1
|
Vávrová S, Grones J, Šoltys K, Celec P, Turňa J. The tellurite resistance gene cluster of pathogenic bacteria and its effect on oxidative stress response. Folia Microbiol (Praha) 2024; 69:433-444. [PMID: 38261148 PMCID: PMC11003894 DOI: 10.1007/s12223-024-01133-8] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 01/12/2024] [Indexed: 01/24/2024]
Abstract
Tellurite resistance gene clusters have been identified in numerous pathogenic bacteria, including clinical isolates of Escherichia coli. The rareness of tellurium in host organisms and the noncontaminated environment raises a question about the true functionality of tellurite resistance gene clusters in pathogenesis and their possible contribution to bacterial fitness. The study aims to point out the beneficial effects of the tellurite resistance gene cluster of pathogenic bacteria to survive in ROS-rich environments. Here, we analysed the bacterial response to oxidative stress conditions with and without tellurite resistance gene clusters, which are composed of terWY1XY2Y3 and terZABCDEF genes. By measuring the levels of protein carbonylation, lipid peroxidation, and expression changes of oxidative stress genes upon oxidative stress, we propose a tellurite resistance gene cluster contribution to the elimination of oxidative damage, potentially increasing fitness and resistance to reactive oxygen species during macrophage attack. We have shown a different beneficial effect of various truncated versions of the tellurite resistance gene cluster on cell survival. The terBCDEF genes increased the survival of E. coli strain MC4100 by 13.21%, terW and terZABCDEF by 10.09%, and terWY1XY2Y3 and terZABCDEF by 25.57%, respectively. The ability to survive tellurite treatment is the most significant at 44.8% in wild clinical strain KL53 compared to laboratory strain E. coli MC4100 due to a complete wild-type plasmid presence.
Collapse
Affiliation(s)
- Silvia Vávrová
- Faculty of Natural Sciences, Department of Molecular Biology, Comenius University in Bratislava, Bratislava, Slovak Republic.
| | - Jozef Grones
- Faculty of Natural Sciences, Department of Molecular Biology, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Katarína Šoltys
- Faculty of Natural Sciences, Department of Microbiology and Virology, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Peter Celec
- Faculty of Medicine, Institute of Molecular Biomedicine, Comenius University in Bratislava, Bratislava, Slovak Republic
- Faculty of Medicine, Institute of Pathophysiology, Comenius University in Bratislava, Bratislava, Slovak Republic
| | - Ján Turňa
- Faculty of Natural Sciences, Department of Molecular Biology, Comenius University in Bratislava, Bratislava, Slovak Republic
| |
Collapse
|
2
|
Šoltys K, Lendvorský L, Hric I, Baranovičová E, Penesová A, Mikula I, Bohmer M, Budiš J, Vávrová S, Grones J, Grendar M, Kolísek M, Bielik V. Strenuous Physical Training, Physical Fitness, Body Composition and Bacteroides to Prevotella Ratio in the Gut of Elderly Athletes. Front Physiol 2021; 12:670989. [PMID: 34239449 PMCID: PMC8257935 DOI: 10.3389/fphys.2021.670989] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/05/2021] [Indexed: 12/21/2022] Open
Abstract
Regular physical activity seems to have a positive effect on the microbiota composition of the elderly, but little is known about the added possible benefits of strenuous endurance training. To gain insight into the physiology of the elderly and to identify biomarkers associated with endurance training, we combined different omics approaches. We aimed to investigate the gut microbiome, plasma composition, body composition, cardiorespiratory fitness, and muscle strength of lifetime elderly endurance athletes (LA) age 63.5 (95% CI 61.4, 65.7), height 177.2 (95% CI 174.4, 180.1) cm, weight 77.8 (95% CI 75.1, 80.5) kg, VO2max 42.4 (95% CI 39.8, 45.0) ml.kg–1.min–1 (n = 13) and healthy controls age 64.9 (95% CI 62.1, 67.7), height 174.9 (95% CI 171.2, 178.6) cm, weight 83.4 (95% CI 77.1, 89.7) kg, VO2max 28.9 (95% CI 23.9, 33.9), ml.kg–1.min–1 (n = 9). Microbiome analysis was performed on collected stool samples further subjected to 16S rRNA gene analysis. NMR-spectroscopic analysis was applied to determine and compare selected blood plasma metabolites mostly