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Pronk, M. (author)
Discharging untreated wastewater will contaminate the surface waters and can lead to spread of diseases and long term ecological damage. The most common method for treatment is by the activated sludge process. In this process, nutrients like nitrogen, phosphorus and COD are removed by bacteria grown in flocs. These bacterial flocs are separated...
doctoral thesis 2016
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Papapetridis, I. (author), van Dijk, M. (author), Dobbe, Arthur P A (author), Metz, B. (author), Pronk, J.T. (author), van Maris, A.J.A. (author)
Background: Acetic acid, an inhibitor of sugar fermentation by yeast, is invariably present in lignocellulosic hydrolysates which are used or considered as feedstocks for yeast-based bioethanol production. Saccharomyces cerevisiae strains have been constructed, in which anaerobic reduction of acetic acid to ethanol replaces glycerol formation...
journal article 2016
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Milne, N.S.W. (author), Wahl, S.A. (author), Van Maris, A.J.A. (author), Pronk, J.T. (author), Daran, J.M. (author)
It is theoretically possible to engineer Saccharomyces cerevisiae strains in which isobutanol is the predominant catabolic product and high-yielding isobutanol-producing strains are already reported by industry. Conversely, isobutanol yields of engineered S. cerevisiae strains reported in the scientific literature typically remain far below 10%...
journal article 2016
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Kozak, B.U. (author), van Rossum, Harmen M. (author), Niemeijer, M.S. (author), van Dijk, M. (author), Benjamin, Kirsten (author), Wu, Liang (author), Daran, J.G. (author), Pronk, J.T. (author), van Maris, A.J.A. (author)
In Saccharomyces cerevisiae ethanol dissimilation is initiated by its oxidation and activation to cytosolic acetyl-CoA. The associated consumption of ATP strongly limits yields of biomass and acetyl-CoA-derived products. Here, we explore the implementation of an ATP-independent pathway for acetyl-CoA synthesis from ethanol that, in theory,...
journal article 2016
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van Rossum, Harmen M. (author), Kozak, B.U. (author), Niemeijer, M.S. (author), Dykstra, James C. (author), Luttik, M.A.H. (author), Daran, J.G. (author), van Maris, A.J.A. (author), Pronk, J.T. (author)
In many eukaryotes, the carnitine shuttle plays a key role in intracellular transport of acyl moieties. Fatty acidgrown Saccharomyces cerevisiae cells employ this shuttle to translocate acetyl units into their mitochondria. Mechanistically, the carnitine shuttle should be reversible, but previous studies indicate that carnitine shuttle...
journal article 2016
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Rebnegger, C. (author), Vos, T. (author), Graf, Alexandra B. (author), Valli, Minoska (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author), Mattanovicha, Diethard (author)
The yeast Pichia pastoris is a widely used host for recombinant protein production. Understanding its physiology at extremely low growth rates is a first step in the direction of decoupling product formation from cellular growth and therefore of biotechnological relevance. Retentostat cultivation is an excellent tool for studying microbes at...
journal article 2016
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van Rossum, Harmen M. (author), Kozak, B.U. (author), Pronk, J.T. (author), van Maris, A.J.A. (author)
review 2016
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Lindhoud, S. (author), Dias Ribeiro de Carvalho, V.I. (author), Pronk, J.W. (author), Aubin-Tam, M.E. (author)
Challenges in purification and subsequent functionalization of membrane proteins often complicate their biochemical and biophysical characterization. Purification of membrane proteins generally involves replacing the lipids surrounding the protein with detergent molecules, which can affect protein structure and function. Recently, it was shown...
journal article 2016
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Vos, T. (author), De la Torre Cortes, P. (author), Van Gulik, W.M. (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author)
Introduction: Saccharomyces cerevisiae has become a popular host for production of non-native compounds. The metabolic pathways involved generally require a net input of energy. To maximize the ATP yield on sugar in S. cerevisiae, industrial cultivation is typically performed in aerobic, sugar-limited fed-batch reactors which, due to constraints...
journal article 2015
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Lin, Y. (author), Al-Zuhairy, S. (author), Pronk, M. (author), Van Loosdrecht, M.C.M. (author)
In a prior art reactor set up dense aggregates of microorganisms are formed, typically in or embedded in an extracellular matrix. Such may relate to granules, to sphere like entities having a higher viscosity than water, globules, a biofilm, etc. The dense aggregates comprise extracellular polymeric substances, or biopolymers, in particular...
patent 2015
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Milne, N. (author), Van Maris, A.J.A. (author), Pronk, J.T. (author), Daran, J.M. (author)
Background: Decarboxylation of ?-ketoisovalerate to isobutyraldehyde is a key reaction in metabolic engineering of Saccharomyces cerevisiae for isobutanol production with published studies relying on overexpression of either the native ARO10 gene or of the Lactococcus lactis kivD decarboxylase gene resulting in low enzymatic activities. Here, we...
