is one of essential research area in nowadays. Conventional chemical and high thermal keratin waste decomposition methods are fully explored and not enough effective for future biotechnology perspectives. However, traditional keratin-rich waste decomposition methods could be replaced by environmentally-friendly and economical microbial keratin waste biodegradation methods without energy wastage and essential amino acids and nutrition elements loss. In this study BPKer and BAKer keratinolytic peptidases from Bacillus sp. AD-W and Bacillus sp. AD-AA3 strains, respectively, were successfully produced, purified and biochemically characterized. Physical and chemical characterization of native BPKer and BAKer suggested that new keratinolytic peptidases are powerful biocatalysts for efficient keratin waste biodegradation and can replace conventional insufficient non-biological hydrolysis processes without energy, important amino acids and nutritional elements loss. High value bio-active hydrolysis products - peptides obtained from keratin waste biodegradation by BPKer and BAKer are suitable for industrial applications in white and green biotechnology.
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Affiliation(s)
- Audrius Gegeckas
- Department of Microbiology & Biotechnology, Life Sciences Center (LSC), Vilnius University, Saulėtekio ave. 7, LT-10257 Vilnius, Lithuania.
| | - Aistė Šimkutė
- Department of Microbiology & Biotechnology, Life Sciences Center (LSC), Vilnius University, Saulėtekio ave. 7, LT-10257 Vilnius, Lithuania
| | - Renata Gudiukaitė
- Department of Microbiology & Biotechnology, Life Sciences Center (LSC), Vilnius University, Saulėtekio ave. 7, LT-10257 Vilnius, Lithuania
| | - Donaldas Jonas Čitavičius
- Department of Microbiology & Biotechnology, Life Sciences Center (LSC), Vilnius University, Saulėtekio ave. 7, LT-10257 Vilnius, Lithuania
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Gudiukaite R, Sadauskas M, Gegeckas A, Malunavicius V, Citavicius D. Construction of a novel lipolytic fusion biocatalyst GDEst-lip for industrial application. J Ind Microbiol Biotechnol 2017; 44:799-815. [PMID: 28105534 DOI: 10.1007/s10295-017-1905-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 01/07/2017] [Indexed: 01/11/2023]
Abstract
The gene encoding esterase (GDEst-95) from Geobacillus sp. 95 was cloned and sequenced. The resulting open reading frame of 1497 nucleotides encoded a protein with calculated molecular weight of 54.7 kDa, which was classified as a carboxylesterase with an identity of 93-97% to carboxylesterases from Geobacillus bacteria. This esterase can be grouped into family VII of bacterial lipolytic enzymes, was active at broad pH (7-12) and temperature (5-85 °C) range and displayed maximum activity toward short acyl chain p-nitrophenyl (p-NP) esters. Together with GD-95 lipase from Geobacillus sp. strain 95, GDEst-95 esterase was used for construction of fused chimeric biocatalyst GDEst-lip. GDEst-lip esterase/lipase possessed high lipolytic activity (600 U/mg), a broad pH range of 6-12, thermoactivity (5-85 °C), thermostability and resistance to various organic solvents or detergents. For these features GDEst-lip biocatalyst has high potential for applications in various industrial areas. In this work the effect of additional homodomains on monomeric GDEst-95 esterase and GD-95 lipase activity, thermostability, substrate specificity and catalytic properties was also investigated. Altogether, this article shows that domain fusing strategies can modulate the activity and physicochemical characteristics of target enzymes for industrial applications.
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Affiliation(s)
- Renata Gudiukaite
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, 10257, Vilnius, Lithuania.
| | - Mikas Sadauskas
- Department of Molecular Microbiology and Biotechnology, Institute of Biochemistry, Vilnius University, Sauletekio Avenue 7, 10257, Vilnius, Lithuania
| | - Audrius Gegeckas
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, 10257, Vilnius, Lithuania
| | - Vilius Malunavicius
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, 10257, Vilnius, Lithuania
| | - Donaldas Citavicius
- Institute of Biosciences, Vilnius University, Sauletekio Avenue 7, 10257, Vilnius, Lithuania
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Gudiukaitė R, Gegeckas A, Sadauskas M, Citavicius D. Detection of Asp371, Phe375, and Tyr376 Influence on GD-95-10 Lipase Using Alanine Scanning Mutagenesis. Appl Biochem Biotechnol 2015; 178:654-69. [DOI: 10.1007/s12010-015-1900-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Accepted: 10/13/2015] [Indexed: 11/30/2022]
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Gegeckas A, Gudiukaitė R, Debski J, Citavicius D. Keratinous waste decomposition and peptide production by keratinase from Geobacillus stearothermophilus AD-11. Int J Biol Macromol 2015; 75:158-65. [PMID: 25625783 DOI: 10.1016/j.ijbiomac.2015.01.031] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 12/22/2014] [Accepted: 01/19/2015] [Indexed: 10/24/2022]
Abstract
A keratinolytic proteinase was cloned from thermophilic bacterium Geobacillus stearothermophilus AD-11 and was expressed in Escherichia coli BL21(DE3). Recombinant keratinolytic proteinase (RecGEOker) with an estimated molecular weight of 57 kDa was purified and keratinase activity was measured. RecGEOker showed optimal activity at pH 9 and 60 °C. Recombinant keratinolytic proteinase showed the highest substrate specificity toward keratin from wool > collagen > sodium caseinate > gelatin > and BSA in descending order. RecGEOker is applicable for efficient keratin waste biodegradation and can replace conventional non-biological hydrolysis processes. High-value small peptides obtained from enzymatic biodegradation by RecGEOker are suitable for industrial application in white and/or green biotechnology for use as major additives in various products.
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Affiliation(s)
- Audrius Gegeckas
- Department of Microbiology and Biotechnology, Faculty of Natural Sciences, Vilnius University, M. K. Čiurlionio 21/27, LT-03101 Vilnius, Lithuania.
| | - Renata Gudiukaitė
- Department of Microbiology and Biotechnology, Faculty of Natural Sciences, Vilnius University, M. K. Čiurlionio 21/27, LT-03101 Vilnius, Lithuania
| | - Janusz Debski
- Mass Spectrometry Laboratory, Institute of Biochemistry and Biophysics, Polish Academy of Science, Pawinskiego 5a, 02-106 Warsaw, Poland
| | - Donaldas Citavicius
- Department of Microbiology and Biotechnology, Faculty of Natural Sciences, Vilnius University, M. K. Čiurlionio 21/27, LT-03101 Vilnius, Lithuania
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Gegeckas A, Gudiukaitė R, Citavicius D. Keratinolytic proteinase from Bacillus thuringiensis AD-12. Int J Biol Macromol 2014; 69:46-51. [DOI: 10.1016/j.ijbiomac.2014.05.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 05/06/2014] [Accepted: 05/07/2014] [Indexed: 11/15/2022]
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Gudiukaitė R, Gegeckas A, Kazlauskas D, Citavicius D. Influence of N- and/or C-terminal regions on activity, expression, characteristics and structure of lipase from Geobacillus sp. 95. Extremophiles 2013; 18:131-45. [DOI: 10.1007/s00792-013-0605-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 11/14/2013] [Indexed: 12/15/2022]
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