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Dossche L, Veys E, Renson C, Spinoit AF, Vandamme E, Waterschoot M, Vande Walle J, Van Laecke E, Raes A. Voiding camp: A successful and unique bladder rehabilitation program for children with urinary incontinence. J Pediatr Urol 2024:S1477-5131(24)00259-6. [PMID: 38782683 DOI: 10.1016/j.jpurol.2024.05.002] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 04/15/2024] [Accepted: 05/07/2024] [Indexed: 05/25/2024]
Abstract
INTRODUCTION & BACKGROUND Standard urotherapy is a well-established treatment for children with incontinence, although it is often challenging for both child and parents, and not always successful. As an alternative, several in- and outpatient bladder training programs have shown positive results on achieving continence. However, the disadvantage is the hospital environment, which can be more stressful for the child, and also quite expensive for society. OBJECTIVE The aim was to evaluate the outcome on achieving continence following a voiding camp, where standard urotherapy was applied during a one-week stay at a regular summer youth camp, outside the hospital. STUDY DESIGN Retrospective analysis of 105 children with urinary incontinence, followed in an expert centre for urinary incontinence for at least one year. Data at 7 different time points, before, during and until 6 months after voiding camp were collected. RESULTS Even though all children had regular follow-up in an expert centre for urinary incontinence for at least one year before participating voiding camp, only 15% of the children reached the recommended amount of daily fluid intake (1.5 L/day). Once minimal daily fluid intake was re-established during the voiding camp, an immediate increase in the maximum voided volume (MVV), and a decrease in the number of wet days and wet nights per week was noted. This effect on a higher MVV remained even 3 months after voiding camp. DISCUSSION Although sufficient daily fluid intake is a well-established part of standard urotherapy, up until now there was no data that proved the positive impact of sufficient daily fluid intake on bladder volume training and achieving continence in children. CONCLUSION Voiding camp, as an unique bladder rehabilitation program for children with incontinence, is a successful alternative treatment option. Optimizing the daily fluid intake during voiding camp had a major positive impact on bladder volume training and achieving continence in children.
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Affiliation(s)
- L Dossche
- Department of Pediatric Nephrology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium; Faculty of Medicine and Health Sciences, Department of Internal Medicine & Pediatrics, Ghent University, Belgium.
| | - E Veys
- Faculty of Medicine and Health Sciences, Department of Internal Medicine & Pediatrics, Ghent University, Belgium
| | - C Renson
- Department of Pediatric Urology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium
| | - A F Spinoit
- Department of Pediatric Urology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium; Faculty of Medicine and Health Sciences, Department of Internal Medicine & Pediatrics, Ghent University, Belgium
| | - E Vandamme
- Department of Pediatric Urology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium
| | - M Waterschoot
- Department of Pediatric Urology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium
| | - J Vande Walle
- Department of Pediatric Nephrology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium; Faculty of Medicine and Health Sciences, Department of Internal Medicine & Pediatrics, Ghent University, Belgium
| | - E Van Laecke
- Department of Pediatric Urology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium
| | - A Raes
- Department of Pediatric Nephrology, Ghent University Hospital, C. Heymanslaan 10, 9000 Gent, Belgium; Faculty of Medicine and Health Sciences, Department of Internal Medicine & Pediatrics, Ghent University, Belgium
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Jamaer C, Vanderjeugt J, Berquin C, Vandamme E, Waterschoot M, Van Laecke E, Hoebeke P, Spinoit AF. Validation of a hands-on porcine bladder model for endoscopic correction of vesicoureteral reflux with bulking agents. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00625-5] [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: 02/12/2023]
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Sun A, Wu Y, Pot G, Vandamme E, Teschner W, Schwarz H. Glycine vs. L-Proline Stabilization of IGIV Solution: 18-Month Follow-up Data to Support Equally Effective Stabilization. J Allergy Clin Immunol 2012. [DOI: 10.1016/j.jaci.2011.12.912] [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: 11/25/2022]
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Vandamme E, Verstraete W. Special issue: Microbiology of energy biotechnology. Microb Biotechnol 2011; 2:537. [PMID: 21255286 PMCID: PMC3815361 DOI: 10.1111/j.1751-7915.2009.00132.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Sun A, Wu Y, Pot G, Vandamme E, Grossman W, Wolfgang T, Schwarz H. Glycine and L-proline Demonstrate Similar IgG Stabilization in Liquid Immunoglobulin Intravenous 10% (IGIV) Formulations. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.081] [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: 10/18/2022]
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Saerens K, Van Bogaert I, Soetaert W, Vandamme E. Production of glucolipids and specialty fatty acids from sophorolipids byPenicillium decumbensnaringinase: Optimization and kinetics. Biotechnol J 2009; 4:517-24. [DOI: 10.1002/biot.200800209] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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De Mey M, De Maeseneire S, Soetaert W, Vandamme E. Minimizing acetate formation in E. coli fermentations. J Ind Microbiol Biotechnol 2007; 34:689-700. [PMID: 17668256 DOI: 10.1007/s10295-007-0244-2] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Accepted: 07/08/2007] [Indexed: 10/23/2022]
Abstract
Escherichia coli remains the best-established production organism in industrial biotechnology. However, when aerobic fermentation runs at high growth rates, considerable amounts of acetate are accumulated as by-product. This by-product has negative effects on growth and protein production. Over the last 20 years, substantial research efforts have been expended on reducing acetate accumulation during aerobic growth of E. coli on glucose. From the onset it was clear that this quest would not be a simple or uncomplicated one. Simple deletion of the acetate pathway reduced the acetate accumulation, but other by-products were formed. This mini review gives a clear outline of these research efforts and their outcome, including bioprocess level approaches and genetic approaches. Recently, the latter seems to have some promising results.