linked to energy metabolism. The machine learning (ML) analysis discriminated subjects from the LA and CTRL groups using the joint predictors Bacteroides 1.8E + 00 (95% CI 1.1, 2.5)%, 3.8E + 00 (95% CI 2.7, 4.8)% (p = 0.002); Prevotella 1.3 (95% CI 0.28, 2.4)%, 0.1 (95% CI 0.07, 0.3)% (p = 0.02); Intestinimonas 1.3E-02 (95% CI 9.3E-03, 1.7E-02)%, 5.9E-03 (95% CI 3.9E-03, 7.9E-03)% (p = 0.002), Subdoligranulum 7.9E-02 (95% CI 2.5E-02, 1.3E-02)%, 3.2E-02 (95% CI 1.8E-02, 4.6E-02)% (p = 0.02); and the ratio of Bacteroides to Prevotella 133 (95% CI -86.2, 352), 732 (95% CI 385, 1079.3) (p = 0.03), leading to an ROC curve with AUC of 0.94. Further, random forest ML analysis identified VO2max, BMI, and the Bacteroides to Prevotella ratio as appropriate, joint predictors for discriminating between subjects from the LA and CTRL groups. Although lifelong endurance training does not bring any significant benefit regarding overall gut microbiota diversity, strenuous athletic training is associated with higher cardiorespiratory fitness, lower body fat, and some favorable gut microbiota composition, all factors associated with slowing the rate of biological aging.
Collapse
Affiliation(s)
- Katarína Šoltys
- Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia.,Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia
| | - Leonard Lendvorský
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia
| | - Ivan Hric
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia
| | - Eva Baranovičová
- Biomedical Center Martin, Jessenius Faculty of Medicine in Matin, Comenius University in Bratislava, Martin, Slovakia
| | - Adela Penesová
- Institute of Clinical and Translational Research Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Ivan Mikula
- The Concern Foundation Laboratories at The Lautenberg Center for Immunology and Cancer Research, Israel-Canada Medical Research Institute, Faculty of Medicine, The Hebrew University, Jerusalem, Israel
| | - Miroslav Bohmer
- Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia
| | - Jaroslav Budiš
- Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia
| | - Silvia Vávrová
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Jozef Grones
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Marian Grendar
- Biomedical Center Martin, Jessenius Faculty of Medicine in Matin, Comenius University in Bratislava, Martin, Slovakia
| | - Martin Kolísek
- Biomedical Center Martin, Jessenius Faculty of Medicine in Matin, Comenius University in Bratislava, Martin, Slovakia
| | - Viktor Bielik
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia
| |
Collapse
|
3
|
Bielik V, Hric I, Baláž V, Penesová A, Vávrová S, Grones J, Bokor B, Budiš J, Bohmer M, Minárik G, Augustovičová D, Šoltys K. Gut Microbiota Diversity in Lean Athletes Is Associated with Positive Energy Balance. Ann Nutr Metab 2020; 76:242-250. [PMID: 32894839 DOI: 10.1159/000509833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 06/30/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION In contrast to obesity, little is known about the human lean phenotype associated with gut microbiota composition. OBJECTIVE We aimed to investigate whether the bacterial composition of lean athletes with a positive energy balance differs from the equal-calorie food group. METHODS Twenty-four male participants were included in this cross-sectional study: lean athletes with a positive energy balance (LA, n 12) and control group athletes (CTRLs, n 12). Nutritional data, resting and total energy expenditure, and body composition were determined. DNA was extracted from stool samples and subjected to 16S rRNA gene analysis. RESULTS We found 7 differentially abundant bacterial taxa between the LA and CTRL groups. Of those, 5 were significantly less abundant and 2 were enriched in the LA group. The following categories significantly associated with the community structure were identified: body fat parameters, BMI, energy intake and expenditure, oxygen consumption, and respiratory exchange ratio. CONCLUSIONS Although we are far from a detailed interpretation of lean human body maintenance, the primary findings of our study suggest that gut microbial composition may be a factor influencing the regulation of weight gain in lean athletes with a positive energy balance.