journal article 2015
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Daran, J.G. (author), Pronk, J.T. (author), Romagnoli, G. (author)
The invention relates to a nucleic acid molecule encoding a novel selection marker. Said marker is a guanidinobutyrase from Kluyveromyces lactis, which, when expressed in Saccharomyces, allows the growth of the yeast in the presence of guanidinobutyrate as the sole nitrogen source. Said marker can be used in a method for producing a...
patent 2015
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Van den Broek, M. (author), Bolat, I. (author), Nijkamp, J.F. (author), Ramos, E. (author), Luttik, M.A.H. (author), Koopman, F. (author), Geertman, J.M. (author), De Ridder, D. (author), Pronk, J.T. (author), Daran, J.M. (author)
Lager brewing strains of Saccharomyces pastorianus are natural interspecific hybrids originating from the spontaneous hybridization of Saccharomyces cerevisiae and Saccharomyces eubayanus. Over the past 500 years, S. pastorianus has been domesticated to become one of the most important industrial microorganisms. Production of lager-type beers...
journal article 2015
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Pronk, M.J. (author)
Solutions have been introduced to handle massive point clouds in Database Management Systems (DBMS), namely by Oracle in 2011 and postgreSQL in 2013. Many common operations on these massive point clouds require knowledge about the original surface in order to analyse them. A possible method to recreate a representation of the original surface is...
master thesis 2015
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Pronk, M. (author), Abbas, B. (author), Kleerebezem, R. (author), Van Loosdrecht, M.C.M. (author)
The influence of sludge age on granular sludge formation and microbial population dynamics in a methanol- and acetate-fed aerobic granular sludge system operated at 35°C was investigated. During anaerobic feeding of the reactor, methanol was initially converted to methane by methylotrophic methanogens. These methanogens were able to withstand...
journal article 2015
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Ercan, O. (author), Bisschops, M.M. (author), Overkamp, W. (author), Jørgensen, T.R. (author), Rama, A.F. (author), Smid, E.J. (author), Pronk, J.T. (author), Kuipers, O.P. (author), Daran-Lapujade, P. (author), Kleerebezem, M. (author)
The current knowledge of the physiology and gene expression of industrially relevant microorganisms is largely based on laboratory studies under conditions of rapid growth and high metabolic activity. However, in natural ecosystems and industrial processes, microbes frequently encounter severe calorie restriction. As a consequence, microbial...
journal article 2015
document
Van Loosdrecht, M.C.M. (author), Lin, Y. (author), Pronk, M. (author)
The present invention concerns a method of producing linear polysaccharides, bacteria capable of producing such linear polysaccharides, and uses of such linear polysaccharides, as a medicament, in agriculture, in food processing, as a coating, as a thickening agent, as a flocculating agent, and for water processing.
patent 2015
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Milne, N. (author), Luttik, M.A.H. (author), Cueto Rojas, H.F. (author), Wahl, A. (author), Van Maris, A.J.A. (author), Pronk, J.T. (author), Daran, J.G. (author)
In microbial processes for production of proteins, biomass and nitrogen-containing commodity chemicals, ATP requirements for nitrogen assimilation affect product yields on the energy producing substrate. In Saccharomyces cerevisiae, a current host for heterologous protein production and potential platform for production of nitrogen-containing...
journal article 2015
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Solis-Escalante, D. (author), Kuijpers, N.G.A. (author), Barrajon-Simancas, N. (author), Van den Broek, M. (author), Pronk, J.T. (author), Daran, J.M. (author), Daran-Lapujade, P. (author)
As a result of ancestral whole-genome and small-scale duplication events, the genomes of Saccharomyces cerevisiae and many eukaryotes still contain a substantial fraction of duplicated genes. In all investigated organisms, metabolic pathways, and more particularly glycolysis, are specifically enriched for functionally redundant paralogs. In...
journal article 2015
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Mans, R. (author), Van Rossum, H.M. (author), Wijsman, M. (author), Backx, A. (author), Kuijpers, N.G.A. (author), van den Broek, M. (author), Daran-Lapujade, P.A.S. (author), Pronk, J.T. (author), Van Maris, A.J.A. (author), Daran, J.G. (author)
A variety of techniques for strain engineering in Saccharomyces cerevisiae have recently been developed. However, especially when multiple genetic manipulations are required, strain construction is still a time-consuming process. This study describes new CRISPR/Cas9-based approaches for easy, fast strain construction in yeast and explores their...
journal article 2015
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