Abstract:
:Genome-wide transcription start site (TSS) profiles of the enterobacteria Escherichia coli and Klebsiella pneumoniae were experimentally determined through modified 5' RACE followed by deep sequencing of intact primary mRNA. This identified 3,746 and 3,143 TSSs for E. coli and K. pneumoniae, respectively. Experimentally determined TSSs were then used to define promoter regions and 5' UTRs upstream of coding genes. Comparative analysis of these regulatory elements revealed the use of multiple TSSs, identical sequence motifs of promoter and Shine-Dalgarno sequence, reflecting conserved gene expression apparatuses between the two species. In both species, over 70% of primary transcripts were expressed from operons having orthologous genes during exponential growth. However, expressed orthologous genes in E. coli and K. pneumoniae showed a strikingly different organization of upstream regulatory regions with only 20% identical promoters with TSSs in both species. Over 40% of promoters had TSSs identified in only one species, despite conserved promoter sequences existing in the other species. 662 conserved promoters having TSSs in both species resulted in the same number of comparable 5' UTR pairs, and that regulatory element was found to be the most variant region in sequence among promoter, 5' UTR, and ORF. In K. pneumoniae, 48 sRNAs were predicted and 36 of them were expressed during exponential growth. Among them, 34 orthologous sRNAs between two species were analyzed in depth, and the analysis showed that many sRNAs of K. pneumoniae, including pleiotropic sRNAs such as rprA, arcZ, and sgrS, may work in the same way as in E. coli. These results reveal a new dimension of comparative genomics such that a comparison of two genomes needs to be comprehensive over all levels of genome organization.
journal_name
PLoS Genetjournal_title
PLoS geneticsauthors
Kim D,Hong JS,Qiu Y,Nagarajan H,Seo JH,Cho BK,Tsai SF,Palsson BØdoi
10.1371/journal.pgen.1002867subject
Has Abstractpub_date
2012-01-01 00:00:00pages
e1002867issue
8eissn
1553-7390issn
1553-7404pii
PGENETICS-D-12-00109journal_volume
8pub_type
杂志文章相关文献
PLoS Genetics文献大全abstract::Jacob, the protein encoded by the Nsmf gene, is involved in synapto-nuclear signaling and docks an N-Methyl-D-Aspartate receptor (NMDAR)-derived signalosome to nuclear target sites like the transcription factor cAMP-response-element-binding protein (CREB). Several reports indicate that mutations in NSMF are related to...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005907
更新日期:2016-03-15 00:00:00
abstract::A critical problem in biology is understanding how cells choose between self-renewal and differentiation. To generate a comprehensive view of the mechanisms controlling early hematopoietic precursor self-renewal and differentiation, we used systems-based approaches and murine EML multipotential hematopoietic precursor...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002565
更新日期:2012-01-01 00:00:00
abstract::Chemosensory pheromonal information regulates aggression and reproduction in many species, but how pheromonal signals are transduced to reliably produce behavior is not well understood. Here we demonstrate that the pheromonal signals detected by Gr32a-expressing chemosensory neurons to enhance male aggression are filt...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004356
更新日期:2014-05-22 00:00:00
abstract::Endoplasmic reticulum (ER) stress activates the Unfolded Protein Response, a compensatory signaling response that is mediated by the IRE-1, PERK/PEK-1, and ATF-6 pathways in metazoans. Genetic studies have implicated roles for UPR signaling in animal development and disease, but the function of the UPR under physiolog...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002391
更新日期:2011-11-01 00:00:00
abstract::Massively parallel pyrosequencing of hypervariable regions from small subunit ribosomal RNA (SSU rRNA) genes can sample a microbial community two or three orders of magnitude more deeply per dollar and per hour than capillary sequencing of full-length SSU rRNA. As with full-length rRNA surveys, each sequence read is a...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000255
更新日期:2008-11-01 00:00:00
abstract::Structural features of genomes, including the three-dimensional arrangement of DNA in the nucleus, are increasingly seen as key contributors to the regulation of gene expression. However, studies on how genome structure and nuclear organisation influence transcription have so far been limited to a handful of model spe...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1007467
更新日期:2018-10-24 00:00:00
