Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea
Cartilaginous fish are very ancient organisms. In the Antarctic sea, the modern chondrichthyan genera are poorly represented, with only three species of sharks and eight species of skates; the paucity of chondrichthyans is probably an ecological consequence of unusual trophic or habitat conditions i...
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crportlandpress:10.1042/bj20050305 2024-06-09T07:40:34+00:00 Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea Verde, Cinzia De Rosa, M. Cristina Giordano, Daniela Mosca, Donato De Pascale, Donatella Raiola, Luca Cocca, Ennio Carratore, Vitale Giardina, Bruno Di Prisco, Guido 2005 http://dx.doi.org/10.1042/bj20050305 https://portlandpress.com/biochemj/article-pdf/389/2/297/721232/bj3890297.pdf en eng Portland Press Ltd. Biochemical Journal volume 389, issue 2, page 297-306 ISSN 0264-6021 1470-8728 journal-article 2005 crportlandpress https://doi.org/10.1042/bj20050305 2024-05-16T14:10:04Z Cartilaginous fish are very ancient organisms. In the Antarctic sea, the modern chondrichthyan genera are poorly represented, with only three species of sharks and eight species of skates; the paucity of chondrichthyans is probably an ecological consequence of unusual trophic or habitat conditions in the Southern Ocean. In the Arctic, there are 26 species belonging to the class Chondrichthyes. Fish in the two polar regions have been subjected to different regional histories that have influenced the development of diversity: Antarctic marine organisms are highly stenothermal, in response to stable water temperatures, whereas the Arctic communities are exposed to seasonal temperature variations. The structure and function of the oxygen-transport haem protein from the Antarctic skate Bathyraja eatonii and from the Arctic skate Raja hyperborea (both of the subclass Elasmobranchii, order Rajiformes, family Rajidae) is reported in the present paper. These species have a single major haemoglobin (Hb 1; over 80% of the total). The Bohr-proton and the organophosphate-binding sites are absent. Thus the haemoglobins of northern and southern polar skates appear functionally similar, whereas differences were observed with several temperate elasmobranchs. Such evidence suggests that, in temperate and polar habitats, physiological adaptations have evolved along distinct pathways, whereas, in this case, the effect of the differences characterizing the two polar environments is negligible. Article in Journal/Newspaper Antarc* Antarctic Arctic Southern Ocean Portland Press Antarctic Arctic Southern Ocean The Antarctic Biochemical Journal 389 2 297 306 |
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Open Polar |
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Portland Press |
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English |
description |
Cartilaginous fish are very ancient organisms. In the Antarctic sea, the modern chondrichthyan genera are poorly represented, with only three species of sharks and eight species of skates; the paucity of chondrichthyans is probably an ecological consequence of unusual trophic or habitat conditions in the Southern Ocean. In the Arctic, there are 26 species belonging to the class Chondrichthyes. Fish in the two polar regions have been subjected to different regional histories that have influenced the development of diversity: Antarctic marine organisms are highly stenothermal, in response to stable water temperatures, whereas the Arctic communities are exposed to seasonal temperature variations. The structure and function of the oxygen-transport haem protein from the Antarctic skate Bathyraja eatonii and from the Arctic skate Raja hyperborea (both of the subclass Elasmobranchii, order Rajiformes, family Rajidae) is reported in the present paper. These species have a single major haemoglobin (Hb 1; over 80% of the total). The Bohr-proton and the organophosphate-binding sites are absent. Thus the haemoglobins of northern and southern polar skates appear functionally similar, whereas differences were observed with several temperate elasmobranchs. Such evidence suggests that, in temperate and polar habitats, physiological adaptations have evolved along distinct pathways, whereas, in this case, the effect of the differences characterizing the two polar environments is negligible. |
format |
Article in Journal/Newspaper |
author |
Verde, Cinzia De Rosa, M. Cristina Giordano, Daniela Mosca, Donato De Pascale, Donatella Raiola, Luca Cocca, Ennio Carratore, Vitale Giardina, Bruno Di Prisco, Guido |
spellingShingle |
Verde, Cinzia De Rosa, M. Cristina Giordano, Daniela Mosca, Donato De Pascale, Donatella Raiola, Luca Cocca, Ennio Carratore, Vitale Giardina, Bruno Di Prisco, Guido Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea |
author_facet |
Verde, Cinzia De Rosa, M. Cristina Giordano, Daniela Mosca, Donato De Pascale, Donatella Raiola, Luca Cocca, Ennio Carratore, Vitale Giardina, Bruno Di Prisco, Guido |
author_sort |
Verde, Cinzia |
title |
Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea |
title_short |
Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea |
title_full |
Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea |
title_fullStr |
Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea |
title_full_unstemmed |
Structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish Bathyraja eatonii and Raja hyperborea |
title_sort |
structure, function and molecular adaptations of haemoglobins of the polar cartilaginous fish bathyraja eatonii and raja hyperborea |
publisher |
Portland Press Ltd. |
publishDate |
2005 |
url |
http://dx.doi.org/10.1042/bj20050305 https://portlandpress.com/biochemj/article-pdf/389/2/297/721232/bj3890297.pdf |
geographic |
Antarctic Arctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Arctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Arctic Southern Ocean |
genre_facet |
Antarc* Antarctic Arctic Southern Ocean |
op_source |
Biochemical Journal volume 389, issue 2, page 297-306 ISSN 0264-6021 1470-8728 |
op_doi |
https://doi.org/10.1042/bj20050305 |
container_title |
Biochemical Journal |
container_volume |
389 |
container_issue |
2 |
container_start_page |
297 |
op_container_end_page |
306 |
_version_ |
1801383951667822592 |