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Affiliation(s)
- Marjan De Mey
- Laboratory of Industrial Microbiology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium.
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De Muynck C, Van der Borght J, De Mey M, De Maeseneire SL, Van Bogaert INA, Beauprez J, Soetaert W, Vandamme E. Development of a selection system for the detection of L-ribose isomerase expressing mutants of Escherichia coli. Appl Microbiol Biotechnol 2007; 76:1051-7. [PMID: 17619876 DOI: 10.1007/s00253-007-1084-8] [Citation(s) in RCA: 7] [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] [Received: 04/16/2007] [Revised: 06/08/2007] [Accepted: 06/10/2007] [Indexed: 10/23/2022]
Abstract
L-Arabinose isomerase (E.C. 5.3.1.14) catalyzes the reversible isomerization between L-arabinose and L-ribulose and is highly selective towards L-arabinose. By using a directed evolution approach, enzyme variants with altered substrate specificity were created and screened in this research. More specifically, the screening was directed towards the identification of isomerase mutants with L-ribose isomerizing activity. Random mutagenesis was performed on the Escherichia coli L-arabinose isomerase gene (araA) by error-prone polymerase chain reaction to construct a mutant library. To enable screening of this library, a selection host was first constructed in which the mutant genes were transformed. In this selection host, the genes encoding for L-ribulokinase and L-ribulose-5-phosphate-4-epimerase were brought to constitutive expression and the gene encoding for the native L-arabinose isomerase was knocked out. L-Ribulokinase and L-ribulose-5-phosphate-4-epimerase are necessary to ensure the channeling of the formed product, L-ribulose, to the pentose phosphate pathway. Hence, the mutant clones could be screened on a minimal medium with L-ribose as the sole carbon source. Through the screening, two first-generation mutants were isolated, which expressed a small amount of L-ribose isomerase activity.
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Abstract
In this review, the impact of industrial (or "white") biotechnology can have on our society and economy is discussed. An overview is given of industrial biotechnology and its applications in a number of product categories ranging from food ingredients, vitamins, bio-colorants, solvents, plastics and biofuels. The use of fossil resources is compared with renewable resources as the preferred feedstock for industrial biotechnology. A brief discussion is also given of the expected changes in society and technology, ranging from the shift in the supply of resources, the growing need for efficiency and sustainability of the production systems, changing consumer perception and behaviour and changing agricultural systems and practices. Many of these changes are expected to speed up the transition from a fossil-based to a bio-based economy and society.
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Affiliation(s)
- Wim Soetaert
- Laboratory of Industrial Microbiology and Biocatalysis, Department Biochemical and Microbial technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.
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Mashego MR, Rumbold K, De Mey M, Vandamme E, Soetaert W, Heijnen JJ. Microbial metabolomics: past, present and future methodologies. Biotechnol Lett 2006; 29:1-16. [PMID: 17091378 DOI: 10.1007/s10529-006-9218-0] [Citation(s) in RCA: 228] [Impact Index Per Article: 12.7] [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: 07/06/2006] [Revised: 09/08/2006] [Accepted: 09/21/2006] [Indexed: 10/23/2022]
Abstract
Microbial metabolomics has received much attention in recent years mainly because it supports and complements a wide range of microbial research areas from new drug discovery efforts to metabolic engineering. Broadly, the term metabolomics refers to the comprehensive (qualitative and quantitative) analysis of the complete set of all low molecular weight metabolites present in and around growing cells at a given time during their growth or production cycle. This review focuses on the past, current and future development of various experimental protocols in the rapid developing area of metabolomics in the ongoing quest to reliably quantify microbial metabolites formed under defined physiological conditions. These developments range from rapid sample collection, instant quenching of microbial metabolic activity, extraction of the relevant intracellular metabolites as well as quantification of these metabolites using enzyme based and or modern high tech hyphenated analytical protocols, mainly chromatographic techniques coupled to mass spectrometry (LC-MS(n), GC-MS(n), CE-MS(n)), where n indicates the number of tandem mass spectrometry, and nuclear magnetic resonance spectroscopy (NMR).
