Results 11 to 20 of about 108,982 (307)
Catabolite repression of enzyme synthesis does not prevent sporulation [PDF]
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
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]
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
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Targets for the MalI repressor at the divergent Escherichia coliK-12malX-malI promoters [PDF]
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
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]
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
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]
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
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]
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

