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Analysis of aquapor...
Analysis of aquaporins from the euryhaline barnacle Balanus improvisus reveals differential expression in response to changes in salinity
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- Lind, Ulrika (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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- Järvå, Michael (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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- Alm Rosenblad, Magnus, 1957 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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- Pingitore, Piero, 1986 (author)
- Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Wallenberg Laboratory,Institute of Medicine, Department of Molecular and Clinical Medicine
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- Karlsson, Emil (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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- Wrange, Anna-Lisa (author)
- RISE,Kemi och material
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- Kamdal, Emelie (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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- Sundell, Kristina, 1959 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
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- André, Carl, 1958 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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- Jonsson, Per R., 1957 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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Havenhand, Jon (author)
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- Eriksson, Leif A, 1964 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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- Hedfalk, Kristina, 1969 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology
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- Blomberg, Anders, 1956 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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- Havenhand, Jonathan N., 1959 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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(creator_code:org_t)
- 2017-07-17
- 2017
- English.
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In: PLOS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 12:7
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Abstract
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- Barnacles are sessile macro-invertebrates, found along rocky shores in coastal areas worldwide. The euryhaline bay barnacle Balanus improvisus (Darwin, 1854) (= Amphibalanus improvisus) can tolerate a wide range of salinities, but the molecular mechanisms underlying the osmoregulatory capacity of this truly brackish species are not well understood. Aquaporins are pore-forming integral membrane proteins that facilitate transport of water, small solutes and ions through cellular membranes, and that have been shown to be important for osmoregulation in many organisms. The knowledge of the function of aquaporins in crustaceans is, however, limited and nothing is known about them in barnacles. We here present the repertoire of aquaporins from a thecostracan crustacean, the barnacle B. improvisus, based on genome and transcriptome sequencing. Our analyses reveal that B. improvisus contains eight genes for aquaporins. Phylogenetic analysis showed that they represented members of the classical water aquaporins (Aqp1, Aqp2), the aquaglyceroporins (Glp1, Glp2), the unorthodox aquaporin (Aqp12) and the arthropod-specific big brain aquaporin (Bib). Interestingly, we also found two big brain-like proteins (BibL1 and BibL2) constituting a new group of aquaporins not yet described in arthropods. In addition, we found that the two water-specific aquaporins were expressed as C-terminal splice variants. Heterologous expression of some of the aquaporins followed by functional characterization showed that Aqp1 transported water and Glp2 water and glycerol, agreeing with the predictions of substrate specificity based on 3D modeling and phylogeny. To investigate a possible role for the B. improvisus aquaporins in osmoregulation, mRNA expression changes in adult barnacles were analysed after long-term acclimation to different salinities. The most pronounced expression difference was seen for AQP1 with a substantial (>100-fold) decrease in the mantle tissue in low salinity (3 PSU) compared to high salinity (33 PSU). Our study provides a base for future mechanistic studies on the role of aquaporins in osmoregulation. © 2017 Lind et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Subject headings
- NATURVETENSKAP -- Biologi -- Bioinformatik och systembiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Bioinformatics and Systems Biology (hsv//eng)
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- ref (subject category)
- art (subject category)
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- By the author/editor
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Lind, Ulrika
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Järvå, Michael
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Alm Rosenblad, M ...
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Pingitore, Piero ...
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Karlsson, Emil
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Wrange, Anna-Lis ...
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Kamdal, Emelie
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Sundell, Kristin ...
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André, Carl, 195 ...
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Jonsson, Per R., ...
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Havenhand, Jon
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Eriksson, Leif A ...
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Hedfalk, Kristin ...
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Blomberg, Anders ...
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Havenhand, Jonat ...
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University of Gothenburg