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Affiliation(s)
- Mlawule R Mashego
- Department of Biotechnology, Faculty of Applied Sciences, Technical University of Delft, Delft, The Netherlands.
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De Mey M, Lequeux G, Maertens J, De Maeseneire S, Soetaert W, Vandamme E. Comparison of DNA and RNA quantification methods suitable for parameter estimation in metabolic modeling of microorganisms. Anal Biochem 2006; 353:198-203. [PMID: 16545766 DOI: 10.1016/j.ab.2006.02.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [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: 01/13/2006] [Revised: 02/06/2006] [Accepted: 02/07/2006] [Indexed: 11/27/2022]
Abstract
Recent developments in cellular and molecular biology require the accurate quantification of DNA and RNA in large numbers of samples at a sensitivity that enables determination on small quantities. In this study, five current methods for nucleic acid quantification were compared: (i) UV absorbance spectroscopy at 260 nm, (ii) colorimetric reaction with orcinol reagent, (iii) colorimetric reaction based on diphenylamine, (iv) fluorescence detection with Hoechst 33258 reagent, and (v) fluorescence detection with thiazole orange reagent. Genomic DNA of three different microbial species (with widely different G+C content) was used, as were two different types of yeast RNA and a mixture of equal quantities of DNA and RNA. We can conclude that for nucleic acid quantification, a standard curve with DNA of the microbial strain under study is the best reference. Fluorescence detection with Hoechst 33258 reagent is a sensitive and precise method for DNA quantification if the G+C content is less than 50%. In addition, this method allows quantification of very low levels of DNA (nanogram scale). Moreover, the samples can be crude cell extracts. Also, UV absorbance at 260 nm and fluorescence detection with thiazole orange reagent are sensitive methods for nucleic acid detection, but only if purified nucleic acids need to be measured.
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MESH Headings
- Colorimetry/methods
- Coloring Agents/chemistry
- Coloring Agents/metabolism
- DNA, Bacterial/analysis
- DNA, Bacterial/chemistry
- DNA, Fungal/analysis
- DNA, Fungal/chemistry
- Fluorescent Dyes/chemistry
- Fluorescent Dyes/metabolism
- Models, Biological
- RNA, Bacterial/analysis
- RNA, Bacterial/chemistry
- RNA, Fungal/analysis
- RNA, Fungal/chemistry
- Sensitivity and Specificity
- Spectrometry, Fluorescence/methods
- Spectrophotometry/methods
- Spectrophotometry, Ultraviolet/methods
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Affiliation(s)
- Marjan De Mey
- Laboratory of Industrial Microbiology and Biocatalysis, Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium
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Abstract
As a halotolerant bacterial species, Brevibacterium epidermis DSM 20659 can grow at relatively high salinity, tolerating up to 2 M NaCl. It synthesizes ectoine and the intracellular content increases with the medium salinity, with a maximum of 0.14 g ectoine/g CDW at 1 M NaCl. Sugar-stressed cells do not synthesize ectoine. Ectoine synthesis is also affected by the presence of external osmolytes. Added betaine is taken up and completely replaced ectoine, while L-proline is only temporarily accumulated after which ectoine is synthesized. The strain can metabolize ectoine; L-glutamate is a better carbon source for ectoine synthesis than L-aspartate.
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Affiliation(s)
- Annelies Onraedt
- Department of Biochemical and Microbial Technology, Ghent University, Ghent, Belgium
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Onraedt A, Soetaert W, Vandamme E. Industrial importance of the genus Brevibacterium. Biotechnol Lett 2005; 27:527-33. [PMID: 15973485 DOI: 10.1007/s10529-005-2878-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [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: 12/07/2004] [Revised: 02/16/2005] [Accepted: 02/18/2005] [Indexed: 10/25/2022]
Abstract
The genus Brevibacterium has long been difficult for taxonomists to classify due to its close morphological similarity to other genera. Since it was proposed in 1953, the genus has often been redefined. The genus is best known for its important role in the ripening of certain cheeses (B. linens) and for its supposed over-production of L: -amino acids. Other interesting industrial applications, including the production of ectoine, have recently been proposed. The general characteristics, the occurrence and the recent taxonomy of Brevibacterium are reviewed here. Furthermore, known and potential industrial applications for Brevibacterium species are briefly discussed.