Collapse
Affiliation(s)
- Viktor Bielik
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia ,
| | - Ivan Hric
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia
| | - Vladimír Baláž
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia
| | - Adela Penesová
- Institute of Clinical and Translational Research Biomedical Center, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Silvia Vávrová
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Jozef Grones
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| | - Boris Bokor
- Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia
| | - Jaroslav Budiš
- Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia.,Geneton Ltd., Bratislava, Slovakia.,Slovak Centre of Scientific and Technical Information, Bratislava, Slovakia
| | - Miroslav Bohmer
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia.,Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia
| | | | - Dušana Augustovičová
- Department of Biological and Medical Science, Faculty of Physical Education and Sport, Comenius University in Bratislava, Bratislava, Slovakia
| | - Katarína Šoltys
- Comenius University Science Park, Comenius University in Bratislava, Bratislava, Slovakia.,Department of Microbiology and Virology, Faculty of Natural Sciences, Comenius University in Bratislava, Bratislava, Slovakia
| |
Collapse
|
4
|
Bugala J, Cimová V, Grones P, Grones J. Characterization of newly identified DnaA and DnaB proteins from Acetobacter. Res Microbiol 2016; 167:655-668. [PMID: 27404460 DOI: 10.1016/j.resmic.2016.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 06/02/2016] [Revised: 06/19/2016] [Accepted: 06/27/2016] [Indexed: 10/21/2022]
Abstract
Although chromosomal replication is an essential feature of the bacterial life cycle, the replication mechanism and involved molecular players have never been properly characterized in the Acetobacter genera. Thanks to whole-genome sequencing, the unknown replication proteins from Acetobacter pasteurianus and Acetobacter orleanensis, DnaA-like and DnaB-like, could be identified. Despite the low nucleotide or amino acid similarity to the respective orthologs from Escherichia coli, their involvement during replication regulation was corroborated by artificial microRNA. In the Acetobacter genome, a novel replication origin, oriAo, was detected with three 9-nucleotide-long DnaA boxes to which DnaA-like proteins bind actively. Bacterial two-hybrid systems and co-immunoprecipitation confirmed the homologous and heterologous interactions between DnaA-like and DnaB-like proteins with their E. coli orthologs. This communication is due to the conserved tryptophan at position 6 for E. coli or 25 for Acetobacter that unables DnaA-like proteins to form oligomeric protein structures after its substitution. Altogether, these results provide novel insights into the genome replication mechanism in Acetobacter.
Collapse
Affiliation(s)
- Juraj Bugala
- Department of Molecular Biology, Comenius University, Mlynská Dolina B2-122, 842 15 Bratislava, Slovak Republic.
| | - Viera Cimová
- Department of Molecular Biology, Comenius University, Mlynská Dolina B2-122, 842 15 Bratislava, Slovak Republic.
| | - Peter Grones
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center, Swedish University of Agricultural Sciences, 901 83 Umeå, Sweden.
| | - Jozef Grones
- Department of Molecular Biology, Comenius University, Mlynská Dolina B2-122, 842 15 Bratislava, Slovak Republic.
| |
Collapse
|
5
|
Grones P, Grones J. Characterization of the theta replication plasmid pGR7 from Acetobacter aceti CCM 3610. Res Microbiol 2012; 163:419-26. [PMID: 22842078 DOI: 10.1016/j.resmic.2012.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 06/21/2012] [Indexed: 10/28/2022]
Abstract
A cryptic plasmid of Acetobacter aceti CCM 3610, designated pGR7, was sequenced and characterized. It is a 2446-bp circular molecule with a G + C content of 30%, which is unusual when compared to the already known plasmids isolated from Acetobacter genera. Sequence analysis of pGR7 revealed three putative open reading frames (ORFs). ORF1 displays low similarity with other Acetobacter plasmid replication proteins. The other two ORFs show similarities only to hypothetical proteins and do not encode any important protein. The replication module comprises a DnaA box-like sequence, indirect repeats, a potential prokaryotic promoter and the rep gene. The rep module organization is similar to that found in other theta-replicating plasmids from acetic acid bacteria that stably maintain in both Acetobacter and Escherichia coli, with two repeated sequences containing modules. Nevertheless, the pGR7 plasmid could replicate and be stably maintained only in Acetobacter strains and not in E. coli, another uncommon feature of this plasmid. The Rep protein was cloned into the pET30a + expression vector and purified by high-performance liquid chromatography. The helicase activity was determined and the ability of the protein to bind to the plasmid regulation region was confirmed by an electrophoretic mobility shift assay. The plasmid was stable in the Acetobacter cells after cultivation under nonselective conditions. By real-time polymerase chain reaction, the relative copy number of pGR7 was estimated to be seven copies per host chromosome equivalent.
