共查询到20条相似文献,搜索用时 15 毫秒
1.
Activation of the beta globin locus by transcription factors and chromatin modifiers 总被引:1,自引:0,他引:1
下载免费PDF全文
![点击此处可从《The EMBO journal》网站下载免费的PDF全文](/ch/ext_images/free.gif)
McMorrow T van den Wijngaard A Wollenschlaeger A van de Corput M Monkhorst K Trimborn T Fraser P van Lohuizen M Jenuwein T Djabali M Philipsen S Grosveld F Milot E 《The EMBO journal》2000,19(18):4986-4996
2.
Background
Blocks of duplicated genomic DNA sequence longer than 1000 base pairs are known as low copy repeats (LCRs). Identified by their sequence similarity, LCRs are abundant in the human genome, and are interesting because they may represent recent adaptive events, or potential future adaptive opportunities within the human lineage. Sequence analysis tools are needed, however, to decide whether these interpretations are likely, whether a particular set of LCRs represents nearly neutral drift creating junk DNA, or whether the appearance of LCRs reflects assembly error. Here we investigate an LCR family containing the sulfotransferase (SULT) 1A genes involved in drug metabolism, cancer, hormone regulation, and neurotransmitter biology as a first step for defining the problems that those tools must manage. 相似文献3.
Smads and chromatin modulation 总被引:2,自引:0,他引:2
van Grunsven LA Verstappen G Huylebroeck D Verschueren K 《Cytokine & growth factor reviews》2005,16(4-5):495-512
4.
5.
6.
Isolation of unique STAT5 targets by chromatin immunoprecipitation-based gene identification 总被引:1,自引:0,他引:1
Nelson EA Walker SR Alvarez JV Frank DA 《The Journal of biological chemistry》2004,279(52):54724-54730
7.
8.
9.
10.
11.
12.
Alain Coletta John W Pinney David Y Weiss Solís James Marsh Steve R Pettifer Teresa K Attwood 《BMC systems biology》2010,4(1):43
Background
Regions of protein sequences with biased amino acid composition (so-called Low-Complexity Regions (LCRs)) are abundant in the protein universe. A number of studies have revealed that i) these regions show significant divergence across protein families; ii) the genetic mechanisms from which they arise lends them remarkable degrees of compositional plasticity. They have therefore proved difficult to compare using conventional sequence analysis techniques, and functions remain to be elucidated for most of them. Here we undertake a systematic investigation of LCRs in order to explore their possible functional significance, placed in the particular context of Protein-Protein Interaction (PPI) networks and Gene Ontology (GO)-term analysis. 相似文献13.
14.
15.
Denis Filisetti Anne Théobald-Dietrich Nassira Mahmoudi Jo?lle Rudinger-Thirion Ermanno Candolfi Magali Frugier 《The Journal of biological chemistry》2013,288(51):36361-36371
Genome sequencing revealed an extreme AT-rich genome and a profusion of asparagine repeats associated with low complexity regions (LCRs) in proteins of the malarial parasite Plasmodium falciparum. Despite their abundance, the function of these LCRs remains unclear. Because they occur in almost all families of plasmodial proteins, the occurrence of LCRs cannot be associated with any specific metabolic pathway; yet their accumulation must have given selective advantages to the parasite. Translation of these asparagine-rich LCRs demands extraordinarily high amounts of asparaginylated tRNAAsn. However, unlike other organisms, Plasmodium codon bias is not correlated to tRNA gene copy number. Here, we studied tRNAAsn accumulation as well as the catalytic capacities of the asparaginyl-tRNA synthetase of the parasite in vitro. We observed that asparaginylation in this parasite can be considered standard, which is expected to limit the availability of asparaginylated tRNAAsn in the cell and, in turn, slow down the ribosomal translation rate when decoding asparagine repeats. This observation strengthens our earlier hypothesis considering that asparagine rich sequences act as “tRNA sponges” and help cotranslational folding of parasite proteins. However, it also raises many questions about the mechanistic aspects of the synthesis of asparagine repeats and about their implications in the global control of protein expression throughout Plasmodium life cycle. 相似文献
16.
17.
18.
19.