Results 11 to 20 of about 108,982 (307)

Catabolite repression of enzyme synthesis does not prevent sporulation [PDF]

open access: yesJournal of Bacteriology, 1980
In the presence of excess glucose, a decrease of guanine nucleotides in Bacillus subtilis initiated sporulation but did not prevent catabolite repression of three enzymes. Therefore, the ultimate mechanism(s) repressing enzyme synthesis differs from that suppressing sporulation.
J M, Lopez, B, Uratani-Wong, E, Freese
openaire   +2 more sources

Normal transcription of cellulolytic enzyme genes relies on the balance between the methylation of H3K36 and H3K4 in Penicillium oxalicum

open access: yesBiotechnology for Biofuels, 2019
Background Enzymatic hydrolysis of lignocellulose by fungi is a key step in global carbon cycle and biomass utilization. Cellulolytic enzyme production is tightly controlled at a transcriptional level. Here, we investigated the roles of different histone
Yanan Li   +8 more
doaj   +1 more source

Degradation of YRA1 Pre-mRNA in the cytoplasm requires translational repression, multiple modular intronic elements, Edc3p, and Mex67p. [PDF]

open access: yesPLoS Biology, 2010
Intron-containing pre-mRNAs are normally retained and processed in the nucleus but are sometimes exported to the cytoplasm and degraded by the nonsense-mediated mRNA decay (NMD) pathway as a consequence of their inclusion of intronic in-frame termination
Shuyun Dong, Allan Jacobson, Feng He
doaj   +1 more source

Targets for the MalI repressor at the divergent Escherichia coliK-12malX-malI promoters [PDF]

open access: yes, 2010
Random mutagenesis has been used to identify the target DNA sites for the MalI repressor at the divergent Escherichia coli K-12 malX-malI promoters. The malX promoter is repressed by MalI binding to a DNA site located from position -24 to position -9 ...
Barnard   +22 more
core   +1 more source

Xylanase production by a thermo-tolerant Bacillus species under solid-state and submerged fermentation

open access: yesBrazilian Archives of Biology and Technology, 2009
Effects of xylose on xylanase production by a thermophilic Bacillus sp showed diverse patterns on corn cob (CC) and wheat bran (WB) as sole carbon sources in solid- state fermentation (SSF) and submerged fermentation (SmF). Supplementation of these media
Uma Gupta, Rita Kar
doaj   +1 more source

DNA compaction by the higher-order assembly of PRH/Hex homeodomain protein oligomers [PDF]

open access: yes, 2010
Protein self-organization is essential for the establishment and maintenance of nuclear architecture and for the regulation of gene expression. We have shown previously that the Proline-Rich Homeodomain protein (PRH/Hex) self-assembles to form oligomeric
A. Sawasdichai   +41 more
core   +6 more sources

Polycomb represses a gene network controlling puberty via modulation of histone demethylase Kdm6b expression

open access: yesScientific Reports, 2021
Female puberty is subject to Polycomb Group (PcG)-dependent transcriptional repression. Kiss1, a puberty-activating gene, is a key target of this silencing mechanism.
Hollis Wright   +4 more
doaj   +1 more source

From meadows to milk to mucosa – adaptation of Streptococcus and Lactococcus species to their nutritional environments [PDF]

open access: yes, 2011
Lactic acid bacteria (LAB) are indigenous to food-related habitats as well as associated with the mucosal surfaces of animals. The LAB family Streptococcaceae consists of the genera Lactococcus and Streptococcus.
Adab, P.   +12 more
core   +8 more sources

Transforming Growth Factor β/Activin Signaling Functions as a Sugar-Sensing Feedback Loop to Regulate Digestive Enzyme Expression

open access: yesCell Reports, 2014
Summary: Organisms need to assess their nutritional state and adapt their digestive capacity to the demands for various nutrients. Modulation of digestive enzyme production represents a rational step to regulate nutriment uptake.
Wen-bin Alfred Chng   +3 more
doaj   +1 more source

The Yeast Capping Enzyme Represses RNA Polymerase II Transcription [PDF]

open access: yesMolecular Cell, 2002
Using a highly pure transcription system derived from Saccharomyces cerevisiae, we have purified an activity in yeast whole-cell extracts that represses RNA polymerase II transcription. Mechanistic studies suggest that this repressor specifically targets transcriptional reinitiation.
Myers, Lawrence C.   +3 more
openaire   +2 more sources

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