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Affiliation(s)
- Annelies Onraedt
- Department of Biochemical and Microbial Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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De Muynck C, Pereira C, Soetaert W, Vandamme E. Production of L-ribulose by dehydrogenation of ribitol with Gluconobacter oxydans. Commun Agric Appl Biol Sci 2005; 70:101-4. [PMID: 16366284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
- C De Muynck
- Department of Biochemical and Microbial Technology, Ghent University, Belgium
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Sablon E, Contreras B, Vandamme E. Antimicrobial peptides of lactic acid bacteria: mode of action, genetics and biosynthesis. Adv Biochem Eng Biotechnol 2001; 68:21-60. [PMID: 11036685 DOI: 10.1007/3-540-45564-7_2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
A survey is given of the main classes of bacteriocins, produced by lactic acid bacteria: I. lantibiotics II. small heat-stable non-lanthionine containing membrane-active peptides and III. large heat-labile proteins. First, their mode of action is detailed, with emphasis on pore formation in the cytoplasmatic membrane. Subsequently, the molecular genetics of several classes of bacteriocins are described in detail, with special attention to nisin as the most prominent example of the lantibiotic-class. Of the small non-lanthionine bacteriocin class, the Lactococcus lactococcins, and the Lactobacillus sakacin A and plantaricin A-bacteriocins are discussed. The principles and mechanisms of immunity and resistance towards bacteriocins are also briefly reported. The biosynthesis of bacteriocins is treated in depth with emphasis on response regulation, post-translational modification, secretion and proteolytic activation of bacteriocin precursors. To conclude, the role of the leader peptides is outlined and a conceptual model for bacteriocin maturation is proposed.
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Affiliation(s)
- E Sablon
- Innogenetics N.V., Ghent, Belgium
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Yemmas L, Vandamme E. Two Streptomyces sp. strains able to hydrolyse the Clavibacter exopolymer, clavan. Meded Rijksuniv Gent Fak Landbouwkd Toegep Biol Wet 2001; 66:275-9. [PMID: 15954303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- L Yemmas
- Department of Biochemical and Microbial Technology, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure links 653, 9000 Gent, Belgium
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Vermynck JP, Vandamme E, Revert R, Dubois-Pacque N, Ringot PL, Burnay J, Medelli J, Pietri J. [Systemo-pulmonary fistula associated with stenosis of the brachiocephalic trunk and disclosed by exertional ischemia of the right arm]. Ann Chir 1984; 38:685-90. [PMID: 6395787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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Kenig M, Vandamme E, Abraham EP. The mode of action of bacilysin and anticapsin and biochemical properties of bacilysin-resistant mutants. J Gen Microbiol 1976; 94:46-54. [PMID: 819624 DOI: 10.1099/00221287-94-1-46] [Citation(s) in RCA: 91] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Bacilysin is hydrolysed to L-alanine and anticapsin by suspensions of a bacilysin-sensitive strain of Staphylococcus aureus but not by those of a resistant strain derived from it. In contrast, it is hydrolysed by extracts of both strains. Anticapsin is a powerful inhibitor of glucosamine synthetase in extracts of both the bacilysin-sensitive and -resistant strains of Staph. aureus. Bacilysin, by comparison, is a relatively poor inhibitor of glucosamine synthetase in crude extracts when its hydrolysis is inhibited by EDTA. A phenylalanine auxotroph of Staph. aureus readily uses L-analyl-L-phenylalanine for growth, but a bacilysin-resistant mutant of this strain does not. It is suggested that the antibacterial activity of bacilysin depends on its transport into the organism, its hydrolysis to anticapsin and on inhibition by the latter of glucosamine synthetase, and that bacilysin-resistant mutants are defective in a transport system.
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Vandamme E, Remaut E, van Montagu M, Fiers W. Studies on the bacteriophage MS 2. XVII. Suppressor-sensitive mutants of the A protein cistron. Mol Gen Genet 1972; 117:219-28. [PMID: 5057548 DOI: 10.1007/bf00271649] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Gillis E, Vandamme E, Fiers W. Viral RNA polymerase levels induced in non-permissive "escherichia coli" cells by suppressor-sensitive mutants of bacteriophage MS2. Arch Int Physiol Biochim 1967; 75:556-8. [PMID: 4167735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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