Kukovetz, Kerri ; Hertel, Brigitte ; Schvarcz, Christopher R. ; Saponaro, Andrea ; Manthey, Mirja ; Burk, Ulrike ; Greiner, Timo ; Steward, Grieg F. ; Etten, James L. van ; Moroni, Anna ; Thiel, Gerhard ; Rauh, Oliver (2021)
A Functional K+ Channel from Tetraselmis Virus 1, a Member of the Mimiviridae.
In: Viruses, 2020, 12 (10)
doi: 10.26083/tuprints-00019251
Artikel, Zweitveröffentlichung, Verlagsversion
 | Es ist eine neuere Version dieses Eintrags verfügbar. |
Kurzbeschreibung (Abstract)
Potassium ion (K+) channels have been observed in diverse viruses that infect eukaryotic marine and freshwater algae. However, experimental evidence for functional K+ channels among these alga-infecting viruses has thus far been restricted to members of the family Phycodnaviridae, which are large, double-stranded DNA viruses within the phylum Nucleocytoviricota. Recent sequencing projects revealed that alga-infecting members of Mimiviridae, another family within this phylum, may also contain genes encoding K+ channels. Here we examine the structural features and the functional properties of putative K+ channels from four cultivated members of Mimiviridae. While all four proteins contain variations of the conserved selectivity filter sequence of K+ channels, structural prediction algorithms suggest that only two of them have the required number and position of two transmembrane domains that are present in all K+ channels. After in vitro translation and reconstitution of the four proteins in planar lipid bilayers, we confirmed that one of them, a 79 amino acid protein from the virus Tetraselmis virus 1 (TetV-1), forms a functional ion channel with a distinct selectivity for K+ over Na+ and a sensitivity to Ba2+. Thus, virus-encoded K+ channels are not limited to Phycodnaviridae but also occur in the members of Mimiviridae. The large sequence diversity among the viral K+ channels implies multiple events of lateral gene transfer.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Kukovetz, Kerri ; Hertel, Brigitte ; Schvarcz, Christopher R. ; Saponaro, Andrea ; Manthey, Mirja ; Burk, Ulrike ; Greiner, Timo ; Steward, Grieg F. ; Etten, James L. van ; Moroni, Anna ; Thiel, Gerhard ; Rauh, Oliver |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | A Functional K+ Channel from Tetraselmis Virus 1, a Member of the Mimiviridae |
| Sprache: | Englisch |
| Publikationsjahr: | 2021 |
| Publikationsdatum der Erstveröffentlichung: | 2020 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Viruses |
| Jahrgang/Volume einer Zeitschrift: | 12 |
| (Heft-)Nummer: | 10 |
| Kollation: | 14 Seiten |
| DOI: | 10.26083/tuprints-00019251 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/19251 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung aus gefördertem Golden Open Access |
| Kurzbeschreibung (Abstract): | Potassium ion (K+) channels have been observed in diverse viruses that infect eukaryotic marine and freshwater algae. However, experimental evidence for functional K+ channels among these alga-infecting viruses has thus far been restricted to members of the family Phycodnaviridae, which are large, double-stranded DNA viruses within the phylum Nucleocytoviricota. Recent sequencing projects revealed that alga-infecting members of Mimiviridae, another family within this phylum, may also contain genes encoding K+ channels. Here we examine the structural features and the functional properties of putative K+ channels from four cultivated members of Mimiviridae. While all four proteins contain variations of the conserved selectivity filter sequence of K+ channels, structural prediction algorithms suggest that only two of them have the required number and position of two transmembrane domains that are present in all K+ channels. After in vitro translation and reconstitution of the four proteins in planar lipid bilayers, we confirmed that one of them, a 79 amino acid protein from the virus Tetraselmis virus 1 (TetV-1), forms a functional ion channel with a distinct selectivity for K+ over Na+ and a sensitivity to Ba2+. Thus, virus-encoded K+ channels are not limited to Phycodnaviridae but also occur in the members of Mimiviridae. The large sequence diversity among the viral K+ channels implies multiple events of lateral gene transfer. |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-192518 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 570 Biowissenschaften, Biologie |
| Fachbereich(e)/-gebiet(e): | 10 Fachbereich Biologie 10 Fachbereich Biologie > Plant Membrane Biophyscis (am 20.12.23 umbenannt in Biologie der Algen und Protozoen) |
| Hinterlegungsdatum: | 03 Aug 2021 07:28 |
| Letzte Änderung: | 22 Nov 2021 10:16 |
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| Suche nach Titel in: | TUfind oder in Google |
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- A Functional K+ Channel from Tetraselmis Virus 1, a Member of the Mimiviridae. (deposited 03 Aug 2021 07:28) [Gegenwärtig angezeigt]
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