abstract::During transcription, the nascent pre-mRNA undergoes a series of processing steps before being exported to the cytoplasm. The 3'-end processing machinery involves different proteins, this function being crucial to cell growth and viability in eukaryotes. Here, we found that the rna14-1, rna15-1, and hrp1-5 alleles of ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004203
更新日期:2014-03-06 00:00:00
abstract::Detailed information about stage-specific changes in gene expression is crucial for the understanding of the gene regulatory networks underlying development. Here, we describe the global gene expression dynamics during early flower development, a key process in the life cycle of a plant, during which floral patterning...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.0020117.eor
更新日期:2006-07-01 00:00:00
abstract::Meiosis is a specialized cell division used by diploid organisms to form haploid gametes for sexual reproduction. Central to this reductive division is repair of endogenous DNA double-strand breaks (DSBs) induced by the meiosis-specific enzyme Spo11. These DSBs are repaired in a process called homologous recombination...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003898
更新日期:2013-11-01 00:00:00
abstract::Neuronal cargos are differentially targeted to either axons or dendrites, and this polarized cargo targeting critically depends on the interaction between microtubules and molecular motors. From a forward mutagenesis screen, we identified a gain-of-function mutation in the C. elegans α-tubulin gene mec-12 that trigger...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004715
更新日期:2014-11-13 00:00:00
abstract::Dermal hyperpigmentation or Fibromelanosis (FM) is one of the few examples of skin pigmentation phenotypes in the chicken, where most other pigmentation variants influence feather color and patterning. The Silkie chicken is the most widespread and well-studied breed displaying this phenotype. The presence of the domin...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002412
更新日期:2011-12-01 00:00:00
abstract::The Drosophila testis is a well-established system for studying stem cell self-renewal and competition. In this tissue, the niche supports two stem cell populations, germ line stem cells (GSCs), which give rise to sperm, and somatic stem cells called cyst stem cells (CySCs), which support GSCs and their descendants. I...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005815
更新日期:2016-01-25 00:00:00
abstract::Human chromosome 15q25 is involved in several disease-associated structural rearrangements, including microdeletions and chromosomal markers with inverted duplications. Using comparative fluorescence in situ hybridization, strand-sequencing, single-molecule, real-time sequencing and Bionano optical mapping analyses, w...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008075
更新日期:2019-03-27 00:00:00
abstract::Although multiple environmental cues regulate the transition to flowering in Arabidopsis thaliana, previous studies have suggested that wild A. thaliana accessions fall primarily into two classes, distinguished by their requirement for vernalization (extended winter-like temperatures), which enables rapid flowering un...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.0010006
更新日期:2005-07-01 00:00:00
abstract::Genome-wide association studies (GWAS) have become increasingly common due to advances in technology and have permitted the identification of differences in single nucleotide polymorphism (SNP) alleles that are associated with diseases. However, while typical GWAS analysis techniques treat markers individually, comple...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002101
更新日期:2011-06-01 00:00:00
abstract::Genome integrity depends on correct chromosome segregation, which in turn relies on cohesion between sister chromatids from S phase until anaphase. S phase cohesion, together with DNA double-strand break (DSB) recruitment of cohesin and formation of damage-induced (DI) cohesion, has previously been shown to be require...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003158
更新日期:2013-01-01 00:00:00
abstract::Abeta peptide accumulation is thought to be the primary event in the pathogenesis of Alzheimer's disease (AD), with downstream neurotoxic effects including the hyperphosphorylation of tau protein. Glycogen synthase kinase-3 (GSK-3) is increasingly implicated as playing a pivotal role in this amyloid cascade. We have d...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1001087
更新日期:2010-09-02 00:00:00
abstract::People who begin daily smoking at an early age are at greater risk of long-term nicotine addiction. We tested the hypothesis that associations between nicotinic acetylcholine receptor (nAChR) genetic variants and nicotine dependence assessed in adulthood will be stronger among smokers who began daily nicotine exposure...