Collapse
Affiliation(s)
- Peter Grones
- Department of Plant Systems Biology, VIB, Technologiepark 927, 9052 Gent, Belgium.
| | | |
Collapse
|
6
|
Grones P, Grones J. Cloning, expression, purification and characterization of replication protein from plasmid pGP2 from Acetobacter estunensis. ACTA ACUST UNITED AC 2010. [DOI: 10.4236/abb.2010.15055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
7
|
Abstract
16S-23S rDNA internal transcribed spacer regions (ITS) similarities were determined in 8 Acetobacter and 1 Gluconacetobacter strains. ITS-PCR amplification of the 16S-23S spacers showed 2 products of similar size in 7 strains; only 1 product of similar size was found in the 2 remaining strains. Analysis of the PCR products using restriction endonucleases HaeIII, HpaII and AluI revealed 3 different restriction groups of A. pasteurianus for AluI and HaeIII, and 4 restriction groups for HpaII. ITS nucleotide sequences of all studied strains exhibited a 52-98% similarity.
Collapse
Affiliation(s)
- M Kretová
- Department of Molecular Biology, Faculty of Science, Comenius University, 842 15 Bratislava, Slovakia
| | | |
Collapse
|
8
|
Kretová M, Szemes T, Laco J, Gronesová P, Grones J. Analysis of replication region of the cryptic plasmid pAG20 from Acetobacter aceti 3620. Biochem Biophys Res Commun 2005; 328:27-31. [PMID: 15670745 DOI: 10.1016/j.bbrc.2004.12.136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2004] [Indexed: 10/26/2022]
Abstract
The DNA sequence of small cryptic plasmid pAG20 in Acetobacter aceti was determined at 3064 bp with 51.6% GC pairs. The plasmid encoded a 186 amino acid protein which is important for plasmid replication in Gram-negative bacteria except Escherichia coli. Two 21 bp large direct repeat sequence 1 and two 13 bp direct repeat sequence 2 were determined in the regulation region upstream from gene encoded Rep protein. Vector pAG24 with kanamycin gene and two deletion derivatives pAG25 and pAG26 without rep gene from plasmid pAG20 were constructed. Plasmid pAG24 was replicated in a broad host range like E. coli, Acetobacter pasteurianus, A. aceti, Comanomonas spp., Serratia marcescens, and Shigella spp.
Collapse
Affiliation(s)
- Miroslava Kretová
- Department of Molecular Biology, Comenius University, Faculty of Natural Sciences, Mlynska dolina B-2, 842 15 Bratislava 4, Slovak Republic
| | | | | | | | | |
Collapse
|
9
|
Abstract
Four cryptic plasmids pAP1, pAP2, pAP3, and pAP4 with their replication regions AP were isolated from Gram-negative bacteria Acetobacter pasteurianus 2374 and characterised by sequence analyses. All plasmids were carrying the kanamycin resistance gene. Three of four plasmids pAP2, pAP3, and pAP4 encode an enzyme that confers ampicillin resistance to host cells. Moreover, the tetracycline resistance gene was identified only in pAP2 plasmid. All plasmids are capable to coexist with each other in Acetobacter cells. On the other hand, the coexistence of more than one plasmid is excluded in Escherichia coli. The nucleotide sequence of replication regions showed significant homology. The nucleotide and protein sequence analyses of resistance genes of all plasmids were compared with transposons Tn3, Tn10, and Tn903 which revealed significant differences in the primary structure, however no functional changes of gene were obtained.
Collapse
Affiliation(s)
- Ján Krahulec
- Department of Molecular Biology, Faculty of Natural Science, Comenius University, Mlynska dolina B-2, 842 15, Bratislava 4, Slovak Republic
| | | | | |
Collapse
|
10
|
Vizváryová M, Stuchlík S, Grones J, Macor M, Turna J. Escherichia coli strain with a deletion of the chromosomal ampC gene marked with TcR, suitable for production of penicillin G acylase. Folia Microbiol (Praha) 2001; 44:625-8. [PMID: 11097022 DOI: 10.1007/bf02825651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Escherichia coli strain which contains a marker of tetracycline resistance gene (TcR) placed by P1 transduction beside the chromosomal deletion of ampC gene (delta ampC) coding for beta-lactamase was constructed. Such introduction of TcR marker permits a fast and simple selection for the transfer of delta ampC by P1 transduction into industrial E. coli strains. This approach was used for constructing an E. coli strain suitable for penicillin acylase production.
