High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos
Assessing the energy costs of development in extreme environments is important for understanding how organisms can exist at the margins of the biosphere. Macromolecular turnover rates of RNA and protein were measured at –1.5°C during early development of an Antarctic sea urchin. Contrary to expectat...
Published in: | Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
American Association for the Advancement of Science (AAAS)
2001
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1126/science.1056341 https://www.science.org/doi/pdf/10.1126/science.1056341 |
id |
craaas:10.1126/science.1056341 |
---|---|
record_format |
openpolar |
spelling |
craaas:10.1126/science.1056341 2024-06-09T07:41:05+00:00 High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos Marsh, Adam G. Maxson, Robert E. Manahan, Donal T. 2001 http://dx.doi.org/10.1126/science.1056341 https://www.science.org/doi/pdf/10.1126/science.1056341 en eng American Association for the Advancement of Science (AAAS) Science volume 291, issue 5510, page 1950-1952 ISSN 0036-8075 1095-9203 journal-article 2001 craaas https://doi.org/10.1126/science.1056341 2024-05-16T12:54:30Z Assessing the energy costs of development in extreme environments is important for understanding how organisms can exist at the margins of the biosphere. Macromolecular turnover rates of RNA and protein were measured at –1.5°C during early development of an Antarctic sea urchin. Contrary to expectations of low synthesis with low metabolism at low temperatures, protein and RNA synthesis rates exhibited temperature compensation and were equivalent to rates in temperate sea urchin embryos. High protein metabolism with a low metabolic rate is energetically possible in this Antarctic sea urchin because the energy cost of protein turnover, 0.45 joules per milligram of protein, is 1/25th the values reported for other animals. Article in Journal/Newspaper Antarc* Antarctic AAAS Resource Center (American Association for the Advancement of Science) Antarctic Science 291 5510 1950 1952 |
institution |
Open Polar |
collection |
AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Assessing the energy costs of development in extreme environments is important for understanding how organisms can exist at the margins of the biosphere. Macromolecular turnover rates of RNA and protein were measured at –1.5°C during early development of an Antarctic sea urchin. Contrary to expectations of low synthesis with low metabolism at low temperatures, protein and RNA synthesis rates exhibited temperature compensation and were equivalent to rates in temperate sea urchin embryos. High protein metabolism with a low metabolic rate is energetically possible in this Antarctic sea urchin because the energy cost of protein turnover, 0.45 joules per milligram of protein, is 1/25th the values reported for other animals. |
format |
Article in Journal/Newspaper |
author |
Marsh, Adam G. Maxson, Robert E. Manahan, Donal T. |
spellingShingle |
Marsh, Adam G. Maxson, Robert E. Manahan, Donal T. High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos |
author_facet |
Marsh, Adam G. Maxson, Robert E. Manahan, Donal T. |
author_sort |
Marsh, Adam G. |
title |
High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos |
title_short |
High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos |
title_full |
High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos |
title_fullStr |
High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos |
title_full_unstemmed |
High Macromolecular Synthesis with Low Metabolic Cost in Antarctic Sea Urchin Embryos |
title_sort |
high macromolecular synthesis with low metabolic cost in antarctic sea urchin embryos |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1126/science.1056341 https://www.science.org/doi/pdf/10.1126/science.1056341 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Science volume 291, issue 5510, page 1950-1952 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1056341 |
container_title |
Science |
container_volume |
291 |
container_issue |
5510 |
container_start_page |
1950 |
op_container_end_page |
1952 |
_version_ |
1801369497078071296 |