Inclusion of Cetaceans within the order Artiodactyla based on phylogenetic analysis of pancreatic ribonuclease genes
| Autor: | Graziano Pesole, Jaap J. Beintema, Reinhard G. Kleineidam, Heleen J. Breukelman, Ron. A. Kastelein |
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| Přispěvatelé: | Groningen Biomolecular Sciences and Biotechnology |
| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: |
RNase P
Molecular Sequence Data AMINO-ACID-SEQUENCE PROTEIN CYTOCHROME-B MITOCHONDRIAL NUCLEOTIDE SUBSTITUTIONS Molecular evolution Sequence Homology Nucleic Acid evolution Genetics Animals CONTROL REGION Bactrian camel Ribonuclease Amino Acid Sequence Molecular Biology Gene Ecology Evolution Behavior and Systematics Phylogeny DNA Primers Artiodactyla biology Phylogenetic tree Base Sequence Sequence Homology Amino Acid Ribonuclease Pancreatic DNA biology.organism_classification MOLECULAR EVOLUTION Ribonuclease Gene MAMMALS biology.protein Pancreatic ribonuclease Cetacea ribonuclease TISSUE-SPECIFIC EXPRESSION |
| Zdroj: | Journal of Molecular Evolution, 48(3), 360-368. Springer Verlag Scopus-Elsevier |
| ISSN: | 0022-2844 |
| Popis: | Mammalian secretory ribonucleases (RNases 1) form a family of extensively studied homologous proteins that were already used for phylogenetic analyses at the protein sequence level previously. In this paper we report the determination of six ribonuclease gene sequences of Artiodactyla and two of Cetacea. These sequences have been used with ruminant homologues in phylogenetic analyses that supported a group including hippopotamus and toothed whales, a group of ruminant pancreatic and brain-type ribonucleases, and a group of tylopod sequences containing the Arabian camel pancreatic ribonuclease gene and Arabian and Bactrian camel and alpaca RNase 1 genes of unknown function. In all analyses the pig was the first diverging artiodactyl. This DNA-based tree is compatible to published trees derived from a number of other genes. The differences to those trees obtained with ribonuclease protein sequences can be explained by the influence of convergence of pancreatic RNases from hippopotamus, camel, and ruminants and by taking into account the information from third codon positions in the DNA-based analyses. The evolution of sequence features of ribonucleases such as the distribution of positively charged amino acids and of potential glycosylation sites is described with regard to increased double-stranded RNA cleavage that is observed in several cetacean and artiodactyl RNases which may have no role in ruminant or ruminant-like digestion. |
| Databáze: | OpenAIRE |
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