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Pichia angusta cells glucose- vs methanol-grown

ABSTRACT: Transcriptional profiling of Pichia angusta NCYC 495 leu1.1 cells growing exponentially on mineral medium containing 0.5% glucose versus a shift for 2 hours to mineral medium containing 0.5% methanol.

ORGANISM(S): Ogataea polymorpha NCYC 495 leu1.1

PROVIDER: GSE19036 | GEO | 2009/11/17

SECONDARY ACCESSION(S): PRJNA120641

REPOSITORIES: GEO

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Pichia angusta cells glucose- vs methanol-grown

Project description:Transcriptional profiling of Pichia angusta NCYC 495 leu1.1 cells growing exponentially on mineral medium containing 0.5% glucose versus a shift for 2 hours to mineral medium containing 0.5% methanol. Two-conditions experiment, 4 individual glucose-grown cultures were shifted at OD660nm 2.3 to fresh mineral medium OD 0.2 containing 0.5% methanol for 2 hours. Transcriptional profiling was performed using total RNA from the glucose-grown cells at the moment of the shift versus cells adapted to methanol for 2 hours.

2010-06-19 | E-GEOD-19036 | biostudies-arrayexpress

Pichia pastoris Glucose/Methanol comparison

2015-08-31 | GSE67690 | GEO

Pichia pastoris Glucose/Methanol comparison

Project description:Comparison of transcription profile of Pichia pastoris cells grown on Glucose medium with Pichia pastoris cells grown on Methanol/Glycerol medium, the fermentations were done in a chemostat. 2 color experiment in reference design. Pichia pastoris reference mix [mixed pool of Pichia pastoris cells sampled from various conditions including cells grown on glycerine, glucose and methanol, on full andminimal medium, in stationary and exponential growth phase, and in different stress states]

2015-08-31 | E-GEOD-67690 | biostudies-arrayexpress

To identify novel targets of Mxr1p in Pichia pastoris cultured in methanol

Project description:Pichia pastoris (Komagataella phaffi) transcription factor Mxr1p is known to regulate multiple metabolic pathways by binding to Mxr1p response elements of target genes. Mxr1p possesses a transactivation domain within the N-terminal 400 amino acids (Mxr1N400) which is functional during methanol metabolism. (Parua et al; 2012) Studies from our lab have shown that delta_mxr1 complemented with Mxr1N400 fails to reverse the growth defect of delta_mxr1 cultured in a medium containing methanol suggesting that region beyond N-terminal 400 amino acids has an essential function. We employed DNA microarray to identify genes whose expression is regulated by Mxr1N400 and full length Mxr1 during methanol metabolism. Pichia pastoris 14-3-3 regulates transcriptional activity of the methanol inducible transcription factor Mxr1 by direct interaction. Pabitra K. Parua, Paul M. Ryan and Elton T. Young. Molecular microbiology, 2012

2021-09-22 | GSE146829 | GEO

To identify novel targets of a histone acetyltransferase Gcn5 in Pichia pastoris

Project description:The regulation of gene expression in Pichia pastoris has so far involved study of transcription factors. However, there are factors other than transcription factors affecting mRNA synthesis such as coactivators, enhancers, and chromatin modifiers. This study is a first ever report on epigenetic regulation in Pichia pastoris where, a histone acetyltransferase is reported to regulate transcription of genes involved in utilization of alternate carbon sources. We employed RNA Seq to identify new targets of Gcn5 in methanol medium.

2022-12-31 | GSE150467 | GEO

To identify novel targets of a histone acetyltransferase Gcn5, and Snf1 kinase complex in Pichia pastoris in YNBM

2022-09-28 | GSE186300 | GEO

Transcription profiling of Pichia pastoris wild type vs recombinant Fab expressing strain with different osmolarities

Project description:Pichia pastoris was grown in carbon limited chemostat cultures on mineral medium with glucose as carbon source. 3 different osmolarities were selected (140, 850, 1400mOsmol kg-1). Samples were taken at steady-state, thus the effect of osmolarity in adapted cells was monitored.

2010-10-26 | E-MEXP-2433 | biostudies-arrayexpress

To identify novel targets of a zinc finger transcription factor, Mxr1p in Pichia pastoris cultured in medium containing ethanol

Project description:The role of transcription factor Mxr1p has so far been studied in methanol, amino acid and acetate metabolism. We have demonstrated a key role of Mxr1p in regulation of ethanol metabolism when cells are cultured in medium containing ethanol as sole carbon source. We employed RNA Seq to identify new targets of Mxr1p in medium containing ethanol.

2021-09-22 | GSE168677 | GEO

Development of a general defined media for Pichia pastoris

Project description:Pichia pastoris is widely used as a host for recombinant protein production. More than 500 proteins have been expressed in the organism at a variety of cultivation scales, from small shake flasks to large bioreactors. Large-scale fermentation strategies typically employ chemically-defined growth media because of its greater batch-to-batch consistency and in many cases, lower cost compared to complex media. For biopharmaceuticals, defined growth media may also simplify downstream purification and regulatory documentation. Standard formulations of defined media for Pichia are minimal ones that lack the metabolic intermediates provided by complex components such as peptone and yeast extract. As a result, growth rates and per-cell productivities are significantly lower than in complex media. We have designed an improved defined media for Pichia pastoris, rich defined medium (RDM), by systematically evaluating nutrients of increasing complexity and identifying those that are most critical for growth. We have also demonstrated the use of RDM for expression of three heterologous proteins, at titers comparable to or higher than in standard complex medium. Rich defined medium has the potential to improve productivity of Pichia pastoris fermentations and accelerate process development for new molecules.

2019-05-22 | GSE99613 | GEO

Pichia pastoris organelles by LC-ESI-MS

Project description:Organelles from Pichia, either grown on glucose or methanol were purified and analysed using LC-ESI-MS. Two biological replicates each had been analyzed leading to four replicate data sets for every organelle. Organelles analyzed: cis golgi, trans golgi, plasma membrane, microsomes, cytosol, vacuole, peroxisomes and mitochondria

2020-05-26 | PXD011220 | Pride

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