Isolation and spectral characterization of cadmium binding metallothionein
Abstract A cadmium (Cd)-binding protein was isolated and characterized from the Antarctic clam Laternula elliptica after experimental exposure to a high concentration of Cd. Cd-binding metallothioneins (MTs) in the cytosol were purified using a procedure based on gel permeation and ion-exchange chro...
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crcambridgeupr:10.1017/s0954102007000806 2024-03-03T08:38:32+00:00 Isolation and spectral characterization of cadmium binding metallothionein Park, Hyun Ahn, In-Young Choi, Heeseon J. Ji, Jung Youn 2007 http://dx.doi.org/10.1017/s0954102007000806 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102007000806 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 20, issue 1, page 33-37 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2007 crcambridgeupr https://doi.org/10.1017/s0954102007000806 2024-02-08T08:41:02Z Abstract A cadmium (Cd)-binding protein was isolated and characterized from the Antarctic clam Laternula elliptica after experimental exposure to a high concentration of Cd. Cd-binding metallothioneins (MTs) in the cytosol were purified using a procedure based on gel permeation and ion-exchange chromatography. The purified MTs were recognized by MT antibodies in a Western blotting assay. MALDI-TOF MS analyses showed that the molecular mass of the purified MTs was 7.27 kDa, which is typical of MTs found in marine invertebrates. The Cd binding to MT, reflected by the redistribution of Cd ions, was monitored by spectrophotometry. The absorption spectra profiles indicated the presence of Cd-MT complexes, and a 4 nm red shift of the unresolved lowest energy-absorption band occurred when five equivalents of Cd (II) were incorporated. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Cambridge University Press Antarctic The Antarctic Antarctic Science 20 1 33 37 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Park, Hyun Ahn, In-Young Choi, Heeseon J. Ji, Jung Youn Isolation and spectral characterization of cadmium binding metallothionein |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract A cadmium (Cd)-binding protein was isolated and characterized from the Antarctic clam Laternula elliptica after experimental exposure to a high concentration of Cd. Cd-binding metallothioneins (MTs) in the cytosol were purified using a procedure based on gel permeation and ion-exchange chromatography. The purified MTs were recognized by MT antibodies in a Western blotting assay. MALDI-TOF MS analyses showed that the molecular mass of the purified MTs was 7.27 kDa, which is typical of MTs found in marine invertebrates. The Cd binding to MT, reflected by the redistribution of Cd ions, was monitored by spectrophotometry. The absorption spectra profiles indicated the presence of Cd-MT complexes, and a 4 nm red shift of the unresolved lowest energy-absorption band occurred when five equivalents of Cd (II) were incorporated. |
format |
Article in Journal/Newspaper |
author |
Park, Hyun Ahn, In-Young Choi, Heeseon J. Ji, Jung Youn |
author_facet |
Park, Hyun Ahn, In-Young Choi, Heeseon J. Ji, Jung Youn |
author_sort |
Park, Hyun |
title |
Isolation and spectral characterization of cadmium binding metallothionein |
title_short |
Isolation and spectral characterization of cadmium binding metallothionein |
title_full |
Isolation and spectral characterization of cadmium binding metallothionein |
title_fullStr |
Isolation and spectral characterization of cadmium binding metallothionein |
title_full_unstemmed |
Isolation and spectral characterization of cadmium binding metallothionein |
title_sort |
isolation and spectral characterization of cadmium binding metallothionein |
publisher |
Cambridge University Press (CUP) |
publishDate |
2007 |
url |
http://dx.doi.org/10.1017/s0954102007000806 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102007000806 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctic Science |
genre_facet |
Antarc* Antarctic Antarctic Science |
op_source |
Antarctic Science volume 20, issue 1, page 33-37 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102007000806 |
container_title |
Antarctic Science |
container_volume |
20 |
container_issue |
1 |
container_start_page |
33 |
op_container_end_page |
37 |
_version_ |
1792506941273014272 |