Journal of Molecular Evolution
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Frequencies of synonymous substitutions in mammals are gene-specific and correlated with frequencies of nonsynonymous substitutions
Journal of Molecular Evolution - Tập 40 - Trang 107-113 - 1995
The frequencies of synonymous substitutions of mammalian genes cover a much wider range than previously thought. We report here that the different frequencies found in homologous genes from a given mammalian pair are correlated with those in the same homologous genes from a different mammalian pair. This indicates that the frequencies of synonymous substitutions are gene-specific (as are the frequ......
Origin of organic compounds on the primitive earth and in meteorites
Journal of Molecular Evolution - Tập 9 - Trang 59-72 - 1976
The role and relative contributions of different forms of energy to the synthesis of amino acids and other organic compounds on the primitive earth, in the parent bodies or carbonaceous chondrites, and in the solar nebula are examined. A single source of energy or a single process would not account for all the organic compounds synthesized in the solar system. Electric discharges appear to produce......
Oscheius tipulae as an Example of eEF1A Gene Diversity in Nematodes
Journal of Molecular Evolution - Tập 67 - Trang 278-290 - 2008
We characterized four eEF1A genes in the alternative rhabditid nematode model organism Oscheius tipulae. This is twice the copy number of eEF1A genes in C. elegans, C. briggsae, and, probably, many other free-living and parasitic nematodes. The introns show features remarkably different from those of other metazoan eEF1A genes. Most of the introns in the eEF1A genes are specific to O. tipulae and ......
Newly Discovered AqE Gene is Highly Conserved in Non-tetrapod Vertebrates
Journal of Molecular Evolution - Tập 89 - Trang 214-224 - 2021
Studying the diversity of energy production pathways is important for understanding the evolutionary relationships between metabolic pathways and their biochemical precursors. The lactate/malate dehydrogenase (LDH/MDH) superfamily has been a model system for structural and functional evolution for a long time. Recently, the type-2 family of LDH/MDH (or LDH2/MDH2 oxidoreductase) has been identified......
Mosaic evolution of rodent B1 elements
Journal of Molecular Evolution - Tập 42 - Trang 66-72 - 1996
We have determined sequences of PCR-amplified B 1 elements from hamster and rat (Myomorpha), chipmunk (Sciuromorpha), and guinea pig (Caviomorpha). Between three and six B 1 subfamilies were found in these species. In the phylogenetic analysis Bl sequences of hamster, mouse, and rat clustered separately from those of chipmunk and those of guinea pig. This is consistent with an independent evolutio......
General Trends in Selectively Driven Codon Usage Biases in the Domain Archaea
Journal of Molecular Evolution - Tập 79 - Trang 105-110 - 2014
Since the advent of rapid techniques for sequencing DNA in the mid 70’s, it became clear that all codons coding for the same amino acid are not used according to neutral expectations. In the last 30 years, several theories were proposed for explaining this fact. However, the most important concepts were the result of analyses carried out in Bacteria, and unicellular and multicellular eukaryotes li......
Catalysis of peptide bond formation by histidyl-histidine in a fluctuating clay environment
Journal of Molecular Evolution - Tập 16 - Trang 279-290 - 1980
The condensation of glycine to form oligoglycines during wet-dry fluctuations on clay surfaces was enhanced up to threefold or greater by small amounts of histidyl-histidine. In addition, higher relative yields of the longer oligomers were produced. Other specific dipeptides tested gave no enhancement, and imidazole, histidine, and N-acetylhistidine gave only slight enhancements. Histidyl-histidin......
Recently published papers in the field of molecular evolution
Journal of Molecular Evolution - Tập 6 - Trang XXIII-XXX - 1975
Molecular Phylogenetic Inference of the Woolly Mammoth Mammuthus primigenius, Based on Complete Sequences of Mitochondrial Cytochrome b and 12S Ribosomal RNA Genes
Journal of Molecular Evolution - Tập 46 - Trang 314-326 - 1998
Complete sequences of cytochrome b (1,137 bases) and 12S ribosomal RNA (961 bases) genes in mitochondrial DNA were successfully determined from the woolly mammoth (Mammuthus primigenius), African elephant (Loxodonta africana), and Asian elephant (Elephas maximus). From these sequence data, phylogenetic relationships among three genera were examined. Molecular phylogenetic trees reconstructed by t......
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