Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments
Proteins are the largest defined molecular component of marine organic nitrogen, and hydrolysable amino acids, the building blocks of proteins, are important components of particulate nitrogen in marine sediments. In oceanic systems, the largest contributors are phytoplankton proteins, which have be...
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ftdoajarticles:oai:doaj.org/article:4a8ee43aa91e41549b5d97ce1429a418 2023-05-15T15:43:37+02:00 Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments Eli K. Moore H. Rodger Harvey Jessica F. Faux David R. Goodlett Brook L. Nunn 2014-10-01T00:00:00Z https://doi.org/10.3390/chromatography1040176 https://doaj.org/article/4a8ee43aa91e41549b5d97ce1429a418 EN eng MDPI AG http://www.mdpi.com/2227-9075/1/4/176 https://doaj.org/toc/2227-9075 2227-9075 doi:10.3390/chromatography1040176 https://doaj.org/article/4a8ee43aa91e41549b5d97ce1429a418 Chromatography, Vol 1, Iss 4, Pp 176-193 (2014) proteomics extraction marine sediments protein bioinformatics Chemistry QD1-999 article 2014 ftdoajarticles https://doi.org/10.3390/chromatography1040176 2023-01-08T01:39:08Z Proteins are the largest defined molecular component of marine organic nitrogen, and hydrolysable amino acids, the building blocks of proteins, are important components of particulate nitrogen in marine sediments. In oceanic systems, the largest contributors are phytoplankton proteins, which have been tracked from newly produced bloom material through the water column to surface sediments in the Bering Sea, but it is not known if proteins buried deeper in sediment systems can be identified with confidence. Electrophoretic gel protein extraction methods followed by proteomic mass spectrometry and database searching were used as the methodology to identify buried phytoplankton proteins in sediments from the 8–10 cm section of a Bering Sea sediment core. More peptides and proteins were identified using an SDS-PAGE tube gel than a standard 1D flat gel or digesting the sediment directly with trypsin. The majority of proteins identified correlated to the marine diatom, Thalassiosira pseudonana, rather than bacterial protein sequences, indicating an algal source not only dominates the input, but also the preserved protein fraction. Abundant RuBisCO and fucoxanthin chlorophyll a/c binding proteins were identified, supporting algal sources of these proteins and reinforcing the proposed mechanisms that might protect proteins for long time periods. Some preserved peptides were identified in unexpected gel molecular weight ranges, indicating that some structural changes or charge alteration influenced the mobility of these products during electrophoresis isolation. Identifying buried photosystem proteins suggests that algal particulate matter is a significant fraction of the preserved organic carbon and nitrogen pools in marine sediments. Article in Journal/Newspaper Bering Sea Directory of Open Access Journals: DOAJ Articles Bering Sea Chromatography 1 4 176 193 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
proteomics extraction marine sediments protein bioinformatics Chemistry QD1-999 |
spellingShingle |
proteomics extraction marine sediments protein bioinformatics Chemistry QD1-999 Eli K. Moore H. Rodger Harvey Jessica F. Faux David R. Goodlett Brook L. Nunn Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments |
topic_facet |
proteomics extraction marine sediments protein bioinformatics Chemistry QD1-999 |
description |
Proteins are the largest defined molecular component of marine organic nitrogen, and hydrolysable amino acids, the building blocks of proteins, are important components of particulate nitrogen in marine sediments. In oceanic systems, the largest contributors are phytoplankton proteins, which have been tracked from newly produced bloom material through the water column to surface sediments in the Bering Sea, but it is not known if proteins buried deeper in sediment systems can be identified with confidence. Electrophoretic gel protein extraction methods followed by proteomic mass spectrometry and database searching were used as the methodology to identify buried phytoplankton proteins in sediments from the 8–10 cm section of a Bering Sea sediment core. More peptides and proteins were identified using an SDS-PAGE tube gel than a standard 1D flat gel or digesting the sediment directly with trypsin. The majority of proteins identified correlated to the marine diatom, Thalassiosira pseudonana, rather than bacterial protein sequences, indicating an algal source not only dominates the input, but also the preserved protein fraction. Abundant RuBisCO and fucoxanthin chlorophyll a/c binding proteins were identified, supporting algal sources of these proteins and reinforcing the proposed mechanisms that might protect proteins for long time periods. Some preserved peptides were identified in unexpected gel molecular weight ranges, indicating that some structural changes or charge alteration influenced the mobility of these products during electrophoresis isolation. Identifying buried photosystem proteins suggests that algal particulate matter is a significant fraction of the preserved organic carbon and nitrogen pools in marine sediments. |
format |
Article in Journal/Newspaper |
author |
Eli K. Moore H. Rodger Harvey Jessica F. Faux David R. Goodlett Brook L. Nunn |
author_facet |
Eli K. Moore H. Rodger Harvey Jessica F. Faux David R. Goodlett Brook L. Nunn |
author_sort |
Eli K. Moore |
title |
Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments |
title_short |
Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments |
title_full |
Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments |
title_fullStr |
Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments |
title_full_unstemmed |
Electrophoretic Extraction and Proteomic Characterization of Proteins Buried in Marine Sediments |
title_sort |
electrophoretic extraction and proteomic characterization of proteins buried in marine sediments |
publisher |
MDPI AG |
publishDate |
2014 |
url |
https://doi.org/10.3390/chromatography1040176 https://doaj.org/article/4a8ee43aa91e41549b5d97ce1429a418 |
geographic |
Bering Sea |
geographic_facet |
Bering Sea |
genre |
Bering Sea |
genre_facet |
Bering Sea |
op_source |
Chromatography, Vol 1, Iss 4, Pp 176-193 (2014) |
op_relation |
http://www.mdpi.com/2227-9075/1/4/176 https://doaj.org/toc/2227-9075 2227-9075 doi:10.3390/chromatography1040176 https://doaj.org/article/4a8ee43aa91e41549b5d97ce1429a418 |
op_doi |
https://doi.org/10.3390/chromatography1040176 |
container_title |
Chromatography |
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1 |
container_issue |
4 |
container_start_page |
176 |
op_container_end_page |
193 |
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1766377806711750656 |