Abstract:
:A highly abundant satellite DNA comprising 17% of the Tribolium castaneum (Insecta, Coleoptera) genome was cloned and sequenced. The satellite monomer is 360 bp long, has a high A+T content of 73%, and lacks significant internal substructures. The sequence variability is 3.6%, essentially due to random distribution of single-point mutations. The satellite is evenly distributed in the regions of centromeric heterochromatin of all 20 chromosomes, as shown by fluorescent in situ hybridization. Comparison of T. castaneum satellite with those from three different but congeneric species reveals the highest sequence similarity of 47.1% with the satellite from the sibling species Tribolium freemani. The phylogenetic relationships among Tribolium species deduced from satellite sequence agree with those based on karyological, chemotaxonomic, and hybridization data. This indicates a parallel in the divergence of satellites and some genetic and cytogenetic characters. Despite low mutual sequence similarity, which makes them species-specific, Tribolium satellites have a common structural characteristic: a block of about 95% A+T content, 20 to 42 bp long, flanked at one side by an inverted repeat which can potentially form a thermodynamically stable dyad structure. Since similar structural features are found in centromeric DNA of Saccharomyces cerevisiae and Chironomus pallidivittatus, their possible importance in centromere function may be inferred.
journal_name
Mol Biol Evoljournal_title
Molecular biology and evolutionauthors
Ugarković D,Podnar M,Plohl Mdoi
10.1093/oxfordjournals.molbev.a025668subject
Has Abstractpub_date
1996-10-01 00:00:00pages
1059-66issue
8eissn
0737-4038issn
1537-1719journal_volume
13pub_type
杂志文章abstract::Phenotypes and behaviors respond to resource constraints via adaptation, but the influence of ecological limitations on the composition of eukaryotic genomes is still unclear. We trace connections between plant ecology and genomes through their elemental composition. Inorganic sources of nitrogen (N) are severely limi...
journal_title:Molecular biology and evolution
pub_type: 信件
doi:10.1093/molbev/msp038
更新日期:2009-05-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msy047
更新日期:2018-06-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a040382
更新日期:1986-03-01 00:00:00
abstract::Sequences of 1,862 chromosomally encoded Escherichia coli K12 proteins were examined to identify genes likely to have arisen by duplication of genes in an ancestral chromosome. The criteria for sequence relatedness were an alignment of at least 100 amino acid residues and a PAM distance (number of accepted point mutat...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a040291
更新日期:1995-11-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/mst222
更新日期:2014-02-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a026081
更新日期:1999-12-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msn056
更新日期:2008-06-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msj070
更新日期:2006-03-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msp054
更新日期:2009-06-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msq010
更新日期:2010-06-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/mst010
更新日期:2013-04-01 00:00:00
abstract::Variation in rates of molecular evolution now appears to be widespread. The demonstration that body size is correlated with rates of molecular evolution suggests that physiological and ecological factors may be involved in molecular rate variation, but large-scale comparative studies are still lacking. Here, we use co...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a025864
更新日期:1998-10-01 00:00:00
abstract::ModelTest-NG is a reimplementation from scratch of jModelTest and ProtTest, two popular tools for selecting the best-fit nucleotide and amino acid substitution models, respectively. ModelTest-NG is one to two orders of magnitude faster than jModelTest and ProtTest but equally accurate and introduces several new featur...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msz189
更新日期:2020-01-01 00:00:00
abstract::Plant phenotypic plasticity describes altered phenotypic performance of an individual when grown in different environments. Exploring genetic architecture underlying plant plasticity variation may help mitigate the detrimental effects of a rapidly changing climate on agriculture, but little research has been done in t...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msaa283
更新日期:2020-11-03 00:00:00
abstract::The Environment for Tree Exploration (ETE) is a computational framework that simplifies the reconstruction, analysis, and visualization of phylogenetic trees and multiple sequence alignments. Here, we present ETE v3, featuring numerous improvements in the underlying library of methods, and providing a novel set of sta...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msw046
更新日期:2016-06-01 00:00:00
abstract::The similarity of certain reported angiosperm rDNA internal transcribed spacer (ITS) region sequences to those of green algae prompted our analysis of the deep-level phylogenetic signal in the highly conserved but short 5.8S and hypervariable ITS2 sequences. We found that 5.8S sequences yield phylogenetic trees simila...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a025693
更新日期:1996-11-01 00:00:00
