The evolution of extracellular hemoglobins of annelids, vestimentiferans, and pogonophorans
| Autor: | Sylvia Dewilde, Enrico Negrisolo, Gerolamo Lanfranchi, Alberto Pallavicini, Luc Moens, Roberto Barbato, Anna Ghiretti-Magaldi |
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| Přispěvatelé: | Negrisolo, E., Pallavicini, Alberto, Barbato, R., Dewilde, S., Ghirettimagaldi, A., Moens, L., Lanfranchi, G. |
| Jazyk: | angličtina |
| Rok vydání: | 2001 |
| Předmět: |
Sequence analysis
Annelida Molecular Sequence Data invertebrate Sequence alignment haemoglobin cDNA protein structure globin evolution Biology Biochemistry Evolution Molecular Hemoglobins Protein structure Phylogenetics Molecular evolution Animals Amino Acid Sequence Globin Molecular Biology Peptide sequence Phylogeny Genetics Phylogenetic tree Polychaeta Cell Biology Evolutionary biology Sequence Alignment Sequence Analysis |
| Zdroj: | Journal of biological chemistry |
| ISSN: | 0021-9258 |
| Popis: | The evolution of extracellular hemoglobins of annelids, vestimentiferans, and pogonophorans was investigated by applying cladistic and distance-based approaches to reconstruct the phylogenetic relationships of this group of respiratory pigments. We performed this study using the aligned sequences of globin and linker chains that are the constituents of these complex molecules. Three novel globin and two novel linker chains of Sabella spallanzanii described in an accompanying paper (Pallavicini, A., Negrisolo, E., Barbato, R., Dewilde, S., Ghiretti-Magaldi, A., Moens, L., and Lanfranchi, G. (2001) J. Biol. Chem. 276, 26384--26390) were also included. Our results allowed us to test previous hypotheses on the evolutionary pathways of these proteins and to formulate a new most parsimonious model of molecular evolution. According to this novel model, the genes coding for the polypeptides forming these composite molecules were already present in the common ancestor of annelids, vestimentiferans, and pogonophorans. |
| Databáze: | OpenAIRE |
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