Collapse
Affiliation(s)
- M Vizváryová
- Department of Molecular Biology, Comenius University, Bratislava, Slovakia
| | | | | | | | | |
Collapse
|
11
|
Abstract
The unicellular flagellate Euglena gracilis was used in order to assess the inhibition of N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and N-methyl-N-nitrosourea (MNU) mutagenicities, which induce white mutants due to the irreversible loss of chloroplasts. All tested compounds, including o-aminobenzoic acid and p-aminobenzoic acid, salicylic acid, acetylsalicylic acid, sodium salicylate and p-aminosalicylic acid, were not mutagenic per se and inhibited MNNG mutagenicity by at least 50%. The last two compounds inhibited by at least 50% also MNU mutagenicity.
Collapse
Affiliation(s)
- P Foltínová
- Institute of Cellular Biology, Comenius University, Bratislava, Slovak Republic
| | | |
Collapse
|
12
|
Grones J, Macor M, Bilská V. Cloning of sucrase operon with mini-Mu and plasmid-mediated metabolism of sucrose. Folia Microbiol (Praha) 1996; 41:315-9. [PMID: 9131788 DOI: 10.1007/bf02814707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The in vivo cloning system based on mini-Mu derivatives was used for cloning the sucrase operon. We constructed several recombinant plasmids pJT21, pMM2324, pMM2325 with a complete sucrase operon. Two strains of Escherichia coli containing this plasmid replicon were able to grow on different concentrations of sucrose. The stability of recombinant plasmids was determined after cultivation under nonselective conditions. The stability after 5-d cultivation was higher than 75%.
Collapse
Affiliation(s)
- J Grones
- Department of Molecular Biology, Faculty of Science, Comenius University, Bratislava, Slovak Republic
| | | | | |
Collapse
|
13
|
Macor M, Beno J, Grones J, Siekel P, Novotný J. Euglena gracilis as a supplementary test organism for detecting biologically active compounds. Folia Microbiol (Praha) 1996; 41:48-52. [PMID: 9090824 DOI: 10.1007/bf02816340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The mutagenic activity of more than 120 antimicrobial agents and protective components was investigated. Only Kathon showed a consistent increase in revertant counts in the Ames test on Salmonella typhimurium. The hereditary bleaching test on Euglena gracilis used for detecting extranuclear mutations, showed positive results for Kathon, triethanolamine and diamine silver tetraborate.
Collapse
Affiliation(s)
- M Macor
- Department of Molecular Biology, Faculty of Science, Comenius University, Bratislava, Slovakia
| | | | | | | | | |
Collapse
|
14
|
Grones J, Turna J. Transformation of microorganisms with the plasmid vector with the replicon from pAC1 from Acetobacter pasteurianus. Biochem Biophys Res Commun 1995; 206:942-7. [PMID: 7832808 DOI: 10.1006/bbrc.1995.1133] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A number of gram-negative and gram-positive bacteria species was screened for the expression of the gram-negative plasmid pACK5 and pACT72 with replicon of pAC1 plasmid from Acetobacter pasteurianus. As was described previously, both plasmids were expressed in Escherichia coli, Acetobacter pasteurianus, Acetobacter aceti, Shigella spp. and Citrobacter spp. Expressions of plasmids were successful in twelve species tested, Comamonas terrigena, Salmonella typhimurium, Serratia marcescens, Bacillus cereus, Bacillus megatericum, Bacillus subtilis, Lactobacillus helveticus, Micrococcus luteus, Sarcina lutea, Staphylococcus aureus, Staphylococcus epidermidis, Streptoccocus feacalis, and the stability of plasmid DNA was tested after cultivation in non-selective conditions.
