Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata
Abstract Background Reef-building corals regularly experience changes in intra- and extracellular H+ concentrations ([H+]) due to physiological and environmental processes. Stringent control of [H+] is required to maintain the homeostatic acid-base balance in coral cells and is achieved through the...
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ftdoajarticles:oai:doaj.org/article:2c2c4091b12f4e56a365710a9a0b7636 2023-05-15T17:52:02+02:00 Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata Laura Capasso Philippe Ganot Víctor Planas-Bielsa Sylvie Tambutté Didier Zoccola 2021-03-01T00:00:00Z https://doi.org/10.1186/s12860-021-00353-x https://doaj.org/article/2c2c4091b12f4e56a365710a9a0b7636 EN eng BMC https://doi.org/10.1186/s12860-021-00353-x https://doaj.org/toc/2661-8850 doi:10.1186/s12860-021-00353-x 2661-8850 https://doaj.org/article/2c2c4091b12f4e56a365710a9a0b7636 BMC Molecular and Cell Biology, Vol 22, Iss 1, Pp 1-19 (2021) H+ transport Reef-building corals pH regulation Gene expression Ocean acidification Cytology QH573-671 article 2021 ftdoajarticles https://doi.org/10.1186/s12860-021-00353-x 2022-12-31T13:44:39Z Abstract Background Reef-building corals regularly experience changes in intra- and extracellular H+ concentrations ([H+]) due to physiological and environmental processes. Stringent control of [H+] is required to maintain the homeostatic acid-base balance in coral cells and is achieved through the regulation of intracellular pH (pHi). This task is especially challenging for reef-building corals that share an endosymbiotic relationship with photosynthetic dinoflagellates (family Symbiodinaceae), which significantly affect the pHi of coral cells. Despite their importance, the pH regulatory proteins involved in the homeostatic acid-base balance have been scarcely investigated in corals. Here, we report in the coral Stylophora pistillata a full characterization of the genomic structure, domain topology and phylogeny of three major H+ transporter families that are known to play a role in the intracellular pH regulation of animal cells; we investigated their tissue-specific expression patterns and assessed the effect of seawater acidification on their expression levels. Results We identified members of the Na+/H+ exchanger (SLC9), vacuolar-type electrogenic H+-ATP hydrolase (V-ATPase) and voltage-gated proton channel (HvCN) families in the genome and transcriptome of S. pistillata. In addition, we identified a novel member of the HvCN gene family in the cnidarian subclass Hexacorallia that has not been previously described in any species. We also identified key residues that contribute to H+ transporter substrate specificity, protein function and regulation. Last, we demonstrated that some of these proteins have different tissue expression patterns, and most are unaffected by exposure to seawater acidification. Conclusions In this study, we provide the first characterization of H+ transporters that might contribute to the homeostatic acid-base balance in coral cells. This work will enrich the knowledge of the basic aspects of coral biology and has important implications for our understanding of how corals regulate ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles BMC Molecular and Cell Biology 22 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
H+ transport Reef-building corals pH regulation Gene expression Ocean acidification Cytology QH573-671 |
spellingShingle |
H+ transport Reef-building corals pH regulation Gene expression Ocean acidification Cytology QH573-671 Laura Capasso Philippe Ganot Víctor Planas-Bielsa Sylvie Tambutté Didier Zoccola Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata |
topic_facet |
H+ transport Reef-building corals pH regulation Gene expression Ocean acidification Cytology QH573-671 |
description |
Abstract Background Reef-building corals regularly experience changes in intra- and extracellular H+ concentrations ([H+]) due to physiological and environmental processes. Stringent control of [H+] is required to maintain the homeostatic acid-base balance in coral cells and is achieved through the regulation of intracellular pH (pHi). This task is especially challenging for reef-building corals that share an endosymbiotic relationship with photosynthetic dinoflagellates (family Symbiodinaceae), which significantly affect the pHi of coral cells. Despite their importance, the pH regulatory proteins involved in the homeostatic acid-base balance have been scarcely investigated in corals. Here, we report in the coral Stylophora pistillata a full characterization of the genomic structure, domain topology and phylogeny of three major H+ transporter families that are known to play a role in the intracellular pH regulation of animal cells; we investigated their tissue-specific expression patterns and assessed the effect of seawater acidification on their expression levels. Results We identified members of the Na+/H+ exchanger (SLC9), vacuolar-type electrogenic H+-ATP hydrolase (V-ATPase) and voltage-gated proton channel (HvCN) families in the genome and transcriptome of S. pistillata. In addition, we identified a novel member of the HvCN gene family in the cnidarian subclass Hexacorallia that has not been previously described in any species. We also identified key residues that contribute to H+ transporter substrate specificity, protein function and regulation. Last, we demonstrated that some of these proteins have different tissue expression patterns, and most are unaffected by exposure to seawater acidification. Conclusions In this study, we provide the first characterization of H+ transporters that might contribute to the homeostatic acid-base balance in coral cells. This work will enrich the knowledge of the basic aspects of coral biology and has important implications for our understanding of how corals regulate ... |
format |
Article in Journal/Newspaper |
author |
Laura Capasso Philippe Ganot Víctor Planas-Bielsa Sylvie Tambutté Didier Zoccola |
author_facet |
Laura Capasso Philippe Ganot Víctor Planas-Bielsa Sylvie Tambutté Didier Zoccola |
author_sort |
Laura Capasso |
title |
Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata |
title_short |
Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata |
title_full |
Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata |
title_fullStr |
Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata |
title_full_unstemmed |
Intracellular pH regulation: characterization and functional investigation of H+ transporters in Stylophora pistillata |
title_sort |
intracellular ph regulation: characterization and functional investigation of h+ transporters in stylophora pistillata |
publisher |
BMC |
publishDate |
2021 |
url |
https://doi.org/10.1186/s12860-021-00353-x https://doaj.org/article/2c2c4091b12f4e56a365710a9a0b7636 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
BMC Molecular and Cell Biology, Vol 22, Iss 1, Pp 1-19 (2021) |
op_relation |
https://doi.org/10.1186/s12860-021-00353-x https://doaj.org/toc/2661-8850 doi:10.1186/s12860-021-00353-x 2661-8850 https://doaj.org/article/2c2c4091b12f4e56a365710a9a0b7636 |
op_doi |
https://doi.org/10.1186/s12860-021-00353-x |
container_title |
BMC Molecular and Cell Biology |
container_volume |
22 |
container_issue |
1 |
_version_ |
1766159350083092480 |