journal_title:PLoS genetics
pub_type: 杂志文章,随机对照试验
doi:10.1371/journal.pgen.1000125
更新日期:2008-07-11 00:00:00
abstract::Zinc is an essential trace element involved in a wide range of biological processes and human diseases. Zinc excess is deleterious, and animals require mechanisms to protect against zinc toxicity. To identify genes that modulate zinc tolerance, we performed a forward genetic screen for Caenorhabditis elegans mutants t...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1002013
更新日期:2011-03-01 00:00:00
abstract::Homology-dependent repair of DNA double-strand breaks (DSBs) by gene conversion involves short tracts of DNA synthesis and limited loss of heterozygosity (LOH). For DSBs that present only one end, repair occurs by invasion into a homologous sequence followed by replication to the end of the chromosome resulting in ext...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1001007
更新日期:2010-07-08 00:00:00
abstract::We carried out an admixture analysis of a sample comprising 1,019 individuals from all the provinces of Cuba. We used a panel of 128 autosomal Ancestry Informative Markers (AIMs) to estimate the admixture proportions. We also characterized a number of haplogroup diagnostic markers in the mtDNA and Y-chromosome in orde...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004488
更新日期:2014-07-24 00:00:00
abstract::In order to study the role played by cellular RNA pools produced by homologous genomic loci in defining the transcriptional state of a silenced gene, we tested the effect of non-functional alleles of the white gene in the presence of a functional copy of white, silenced by heterochromatin. We found that non-functional...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005444
更新日期:2015-08-20 00:00:00
abstract::Nanophthalmos is a rare, potentially devastating eye condition characterized by small eyes with relatively normal anatomy, a high hyperopic refractive error, and frequent association with angle closure glaucoma and vision loss. The condition constitutes the extreme of hyperopia or farsightedness, a common refractive e...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008130
更新日期:2019-05-02 00:00:00
abstract::Beckwith-Wiedemann syndrome (BWS) is a fetal overgrowth and human imprinting disorder resulting from the deregulation of a number of genes, including IGF2 and CDKN1C, in the imprinted gene cluster on chromosome 11p15.5. Most cases are sporadic and result from epimutations at either of the two 11p15.5 imprinting centre...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000423
更新日期:2009-03-01 00:00:00
abstract::The deluge of data generated by genome sequencing has led to an increasing reliance on bioinformatic predictions, since the traditional experimental approach of characterizing gene function one at a time cannot possibly keep pace with the sequence-based discovery of novel genes. We have utilized Biolog phenotype Micro...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1000211
更新日期:2008-10-03 00:00:00
abstract::Auxin is a major developmental regulator in plants and the acquisition of a transcriptional response to auxin likely contributed to developmental innovations at the time of water-to-land transition. Auxin Response Factors (ARFs) Transcription Factors (TFs) that mediate auxin-dependent transcriptional changes are divid...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008400
更新日期:2019-09-25 00:00:00
abstract::Glucose is a major energy source and is a key regulator of metabolism but excessive dietary glucose is linked to several disorders including type 2 diabetes, obesity and cardiac dysfunction. Dietary intake greatly influences organismal survival but whether the effects of nutritional status are transmitted to the offsp...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1004346
更新日期:2014-05-01 00:00:00
abstract::The human pathogens N. gonorrhoeae and N. meningitidis display robust intra- and interstrain glycan diversity associated with their O-linked protein glycosylation (pgl) systems. In an effort to better understand the evolution and function of protein glycosylation operating there, we aimed to determine if other human-r...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1008532
更新日期:2019-12-23 00:00:00
abstract::Considerable evidence now supports the idea that the moderate telomere lengthening produced by recombinational telomere elongation (RTE) in a Kluyveromyces lactis telomerase deletion mutant occurs through a roll-and-spread mechanism. However, it is unclear whether this mechanism can account for other forms of RTE that...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1003017
更新日期:2012-01-01 00:00:00
abstract::Cellular toxicity introduced by protein misfolding threatens cell fitness and viability. Failure to eliminate these polypeptides is associated with various aggregation diseases. In eukaryotes, the ubiquitin proteasome system (UPS) plays a vital role in protein quality control (PQC), by selectively targeting misfolded ...
journal_title:PLoS genetics
pub_type: 杂志文章
doi:10.1371/journal.pgen.1005178
更新日期:2015-04-28 00:00:00