Results 121 to 130 of about 1,124,626 (332)

Small RNA pathways in mammalian oocytes

open access: yesFEBS Open Bio, EarlyView.
Three distinct small RNA pathways operate in mammalian oocytes: RNAi interference (RNAi), the microRNA (miRNA) pathway, and the PIWI‐associated RNA (piRNA) pathway. These pathways use small RNAs to guide sequence‐specific repression and contribute to oocyte biology by targeting genes and mobile elements or appear insignificant since different ...
Petr Svoboda, Josef Pasulka
wiley   +1 more source

Mono-allelic epigenetic regulation of polycistronic transcription initiation by RNA polymerase II in Trypanosoma brucei

open access: yesmBio
Unique for a eukaryote, protein-coding genes in trypanosomes are arranged in polycistronic transcription units (PTUs). This genome arrangement has led to a model where Pol II transcription of PTUs is unregulated and changes in gene expression are ...
Rudo Kieft   +5 more
doaj   +1 more source

Effect of Non-Coding RNA on Post-Transcriptional Gene Silencing of Alzheimer Disease

open access: yes, 2010
A large amount of hidden biological information is contained in the human genome, which is not expressed or revealed in the form of proteins; the usual end product form of gene expression.
Premkumar P   +7 more
core  

Function of the upstream activating factor in chromatin structure organization and transcriptional regulation at the yeast ribosomal DNA

open access: yes, 2010
Chromatin is the template of all processes involved in DNA metabolism in the eukaryotic cell. Accordingly, chromatin is a dynamic structure which changes in its composition and posttranslational modification correlating with the functional state of a ...
Götze, Hannah
core   +1 more source

Hyperosmotic stress‐induced redistribution of pre‐mRNA cleavage factor I subunits is associated with shifts in alternative polyadenylation

open access: yesFEBS Open Bio, EarlyView.
Hyperosmotic stress triggers the relocation of the CFIm complex from the nucleus to the cytoplasm. This shift creates a nuclear ‘stoichiometric bottleneck’, limiting CFIm availability for mRNA processing. Consequently, specific mRNAs like NUDT21 and DICER1 undergo targeted 3′UTR shortening, demonstrating how spatial protein dynamics drive rapid ...
Hitomi Soumiya   +2 more
wiley   +1 more source

Transcriptional regulation of the urokinase receptor (u-PAR) - A central molecule of invasion and metastasis [PDF]

open access: yes, 2003
The phenomenon of tumor-associated proteolysis has been acknowledged as a decisive step in the progression of cancer. This short review focuses on the urokinase receptor (u-PAR), a central molecule involved in tumor-associated invasion and metastasis ...
Fuchs, T., Allgayer, H.
core   +1 more source

Effects of IGFBP4 deficiency on human preadipocyte proliferation and differentiation through the IGF1R/AKT pathway

open access: yesFEBS Open Bio, EarlyView.
IGFBP4 knockdown (KD) impairs preadipocyte proliferation and is associated with IGF1R protein downregulation and attenuated AKT phosphorylation. The mechanisms by which IGFBP4 KD influences the IGF1R/AKT signaling pathway involve newly synthesized proteins and lysosomal degradation pathways. Created in BioRender.
Yujia Guo   +6 more
wiley   +1 more source

Suppression of Methylation-Mediated Transcriptional Gene Silencing by βC1-SAHH Protein Interaction during Geminivirus-Betasatellite Infection

open access: yesPLoS Pathogens, 2011
DNA methylation is a fundamental epigenetic modification that regulates gene expression and represses endogenous transposons and invading DNA viruses. As a counter-defense, the geminiviruses encode proteins that inhibit methylation and transcriptional ...
Xiuling Yang   +7 more
semanticscholar   +1 more source

Investigation of RNA-induced gene silencing in the fission yeast Schizosaccharomyces pombe

open access: yes, 2007
PhDRNA interference (RNAi) is a gene regulating system to which can silence genes at both transcriptional and post-transcriptional levels. In this thesis, a ura4-based RNAi selective assay was developed in the fission yeast Schizosaccharomyces pombe ...
Wang, Huan
core  

Systemic RNAi mediated gene silencing in the anhydrobiotic nematode Panagrolaimus superbus [PDF]

open access: yes, 2008
Background: Gene silencing by RNA interference (RNAi) is a powerful tool for functional genomics. Although RNAi was first described in Caenorhabditis elegans, several nematode species are unable to mount an RNAi response when exposed to exogenous double ...
Jacqueline Boyd   +9 more
core   +1 more source

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