Collapse
Affiliation(s)
- J Grones
- Department of Molecular Biology, Faculty of Natural Science, Comenius University, Bratislava, Slovak Republic
| | | |
Collapse
|
15
|
|
16
|
Foltínová P, Grones J. Protective effect of ascorbic acid on bleaching activity of N-methyl-N′-nitro-N-nitrosoguanidine and furazolidone. Folia Microbiol (Praha) 1993. [DOI: 10.1007/bf02814403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
17
|
Abstract
A new site-specific endonuclease has been isolated from Acetobacter pasteurianus and has been named ApaBI. The enzyme recognizes 35 cleavage sites on bacteriophage lambda DNA, 20 sites on adenovirus-2 DNA and 2 sites on plasmid pBR322. The recognition sequence for this enzyme is 3'-CGT/NNNNNACG-5' 5'-GCANNNNN/TGC-3'.
Collapse
Affiliation(s)
- J Grones
- Department of Biochemistry, Faculty of Natural Science, Comenius University, Bratislava Slovak Republic
| | | |
Collapse
|
18
|
Abstract
A panel of recombinant plasmids pACK5 and pACT7 was prepared by introducing kanamycin and tetracycline resistance into the partially split plasmid pAC1 which contained replicon isolated from Acetobacter pasteurianus. The replicon in plasmid pAC1 is compatible with the ColE1 replicon. Compared to pBR322, the plasmid had more than 30 copies per chromosome in Escherichia coli cells. Plasmids were transformed into E. coli DH1, Acetobacter pasteurianus 3614, Acetobacter aceti 3620, Shigella, Citrobacter, and Brevibacterium flavum cells, and the stability of plasmid DNA was tested after cultivation in nonselective conditions.
Collapse
Affiliation(s)
- J Grones
- Department of Molecular Biology, Faculty of Natural Science, Comenius University, Bratislava, Czech and Slovak Federal Republic
| | | | | |
Collapse
|
19
|
Abstract
New cloning vectors were prepared with the aid of a large plasmid isolated from Acetobacter pasteurianus and from plasmids pBR322 and pUC4-KAPA. Of the prepared cloning vectors, pACK5 contains a gene coding for kanamycin resistance, pACT7 and pACT71 contain a gene coding for tetracycline resistance and vector pACG3 with a gene coding for both kanamycin and tetracycline resistance. The vectors prepared only contained the beginning of replication from the pAC1 plasmid and possessed the ability to replicate within E. coli and A. pasteurianus. The vectors are highly stable in both strains and during the 5-d cultivation under nonselective conditions are not eliminated.
Collapse
Affiliation(s)
- J Grones
- Department of Biochemistry, Faculty of Science, Comenius University, Bratislava, Czechoslovakia
| | | |
Collapse
|
20
|
Abstract
A new Type II restriction endonuclease ApaCI purified from Acetobacter pasteurianus is an isoschizomer of BamHI that cleaves at the nucleotide sequence 5'-G/GATCC-3' of double-stranded DNA. The single restriction activity present in this strain permits rapidly purified 30,000 units of cleavage activity from 10 g of freshly harvested cells. The resulting ApaCI preparation is free of contaminant nuclease activities that might interfere with in vitro manipulation of DNA.
Collapse
Affiliation(s)
- J Grones
- Department of Biochemistry, Faculty of Science, Comenius University, Bratislava, Czechoslovakia
| | | |
Collapse
|
21
|
Affiliation(s)
- J Grones
- Department of Biochemistry, Faculty of Science, Comenius University, Bratislava, Czech and Slovak Federal Republic
| | | |
Collapse
|
22
|
Grones J. Effect of activators and inhibitors on the activity of mitochondrial DNA polymerase. Folia Microbiol (Praha) 1991; 36:229-33. [PMID: 1841856 DOI: 10.1007/bf02814353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
At a concentration of 0.5 to 3 mmol/l, ATP stimulates the activity of mitochondrial DNA polymerase of Neurospora crassa under the optimum reaction conditions; at higher concentrations, an inhibitory effect is observed. 4-Chloromercuribenzoate (1 mmol/L), a thiol inhibitor, decreases the enzyme activity two-fold, while N-ethylmalcimide (2 mmol/L) has no effect. Ethidium bromide (up to 10 mumol/L) and heparin (up to 0.4 micrograms/mL) reduce the activity by 60%. ddTTP does not affect the DNA polymerase reaction. The best in vitro template is the activated calf-thymus DNA.
Collapse
Affiliation(s)
- J Grones
- Department of Biochemistry, Faculty of Nature Science, Comenius University, Bratislava, Czechoslovakia
| |
Collapse
|