abstract::Since the endosymbiotic origin of chloroplasts from cyanobacteria 2 billion years ago, the evolution of plastids has been characterized by massive loss of genes. Most plants and algae depend on photosynthesis for energy and have retained ∼110 genes in their chloroplast genome that encode components of the gene express...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msr028
更新日期:2011-07-01 00:00:00
abstract::The shikimate dehydrogenases (SDH) represent a widely distributed enzyme family with an essential role in secondary metabolism. This superfamily had been previously subdivided into 4 enzyme groups (AroE, YdiB, SdhL, and RifI), which show clear biochemical and functional differences ranging from amino acid biosynthesis...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msn170
更新日期:2008-10-01 00:00:00
abstract::In chickens, there is a single functional gene (VH1) coding for the heavy chain variable region of immunoglobulins, and immunoglobulin diversity is generated by gene conversion of the VH1 gene by many variable region pseudogenes (psi VH's) that exist on the 5' side of the VH1 gene. To understand the evolution of this ...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a040194
更新日期:1995-01-01 00:00:00
abstract::Genome and transcript sequences are composed of long strings of nucleotide monomers (A, C, G, and T/U) that require different quantities of nitrogen atoms for biosynthesis. Here, it is shown that the strength of selection acting on transcript nitrogen content is influenced by the amount of nitrogen plants require to c...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msy043
更新日期:2018-07-01 00:00:00
abstract::Most mitochondrial proteins are synthesized in the cytosol of eukaryotic cells as precursor proteins carrying N-terminal extensions called transit peptides or presequences, which mediate their specific transport into mitochondria. However, plant cells possess a second potential target organelle for such transit peptid...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msp087
更新日期:2009-08-01 00:00:00
abstract::Light-dependent and dark-operative protochlorophyllide oxidoreductases (LPORs and DPORs) are evolutionary and structurally distinct enzymes that are essential for the synthesis of (bacterio)chlorophyll, the primary pigment needed for both anoxygenic and oxygenic photosynthesis. In contrast to the long-held hypothesis ...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msaa234
更新日期:2020-09-15 00:00:00
abstract::The heat shock protein (Hsp) sequences, because of their ubiquity and high degree of conservation, provide useful models for phylogenetic analysis. In this paper I have carried out a global alignment of all available sequences (a total of 31) for the 90-kD heat shock protein (Hsp90) family. The minimum amino acid iden...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/oxfordjournals.molbev.a040281
更新日期:1995-11-01 00:00:00
abstract::Here, we present a study of the molecular evolution of the pheromone receptor genes (pre-1 and pre-2) in Neurospora taxa with different mating systems. We focus on comparisons between heterothallic and homothallic taxa, reproducing sexually by outcrossing and by intrahaploid selfing, respectively. Our general aim was ...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/mss193
更新日期:2012-12-01 00:00:00
abstract::There is increasing evidence that dosage compensation is not a ubiquitous feature following sex chromosome evolution, especially not in organisms where females are the heterogametic sex, like in birds. Even when it occurs, compensation can be incomplete and limited to dosage-sensitive genes. However, previous work has...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msv147
更新日期:2015-10-01 00:00:00
abstract::Serum response factor (SRF) and myocyte enhancer factor 2 (MEF2) represent two types of members of the MCM1, AGAMOUS, DEFICIENS, and SRF (MADS)-box transcription factor family present in animals and fungi. Each type has distinct biological functions, which are reflected by the distinct specificities of the proteins bo...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msq214
更新日期:2011-01-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/mst070
更新日期:2013-07-01 00:00:00
abstract::Mitochondrial genomes of metazoans, given their elevated rates of evolution, have served as pivotal markers for phylogeographic studies and recent phylogenetic events. In order to determine the dynamics of spontaneous mitochondrial mutations in small populations in the absence and presence of selection, we evolved mut...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
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更新日期:2017-06-01 00:00:00
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journal_title:Molecular biology and evolution
pub_type: 杂志文章
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更新日期:2011-02-01 00:00:00
abstract::Enzyme function is strongly affected by temperature, and orthologs from species adapted to different thermal environments often show temperature compensation in kinetic properties. Antarctic notothenioid fishes live in a habitat of constant, extreme cold (-1.86 +/- 2 degrees C), and orthologs of the enzyme A4-lactate ...
journal_title:Molecular biology and evolution
pub_type: 杂志文章
doi:10.1093/molbev/msh237
更新日期:2004-12-01 00:00:00