The base sequences of the nucleic acids corresponding to ten proteins (aconitase, alcohol dehydrogenase, enolase, fumarase, isocitrate dehydrogenase, lactate dehydrogenase, phosphofructokinase, phosphoglycerate mutase, pyruvate kinase and succinate dehydrogenase) belonging to a total of 154 species, ranging from prokaryotes to vertebrates, were compared with the base sequences of oligoribotides whose growth rates were calculated by a chemical kinetics model. It was shown that oligoribotides grown according to the kinetics model have a fraction of repetitive bases larger than expected from random processes. The base sequences of nucleic acids of prokaryotes and eukaryotes retain, in decreasing proportions, this feature of their abiotic past. Chemically synthesized pentameric stretches with repetitive bases are slightly more abundant than those present in prokaryotes. Genetic drift and natural selection, operating as fundamental laws even for the most primitive living systems, reduced the original, chemically controlled, repetitive base frequency in prokaryotes, which was further reduced for eukaryotes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1515/znc-2008-11-1220 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Interfacial water confers transcription factors with dinucleotide specificity.
Nat Struct Mol Biol
January 2025
Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden.
Transcription factors (TFs) recognize specific bases within their DNA-binding motifs, with each base contributing nearly independently to total binding energy. However, the energetic contributions of particular dinucleotides can deviate strongly from the additive approximation, indicating that some TFs can specifically recognize DNA dinucleotides. Here we solved high-resolution (<1 Å) structures of MYF5 and BARHL2 bound to DNAs containing sets of dinucleotides that have different affinities to the proteins.
View Article and Find Full Text PDFSystematic functional characterization of non-coding regulatory SNPs associated with central obesity.
Am J Hum Genet
January 2025
Key Laboratory of Biomedical Information Engineering of Ministry of Education, Key Laboratory of Biology Multiomics and Diseases in Shaanxi Province Higher Education Institutions, Biomedical Informatics & Genomics Center, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China. Electronic address:
Central obesity is associated with higher risk of developing a wide range of diseases independent of overall obesity. Genome-wide association studies (GWASs) have identified more than 300 susceptibility loci associated with central obesity. However, the functional understanding of these loci is limited by the fact that most loci are in non-coding regions.
View Article and Find Full Text PDFTransposon exonization generates new protein-coding sequences.
Mol Cell
January 2025
State Key Laboratory of Membrane Biology, Beijing Frontier Research Center for Biological Structure, Tsinghua-Peking Joint Center for Life Sciences, School of Basic Medical Sciences, Tsinghua University, Beijing 100084, China. Electronic address:
In a recent issue of Cell, Arribas et al. and Pasquesi et al. explore the phenomenon of transposable element (TE) exonization and its impact on proteomic and immune diversity, highlighting its potential role as a driver of evolutionary innovation.
View Article and Find Full Text PDFChromatin hubs drive key regulatory networks in leukemia.
Mol Cell
January 2025
Department of Biochemistry and Molecular Genetics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA; Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, IL, USA. Electronic address:
In this issue of Molecular Cell, Gambi, Boccalatte, Hernaez, et al. apply multiomics followed by genetic engineering to define then characterize epigenetic hubs that regulate processes crucial for T-ALL and use this insight to offer new avenues for therapeutic targeting.
View Article and Find Full Text PDFInsights into the behaviour of phosphorylated DNA breaks from molecular dynamic simulations.
Comput Biol Chem
December 2024
Faculty of Biochemistry and Molecular Medicine, University of Oulu, PO Box 5400, Oulu 90014, Finland; Biocenter Oulu, University of Oulu, PO Box 5400, Oulu 90014, Finland. Electronic address:
Single-stranded breaks (SSBs) are the most frequent DNA lesions threatening genomic integrity-understanding how DNA sensor proteins recognize certain SSB types is crucial for studies of the DNA repair pathways. During repair of damaged DNA the final SSB that is to be ligated contains a 5'-phosphorylated end. The present work employed molecular simulation (MD) of DNA with a phosphorylated break in solution to address multiple questions regarding the dynamics of the break site.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!